What is AWS?
What is Amazon SES?
What is an AWS Region?
How to check Reputation Metrics of your AWS Account?
What is Amazon SNS?
Why do I need Amazon SNS?
Connecting AWS account with MailBluster
Can I use MailBluster without an AWS account?
Do I need to pay Amazon to create AWS Account?
Do I need to have a website for my AWS Account?
Do I need to pay an additional cost to AWS for using Amazon SES?
How to choose AWS Region for MailBluster?
How to move out of Amazon SES Sandbox?
How do I move my AWS Account out of sandbox mode to send emails from MailBluster?
Can I use my MailBluster Account when my AWS Account is in sandbox?
What is Amazon SES Sandbox and why does my account have sandbox access?
What if I don’t get approval from Amazon SES after requesting to move out of the sandbox?
If you are getting this error ‘Unable to connect with Amazon SES using your AWS account’
Why did Amazon SES not send my email, and what caused the recipient’s address to be on the suppression list?
Do I need to create separate IAM users for each brand, or can I use the same AWS account and connect them to the previous brand’s users?
How to verify a domain in Amazon SES?
How to verify an email address in Amazon SES?
How to verify Sender Domain from MailBluster?
How to verify Sender Email Address from MailBluster?
What is a Sender Identity?
What is a Custom Domain?
How to set Custom MAIL FROM Domain in AWS?
Is it necessary to set a Custom MAIL FROM domain for DMARC alignment?
Why set Custom MAIL FROM Domain in Amazon SES?
How to prevent Gmail from showing ‘via amazonses.com’?
Why my AWS Account has been “Paused”?
How to resolve AWS Account “Pause” issue?
Cloudflare configuration is not working with HTTPS?
How can I achieve positive sender reputation if I switch to a new domain?
I am getting this error: Unable to find the permission of ‘AmazonSESFullAccess’.
I am getting this error: Unable to find the permission of ‘AmazonSNSFullAccess’.
What should you do if you get an ‘invalid AWS secret access key’ error message?
Why are you receiving the following error when sending emails: “We couldn’t find required configuration to track your email activities using your AWS credential”?
Why are you experiencing issues with DMARC alignment and SPF when using Amazon SES to send emails, and how can you resolve it by setting up a custom MAIL FROM domain?
Gmail is still not showing the one-click unsubscribe (list-unsubscribe header) in my emails?
Does AWS show complaint rates and bounce rates for AWS accounts?
What is MailBluster? How it works?
What are the features of MailBluster?
What is Email Marketing?
How do I sign up for a MailBluster account?
Features present in the Starter Plan of MailBluster
Features in the Pro Plan of MailBluster
How many emails can be sent per day from MailBluster?
MailBluster is still giving a message to move out of sandbox
Can we send a test mail from MailBluster while my AWS account is in Sandbox mode?
Can we send a Test Mail after exceeding the limit of free emails?
What should I do if I haven’t received the verification email from MailBluster?
Does MailBluster have domain tracking?
Is there a way to track the number of clicks by a specific link in an email campaign?
Does MailBluster provide secured and reputable IP addresses?
Does MailBluster support Custom SMTP?
Can MailBluster be self-hosted?
Does MailBluster have Autoresponder?
Sending Transactional Emails using MailBluster
What is GDPR, and how does MailBluster follow GDPR rules?
How to resend verification OTP from MailBluster?
Why MailBluster if you have AWS Account for sending emails?
On which platform is MailBluster built?
Which character encodings are supported by MailBluster?
Does MailBluster support Email Attachments in email campaigns?
Is it possible to extend the maximum content size allowed per email?
White-Label solution
Sending cold emails using MailBluster
Does MailBluster have a Bug Bounty Program?
MailBluster support channels
What is the official legal address of MailBluster?
We’re importing leads from Mailchimp without first names, which leaves the first_name field empty in MailBluster and affects our open rates. Can you suggest a fallback for users without first names?
What is a Campaign?
How to edit a Campaign?
How to rename a campaign?
How to duplicate a campaign?
How to schedule a campaign in MailBluster?
How to cancel a scheduled campaign?
Changing the width of campaign email
What is the maximum email content size limit?
Using query string in campaign
Removing MailBluster branding
Why is it taking a long time to send the campaigns from MailBluster?
What is double opt-in?
Can I send a quick test email before sending out email campaigns from MailBluster?
How to send Test email using Merge Tags?
How can I set-up Double Opt-In for my campaign?
Difference between Standard Campaigns and Automation Campaigns
Is there a way to sent email in plain text using MailBluster?
How to create and send an email campaign?
How to send Personalized Email from MailBluster?
How to compose email using Drag and Drop Editor?
How can we share the email campaign from MailBluster?
How to set Unsubscribe URL using Drag and Drop editor?
How to set Unsubscribe URL using HTML editor?
How to set Unsubscribe URL using WYSIWYG Editor?
Why my email campaign is showing “outdated”?
Why is my campaign still in the “waiting” status?
How can we send an email blast that limits the sending rate to around 1,000 emails per hour?
Why am I getting this error message, ‘Link/URL used in campaign content must be a maximum of 1000 characters long’?
How do I warm up a new subdomain for emailing an 8-million audience? What should the sending schedule be, and how large should the increments be?
Can I store images in MailBluster?
What is the maximum file size of an image file that can be used in an email campaign?
Can I add strikethrough in the subject line of my email campaign?
If I want to include a motion logo, what would be the process for doing so?
Why does the text look okay in the editor, but in the campaign, it becomes broken?
How to use UTM for tracking in MailBluster using Google Analytics?
If I exceed my sending limit, will my campaign continue tomorrow automatically?
How do you resolve “Content is invalid, merge tag or block tag contains error”?
How to resolve “AWS connection is invalid” under the “Sender email address?”
Is the short preheader text I use in my email campaign getting automatically populated?
I have set up my URL but in the test mail, it is showing 404 error and redirecting it to different URL
How to use default Merge Tag in email campaign if the recipients do not have the data (First Name, Last Name, Full Name, etc)?
How to add first name/last name to leads?
How to update individual Lead information in MailBluster?
How to import leads, subscribers, or email addresses in MailBluster?
How to import leads with Tags?
How to assign Tags to individual lead?
How to manage Tags in bulk in MailBluster?
What is the maximum file size of a CSV file while importing leads?
How many subscribers/contacts can be stored in MailBluster?
How to get a total subscriber count for a Brand in MailBluster?
How to get the unsubscriber count in any brand?
How to Unsubscribe Leads in bulk?
How to export leads?
How to delete Leads from your Brand?
Does MailBluster allow duplicate leads?
Is there a URL address that I can use to update my contacts from Google Sheets?
Does MailBluster allow purchased lists of leads from 3rd parties?
Can I see the number of Subscribers for a time span of more than 24 hours on the Dashboard?
If I choose to import and update leads with a new tag, will it add to or replace the existing tags column value?
How can I see the activity of a lead?
How to import leads to a segment?
What does ‘Override lead’ mean?
What does the ‘deprecated’ text mean?
What is a Field?
How to create a custom field?
What is the maximum character limit of the lead field and custom field?
Is there a way to have personalized merge tags in addition to the ones already present in MailBluster?
What does this mean when a Lead’s Subscription status is ‘Unsubscribed” but the Double Opt-In status is ‘Confirmed’?
Why didn’t I get any single response despite achieving an 80% open rate and a good click ratio during yesterday’s campaign?
Does MailBluster support duplicate email ID or lead?

What is Transient Bounce?

Last update: March 18, 2024

In email marketing, a “transient bounce,” also known as a “soft bounce,” refers to a temporary failure to deliver an email to a recipient. Unlike permanent bounces, transient bounces suggest a temporary issue that may be resolved in the future. Common reasons for transient bounces include:

  1. Mailbox Full: The recipient’s mailbox may be full, preventing it from accepting new emails. Once the recipient frees up space in their mailbox, future emails may be delivered successfully.
  2. Temporary Server Issues: The email server at the recipient’s end might be experiencing temporary problems, such as being temporarily unreachable or undergoing maintenance.
  3. Message Size Exceeded: Some email servers have restrictions on the size of incoming emails. If the email exceeds the maximum allowed size, it may result in a transient bounce.
  4. Greylisting: Some mail servers use greylisting as an anti-spam technique. When an email is initially sent, the recipient’s server may respond with a temporary failure, expecting the sending server to retry after a specific period. Legitimate email servers typically attempt redelivery, while many spam senders do not.
  5. DNS Issues: Transient bounces can occur if there are temporary issues with the Domain Name System (DNS), making it challenging for the sending server to locate the recipient’s mail server.

It’s important for email marketers to distinguish between transient bounces and permanent bounces. While permanent bounces warrant removing the email address from the mailing list, transient bounces may resolve themselves over time.

What is Permanent Bounce?

Last update: March 18, 2024

In email marketing, a “permanent bounce” refers to the situation where an email cannot be delivered to a particular recipient, and the failure is considered permanent. This typically happens when the email address is invalid, no longer exists, or is consistently rejecting the messages. Permanent bounces are also known as “hard bounces.”

There are various reasons why an email might permanently bounce:

  1. Invalid Email Address: The email address provided is not correctly formatted or does not exist.
  2. Domain Does Not Exist: The domain part of the email address (after the “@” symbol) does not correspond to a valid domain on the internet.
  3. Mailbox Does Not Exist: The email server cannot find a mailbox associated with the given email address.
  4. Mailbox Is Full: The recipient’s mailbox has reached its storage limit, and no more emails can be accepted.
  5. Blocked by Server: The email server or spam filter at the recipient’s end has blocked the email.

It’s important for email marketers to regularly clean their email lists by removing addresses that result in permanent bounces. This helps improve email deliverability rates and ensures that future email campaigns reach the intended audience.

Does AWS SES block your SES service when emails are bounced?

Last update: April 28, 2024

Amazon Web Services (AWS), which offers a reliable bulk email service called AWS SES. It had a hard bounce rate of 10%. A hard bounce occurs when an email can’t be delivered for permanent reasons, like if the email address is fake, the domain isn’t valid, or the recipient’s server won’t accept emails. So, if out of 1000 emails sent, 100 were fake or invalid and bounced, AWS SES would block your SES service by temporarily suspending sending privileges.

Here’s how AWS SES works whenever a Email is bounced:

This is how AWS SES works whenever a Email is bounced

How to remove Bounced leads?

Last update: July 28, 2024

If you want to remove all the bounced email addresses from your campaigns, you need to create a Standard Segment using the bounced leads activity condition. When the segment is created, you need to select all the leads of that segment and then delete them.

The following steps will guide you to remove the bounced leads or email addresses from your Brand completely:

1. Go to Brand > Segments then create a Standard Segment name Bounced Leads. Set the bounced leads activity condition as shown below. Select Leads match: “Any“, Campaign activity to “was bounced“, and “any of the selected campaigns“. Then, select those campaigns which whose leads were bounced. Click Create segment

2. A Standard Segment with Bounced Leads will be created as shown below. Then click on the segment named Bounced Leads

3. You will see a list of Bounced Leads (email addresses) which will appear under that segment. Now click on the check box where it has been highlighted by red marker

4. After clicking the highlighted checkbox, all the Bounced Leads will be selected. If you have more than hundred leads then click Select all leads – this will select all the bounced leads under that segment

5. Click on Bulk action and then select Delete leads

6. A confirmation dialogue box will appear. Click Delete. All the bounced leads will now be permanently deleted from the entire segment

7. Now click on the highlighted check box and then Delete segment to remove the segment name Bounced Leads from MailBluster

8. Finally confirm it by clicking Delete to remove the segment from MailBluster

How to remove Complaint leads?

Last update: April 28, 2024

If you want to remove all the complaint mail addresses from your campaigns, you need to create a Standard Segment using the complaint leads activity condition. When the segment is created, you need to select all the leads of that segment and then delete them.

The following steps will guide you to remove the complaint leads or email addresses from your Brand completely:

1. Go to Brand > Segments then create a Standard Segment name Complaint LEADS. Set the complaint leads activity condition as shown below. Select Leads match: “Any“, Campaign activity to “complained“, and “any of the selected campaigns“. Then, select those campaigns which whose leads were bounced. Click Create segment.

Click Create segment

2. A Standard Segment with Complaint Leads will be created as shown below. Then click on the segment named Complaint LEADS.

Click on the segment named Complaint LEADS

3. You will see a list of Complaint Leads (email addresses) which will appear under that segment. Now click on the check box where it has been highlighted by red marker.

Click on the check box

4. After clicking the highlighted checkbox, all the Complaint Leads will be selected. If you have more than hundred leads then click Select all leads – this will select all the complained leads under that segment.

Click select all leads

5. Click on Bulk action and then select Delete leads.

Click on Bulk action and then select Delete leads

6. A confirmation dialogue box will appear. Click Delete. All the complained leads will now be permanently deleted from the segment.

Click Delete

7. Now click on the highlighted check box and then Delete segment to remove the segment name Complaint LEADS from MailBluster.

Click Delete segment to remove the segment name Complaint LEADS from MailBluster

8. Finally confirm it by clicking Delete to remove the segment from MailBluster.

Click Delete to remove the segment from MailBluster.

How will you clean your email list?

Last update: July 11, 2024

Cleaning your email list is essential for maintaining high deliverability rates, improving engagement, and reducing bounce rates.

You can use reliable email validating tools to clean up your email/lead lists. Here are some popular choices:

  1. JitBit Free Email List Cleaner
  2. EmailListVerify
  3. MailerCheck
  4. NeverBounce
  5. ZeroBounce
  6. Clearout
  7. Email Verifier
  8. MailFloss
  9. Mailgun

A healthy email list can enhance your email marketing efforts, ensuring that your messages reach interested and engaged recipients.

What is a list-unsubscribe header?

Last update: March 18, 2024

A list-unsubscribe header is a field in the header of an email, which adds an “Unsubscribe” link or button in the email client’s interface. This provides recipients with an easy and straightforward way to opt out of future emails, without needing to search for an unsubscribe option within the email content itself. The following is an example of list-unsubscribe header.

Sample email showing Unsubscribe button for list-unsubscribe header

What is domain reputation and why it is important?

Last update: August 7, 2024

Domain reputation means emails from your sending domain (SPF and DKIM) are less likely to get filtered to a recipient’s SPAM folder or inbox. The definitions of SPAM below includes mail detected as SPAM by Gmail’s Spam filter, and mail reported by users as SPAM.

Domain reputation is particularly important in email marketing for several key reasons:

  1. Deliverability: A good domain reputation ensures that your emails are delivered to recipients’ inboxes rather than being filtered into spam folders. Email service providers (ESPs) like Gmail, Outlook, and Yahoo! use domain reputation as a critical factor in determining whether to deliver your email or mark it as spam.
  2. Open Rates: Emails that land in the inbox are more likely to be opened and read. High open rates are crucial for the success of your email marketing campaigns, as they directly influence engagement and conversion rates.
  3. Engagement Metrics: Positive engagement metrics, such as open rates, click-through rates, and low bounce rates, help maintain and improve your domain reputation. Conversely, negative metrics like high bounce rates and spam complaints can damage your reputation.
  4. Avoiding Blacklists: Sending emails from a domain with a poor reputation can result in your domain being blacklisted by ESPs and anti-spam organizations. Once blacklisted, it becomes extremely challenging to deliver any emails to your audience, significantly hindering your email marketing efforts.
  5. Trust and Credibility: A strong domain reputation indicates to ESPs and recipients that your emails are legitimate and trustworthy. This builds trust and credibility, encouraging recipients to engage with your content and take desired actions, such as making a purchase or subscribing to a service.
  6. Regulatory Compliance: Maintaining a good domain reputation helps ensure compliance with email marketing regulations, such as the CAN-SPAM Act, GDPR, and other anti-spam laws. Non-compliance can lead to legal penalties and further damage your domain’s reputation.
  7. Cost Efficiency: Sending emails that consistently reach the inbox can save costs associated with email marketing. Poor deliverability can lead to wasted resources, as emails that land in spam folders or are blocked outright do not reach the intended audience.
  8. Long-Term Success: Email marketing is often a long-term strategy. Maintaining a good domain reputation ensures that your email marketing campaigns remain effective over time, allowing you to build and nurture relationships with your audience.
  9. User Experience: Recipients who consistently receive your emails in their inbox are more likely to have a positive experience with your brand. This enhances customer satisfaction and loyalty, which are critical for the success of your email marketing strategy.

In summary, domain reputation is crucial in email marketing because it directly impacts deliverability, engagement, trust, compliance, and the overall effectiveness of your campaigns. Without a good domain reputation, your email marketing efforts may fall short, leading to reduced ROI and potential damage to your brand’s reputation.

Why are my emails being automatically opened or clicked?

Last update: September 24, 2024

Many mailboxes now use security protocols to protect recipients from spam and malicious messages. One such practice involves email providers automatically opening and checking emails before delivering them. A bot scans the content and clicks every link to ensure it’s safe. Once the email passes this security check, it is delivered to the recipient’s inbox.

Some subscribers, particularly those with strict security settings such as .edu or .gov domains, may trigger automatic opens or clicks when receiving emails. This is due to their security filters, which scan links and images for safety before delivering the email. This process can generate false opens or clicks, and there’s little senders can do to prevent it.

To identify auto-clicking subscribers, you can include a hidden link in the email. If it’s clicked, you’ll know the subscriber’s system is automatically scanning the content.

To reduce automatic clicks and opens, encourage subscribers with strict domains to use personal email addresses. Additionally, use HTTPS links, avoid overly promotional content, maintain a clean email list, and avoid typing full URLs in the email. Instead, embed links in text, buttons, or images.

How to set up Google Postmaster for your Sender Domain?

Last update: March 18, 2024

To set up Google Postmaster for your Sender Domain, you need to follow these steps.

Sign in to https://postmaster.google.com. Then click on Get Started.

Clicking Get Started

Click Get Started

Clicking Get Started in Postmaster Tools

Enter your domain URL and then click Next

Entering Domain URL and then clicking Next

Copy TXT record from Google Postmaster and paste it in your DNS Management

Copying TXT record from Google Postmaster and pasting it in your DNS Management

In your DNS Management, click Add

Clicking Add button

Select Type TXT, Name – yourdomain.com and Value – TXT Record from Google Postmaster. Then click Add record

Selecting TXT and setting Domain Name and Value

Once the domain record is added, go to Google Postmaster Tools and click Verify

Clicking Verify button

You will see the status as Verified in the Postmaster Tool

Domain is Verified successfully

Now that the Google Postmaster Tools is configured, use it to measure your spam rate and overall health of your sender domain.

What are the new set of requirements for Senders by Google and Yahoo?

Last update: March 18, 2024

Gmail and Yahoo Mail have introduced a new set of requirements for senders regarding the protection of user inboxes, which has taken effect from February 2024.

The first one is that you must adequately configure DKIM, SPF, and DMARC records for your sender domain instead of verifying the sender’s email address for better email deliverability. For this, you can follow this guide.

The second one is the introduction of easy one-click unsubscribe button on the email header. MailBluster has also implemented an easy one-click unsubscribe header automatically to all outgoing emails to make it easier for recipients to unsubscribe, reducing the spam complaints, as shown below :

One-click easy unsubscribe button in email campaign

The third one is Mailbox providers will require that all senders keep spam complaint rates below 0.3% to avoid having their email treated as spam by the mailbox provider. It is recommended to enroll with Google Postmaster Tools to monitor their spam complaint rates for Gmail recipients.

Kindly be informed that disregarding these requirements could result in Gmail and Yahoo rejecting the delivery of emails to their intended recipients.

Why do I receive messages from [email protected]?

Last update: March 18, 2024

When a recipient of your email campaign clicks the spam button (or its equivalent, such as “junk” button) in their email application, their email service provider (such as Gmail, Yahoo, etc) typically sends a message back to Amazon Simple Email Services (Amazon SES).  This is done to let Amazon and you know that this recipient has marked your email as spam.

To notify you of this action, Amazon SES will send an email to the “from” address used in your email from their [email protected] address, providing you any of the technical information that came along with the spam complaint from the recipient’s email service provider.

When you receive such an email, you should verify that the complaining recipient is not included in your future email sends.  This will ensure that you have happy email recipients and fall under the good graces of Amazon SES.

Here is an example of complaint message:

Complaint email from Amazon SES

How to check your Email Sending Reputation using mail-tester?

Last update: March 18, 2024

You need to check whether your DNS records (DKIM, SPF, DMARC etc) are configured correctly or not. Sometimes ISPs (Internet Service Providers) and ESPs (Email Service Providers) takes the decision to reject the incoming emails. So emails from MailBluster ends up in Spam, Promotions or get bounced.

To check your email sending reputation, follow this process:

First go to https://www.mail-tester.com/

Copy the email address link provided by https://www.mail-tester.com/ . Do not close the tab of the browser. Leave it open.

Copying the email address link from mail-tester.com

Then go to another tab and sign in to MailBluster. Go to Brand > Campaign and click on your desired campaign. Scroll down and click on Send test email.

Clicking Send test email

And paste the email link of mail-tester in the Recipients email address field of the Test email pop up box. Then click Send test email.

Pasting the email link in Recipients email address field and clicking Send test email

Now Click on Then check your score and you will be forwarded to a page with detailed results similar to this:

Clicking Then check your score in mail-tester.com
Mail-tester.com is showing score of the email

You can copy the shared link (highlighted) below to share the score with anyone, example tech team or support team

Copying the shared link with anyone

You will get detailed information whether your DNS MX records configured correctly or not by clicking each of the section:

Detailed information about DNS MX records

Why are my emails/newsletters landing in Spam?

Last update: July 15, 2024

First, please ensure the DKIM, SPF, and DMARC records of your sender domain are set up and working properly. You can refer to this video tutorial for configuring DKIM, SPF, and DMARC records within MailBluster.

Verifying domain ownership helps to increase email deliverability, but there are other steps you need to consider as well.

The second most important step is to use an Action URL. You can set it from Settings > Custom URL tab. Custom URLs can be used to rename the links that MailBluster uses, such as the web version URL and unsubscribe URL. By default, MailBluster uses a shared URL, which may lack a good reputation. Setting up an Action URL will help resolve this issue.

Here is a tutorial for setting up an Action URL: How to set Action URL for your brand in MailBluster.

After configuring all the mentioned settings, send a test email to mail-tester.com and check your sending score.

Please note that your emails might still land in the spam folder, but there are opportunities to improve your deliverability. This blog might help you: The Ultimate Guide on How to Prevent Your Email Newsletters from Going to Spam.

Why are the emails landing in the Promotions tab?

Last update: March 18, 2024

Whether your emails are delivered to your customers’ Promotions tab or their Inbox is typically determined by mail services such as Gmail. Given that you’re sending promotional emails, it’s only natural that they’ll be classified as Promotions by the Gmail algorithm.

Email landing in promotions tab

Gmail has implemented a categorization based on the following criteria:

  1. Email Content (whether the content you send appears to be marketing/promotional in nature rather than personal)
  2. Personalization (the level of personalization your email offers to each of the customers)
  3. User interaction (whether your customer personally marked your email to be categorized into the promotions tab)

If you create personalized content for each subscriber in your email campaign, it’s more likely your email will land in their primary inbox tab.

Why do I get this error ‘suspicious link’?

Last update: March 18, 2024

Using HTTPS links in your email campaign should resolve the “suspicious link” issue.

If the issue still persists, then you need to check for the following:

  1. Using the HTTP link instead of HTTPS
  2. No DKIM configured
  3. No SPF configured
  4. No DMARC configured
  5. Verifying your domain (click base URL) at postmaster.google.com
  6. Using public URL shorteners like http://bit.ly
  7. The Amazon SES is using shared IP to send your emails which might have a low reputation

Reporting spam or complaint email to MailBluster

Last update: July 11, 2024

Please contact our Support Center first for reporting any spam, complaint or abusive emails. You need to share the following details with the support team before submitting your spam or complaint email:

1. Sender’s Email Address

2. Recipient’s Email Address

3. Screenshot of the email you received

Our team will assess and investigate the report thoroughly and if we found that the customer is violating MailBluster Terms of use, we will take necessary actions against the sender.

Why is the lead’s double opt-in status is waiting?

Last update: March 10, 2024

Leads who subscribe with double opt-in enabled will be marked with the waiting status. It means that they received an extra confirmation email to verify their email address but they have not confirmed their subscription yet. When they open the email and click on the button there to confirm their email address, they will be automatically moved to the subscribed lead and the lead’s double opt-in status will be confirmed.

What is causing the gradual decrease in the open rate in my campaign?

Last update: April 28, 2024

A gradual decrease in open rates in your campaign can be attributed to several factors. Here are some common reasons:

  1. List fatigue: Over time, subscribers may become disengaged or less interested in your emails, resulting in lower open rates.
  2. Content relevance: If your email content becomes less relevant or engaging to your audience, they may be less inclined to open your emails.
  3. Deliverability issues: Technical issues, spam filtering, or changes in email client algorithms could affect your emails’ deliverability, leading to lower open rates.
  4. List quality: Your email list may naturally decay over time as subscribers change email addresses, unsubscribe, or mark your emails as spam, impacting your open rates.
  5. Subject line effectiveness: If your subject lines are not compelling or enticing, subscribers may be less likely to open your emails.
  6. Competition: Increased competition or changes in the competitive landscape could affect open rates as subscribers receive more emails from other sources.
  7. Lack of segmentation: If you’re not segmenting your email list effectively, you may be sending irrelevant content to certain segments, leading to lower open rates.
  8. Technical issues: Technical issues such as deliverability problems, spam filtering, or changes in email client algorithms can affect open rates. Monitor your email deliverability metrics and address any issues promptly.

By analyzing these potential factors and making adjustments to your email strategy as needed, you can work towards improving and maintaining open rates in your bulk email campaign.

What to do to resolve the gradual decrease of open rate in my campaign?

Last update: April 28, 2024

It’s quite difficult to accurately find the actual reason behind the gradual decrease of open rate in your campaign. For example, it might be due to the words you used while composing the email content, or some misconfiguration of your DNS server, or maybe these segments are less responsive compared to the previous segments, or the ISP is categorizing you in such a way that is causing less open rate etc.

You need to assume the reasons, work on them, and monitor the progress. We can guide and share resources on this.

For example,
You need to set the necessary DNS records to increase your email deliverability – This blog post might help you: How To Setup SPF DKIM And DMARC In AWS Account.

Also, you can set the Action URL on MailBluster. You can set it up from the Settings > Custom URL page.

You should follow these best practices:
1. The Ultimate Guide on How to Prevent Your Email Newsletters from Going to SPAM
2. Best Email Opening Lines to Hook Your Audience
3. Email Images: Complete Guide to Using Images in Email
4. Email Footer: Do Not Forget about the Last Impression

What should you do if your IP is listed on some servers and blocked, affecting your mailing service and open rate?

Last update: May 29, 2024

Based on our observations with our customers, seeing an IP address on a spam list is quite common for AWS users. Here are some reasons why this happens:

Shared IP Pool: By default, AWS sends emails from a shared IP pool unless a dedicated IP is used. These IP addresses were previously used by other AWS users, and their activities may have caused the IP to be listed on spam lists. When this IP pool was assigned to you, it was already on a spam list, meaning you might be affected by the activities of other AWS users.

New IP Address: If you used another email sending service before, your emails were sent from a different IP address. Email Service Providers (ESPs) recognize you by that previous IP address. When you start sending emails from AWS, you’re using a new IP address. The ESPs can’t match this new IP address with their records of your sender domain, which can negatively impact deliverability. To mitigate this, it’s better to send a smaller volume of emails initially from the new IP address and gradually increase the amount. This allows ESPs more time to recognize and trust your new IP address.

You can follow these steps:

1. You might have an issue in SPF record, so you need to look into it.

2. Improve your email.  Too many images make your email bulky. Bulky emails are tough to deliver and impact deliverability. We have seen customers getting better output by sending simple text emails. It looks like a personal email.

3. Avoid adding any URLs other than your sending domain to your email content. For example, don’t use URL from sendgrid.com or similar.

4. Set Action URL from the Settings > Custom URL section. Add your own domain/subdomain. It will improve deliverability. It’s part of point 3.

5. Personalize your email campaign. For example, it’s better to write Hi {{first_name}}, instead of Hi Guys,. To ESPs, it means you know who you are sending emails to and each email is different.

6. Create email campaigns using drag and drop editor. It creates better HTML code that supports all types of devices and ESPs.

For more detailed information, you can read this blog: https://mailbluster.com/blog/the-ultimate-guide-on-how-to-prevent-your-email-newsletters-from-going-to-spam . If you can follow this correctly, it would definitely help you a lot.

How do you remove your IP address if it’s on a blacklist?

Last update: May 29, 2024

You can try these steps to remove your IP address from Sorbs Spam Blacklist:

The Sorbs Spam Blacklist allows users to request removal.  Here are the steps to request:

  1. Create an account on the Sorbs website.
  2. Sign in to your account.
  3. Select the “Delist An IP Address” option.
  4. Enter your unique IP Address and press “continue”.
  5. A list of IP addresses will appear. Find yours and select “proceed” on each row where your IP address is listed.
  6. Select the “Get Help/Support” button to create a ticket.
  7. Once the ticket is created, you will receive a message indicating that your ticket was opened.

There could be two outcomes after trying these steps:

  1. Your IP has been auto-removed
  2. Your IP has not auto-removed

If your IP was not auto-removed, you can reply to the ticket and argue your case further. For more information, you can follow this link: Sorbs Support.

Why my subscribers are getting this message “This message might be suspicious or spam”?

Last update: July 7, 2024

Even after registering your domain name and email, you might still encounter this issue. Follow these steps carefully to resolve it:

You need to follow these steps carefully to overcome the above issue:

1. You need to set up a DMARC record.

2. Send emails from an address other than your [email protected]. For example, use [email protected] or [email protected] for marketing emails, and [email protected] for notifications.

3. Consider using a subdomain if desired. For instance, use [email protected] for marketing emails. Using a subdomain helps manage and protect your primary domain’s reputation—if a subdomain is flagged for spam, it won’t affect your main domain.

4. Improve your email content significantly; this is crucial.

Visit Really Good Emails for guidance on email purposes, crafting compelling subject lines, and more. These blog posts can also be helpful: