What is AWS?
What is Amazon SES?
What is an AWS Region?
How to check Reputation Metrics of your AWS Account?
Pricing plans of Amazon SES
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 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?
I’m getting the 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?
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”?
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 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 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?
Can I store images in MailBluster?
What is the maximum file size of an image file that can be used in an 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?
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 you get any single response despite achieving an 80% open rate and a good click ratio during yesterday’s campaign?

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.