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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?
Can I create an AWS account without providing credit card information?
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?
How can I remove an email ID from the sender list to improve deliverability?
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?
Configure a Custom Domain or Subdomain for Tracking
How to prevent Gmail from showing ‘via amazonses.com’?
Why my AWS Account has been “Paused”?
How to resolve AWS Account “Pause” issue?
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?
Disable open tracking for all campaigns sent from your Brand
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?
How can I find the details of the reason for a recipient who marked an email as a complaint?
What is MailBluster? How it works?
What are the features of MailBluster?
What is Email Marketing?
Why MailBluster if you have AWS account for sending emails?
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?
SMTP settings in MailBluster
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?
On which platform is MailBluster built?
Customize MailBluster cookie policy
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?
What is ‘New lead” in the Dashboard?
What is ‘Purchase activity’ in the Dashboard?
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?
What is the MailBluster Affiliate Program, and how does it work?
How can I sign up for the MailBluster Affiliate Program?
Is there any cost to join the affiliate program?
What are the benefits of becoming a MailBluster Affiliate?
Can anyone join the affiliate program, or are there specific eligibility criteria?
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 edit a scheduled campaign in MailBluster?
How to cancel a scheduled campaign?
How to Archive / Unarchive Campaigns?
Changing the width of campaign email
What is the maximum email content size limit?
Why are my emails being clicked automatically?
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?
Configure Double Opt-in in MailBluster
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 large email audiences, and what should the sending schedule and increments be?
Can I store images in MailBluster?
How do I display a sender image in my email campaign?
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 can I see the Ecommerce activity of any specific 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 a Brand?

Last update: July 27, 2025

A brand refers to the name of your organization, company, or product that you need to define after creating a MailBluster account. MailBluster allows you to create multiple brands under a single account without restrictions, and you can assign the same or different AWS accounts to each brand.

The following shows an example on how you can can create Brand from your MailBluster account. Just click on the username > My bands > Create brand.

Creating Brand from username > My brands.

After clicking ‘Create Brand,’ you will be directed to a page where you can enter all the required brand details.

After clicking 'Create Brand,' you will be directed to a page where you can enter all the required brand details.

Create Brand in MailBluster

Last update: July 27, 2025

Please navigate to your username > My brands.

Clicking on My brands

Then click on Create Brand

Clicking on Create brand.

And, fill up the details of the new Brand.

Filling up the details of the new Brand.

Brand name can be the name of your organization or a name of a company or a product brand.

Brand favicon is simply a logo which you can set for your brand. Recommended size for the favicon is 512 pixels (both Length x Width).

Sender name is the name that will show on the email.

Sender email address is the email address that will show in ‘Send from: ’ on the email when recipient receives. This sender email address is also the email address which needs to be verified in Amazon SES first.

Reply to email address is the Email address you have set so that your customers will be able to send reply to this address. Reply to email address is the Email address you have set so that your customers will be able to send reply to this address.

Time Zone needs to be set according to your current location time zone.

Finally click Create brand and your brand will be created.

Delete Brand from MailBluster

Last update: July 27, 2025

If you want to remove your MailBluster Brand, contact our Support Center. Tell us the Brand name or Brand domain (if you have duplicate brands) you want to delete from your MailBluster account. Do remember, deleting it means everything linked to that brand—like leads, campaigns, reports, invoices, cards, and AWS credentials—will also be gone. Once it’s deleted, we can’t bring back the Brand’s data.

You can obtain Brand name and domain from your MailBluster settings as shown below:

Brand name and Brand domain are required for Brand deletion

Change Brand email address in MailBluster

Last update: July 27, 2025

To change your brand email address (also known as the ‘sender email address’) in MailBluster, go to Brand > Settings > General and add your verified email address to set it as your brand email address. Ensure the email address is first verified and approved by Amazon SES.

Sender email address or Brand email address of the Brand 'Aviato'

Create multiple Brands under one MailBluster account

Last update: July 27, 2025

You can create unlimited number of Brands under one MailBluster Account free of any charges. There are no restrictions and you can connect multiple Brands to just one or same AWS Account.

The following is a screenshare showing multiple Brands connected to one AWS Account.

Selecting Brands in MailBluster

Invite others to use your Brand in MailBluster

Last update: July 27, 2025

MailBluster has three predefined roles: admin, manager, and viewer. You can assign users to one of these roles. But you can’t change the role’s permissions or create a new role.

To invite a new user to your brand, go to your Brand > Settings > Users and click Invite New User.

Clicking Invite New User.

Enter the Email address, set the User role, and your Message (optional). Then click Send invitation.

Entering the Email address, setting the User role, and Message (optional). Then clicking Send invitation.

An invitation email will be sent to the user. You can also Cancel invitation of the user or Resend invitation to the user again.

You can also Cancel invitation of the user or Resend invitation to the user again.

From user end, they will receive an email like this. They need to click Join Brand.

Clicking Join Brand in the Invitation email.

Once clicked, they will forwarded to the Brand selection menu as shown below. They need to click on the Brand from which they were invited. After clicking the brand they will be able to access the Brand and its features.

Selecting the invited Brand.

Add different user types to a specific brand in MailBluster

Last update: July 27, 2025

MailBluster has three predefined user roles or types of users: Viewer, Manager and Admin. You can assign any user to one of these roles by inviting them to your Brand.

Viewer: This type of user can only view reports

Manager: This type of user has full access. But they will not be able to view Billing, AWS Settings, User Management, Update/Delete Brand and Export Leads from MailBluster.

Admin: This type of user has full privileges

Please note: an invited user cannot change permissions of their roles if they are not the owner of the Brand

MailBluster has three predefined user roles or types of users: Viewer, Manager and Admin. You can assign any user to one of these roles by inviting them to your Brand.

Use same email ID for multiple Brands in MailBluster

Last update: July 27, 2025

Each Brand in MailBluster represents a unique business or organization. So, if you have multiple Brands in MailBluster and want to store the same leads in each brand, then you can do that. It will not be considered a duplicate. Duplicate leads is only considered when you try to save same lead (email id) twice in each brand.

Use the same AWS Account for multiple Brands in MailBluster

Last update: July 27, 2025

It seems that Brand A was not created by you, while Brand B was created by someone else. MailBluster allows the same AWS account to be connected to multiple brands, but all those brands must be under the same MailBluster account. In your case, the ownership of these two brands is different, which is why you are unable to connect the same AWS account to both brands.

If you’d like to change brand ownership, our support team can assist with that, so both brands can exist under the same MailBluster account. After that, you’ll be able to use the same AWS account for both brands.

Default unsubscribe link flagged as phishing

Last update: July 27, 2025

MailBluster uses mbmai1.com to generate the web version, subscribe, and unsubscribe URLs. As this domain is used by default for most MailBluster customers, its reputation has significantly diminished, affecting all email campaigns. As everyone knows email marketing is a tool that many scammers, and spammers use a lot and MailBluster is also used for that. MailBluster tries to prevent them, but it’s not possible to block them 100%. The result is a low reputation of the unsubscribe domain and leading to issues like the default “Unsubscribed link” page not opening.

To resolve this issue, you need to change the default auto-generated URL from MailBluster. To change the default auto-generated URL, navigate to the Settings > Custom URL page and set the Action URL. Additionally, ensure you create a simple CNAME record in your domain’s DNS configuration. Once the Action URL is set, MailBluster will use it instead of the default one. For instance, your Action URL could be: https://email.example.com where example.com is your domain.

If you’re not using Cloudflare for DNS, you can contact MailBluster Support for HTTPS protocol for your Action URL. The Action URL in MailBluster will update both the web version and the Unsubscribe URL in your email campaign, resolving the issue.

After setting the Action URL in MailBluster, ensure it’s functional before sending any email campaigns. You can test this by accessing the Action URL from your web browser.

Remove the MailBluster branding from Double opt-in emails

Last update: July 28, 2025

It is only possible to remove MailBluster branding from Double Opt-in emails if you use the Pro Plan. The Pro Plan offers more advanced features, including the ability to customize and remove branding, which is not available in the Starter or any lower-tier plans. If you need to remove the MailBluster branding from your emails, upgrading to the Pro Plan would be necessary.

Remove MailBluster branding in Double Opt-in

Set up an Action URL for your Brand in MailBluster

Last update: July 28, 2025

Mailbluster use it’s default base URL for your subscribe, unsubscribe and web version page.

If you want to change the default URL with your own, you need to set up an Action URL. You can set it using a subdomain of your sender domain.

For example, you can set it to https://subdomain.domain.com, and MailBluster will use this URL as the Action URL for your subscribe, unsubscribe and web version page.

You can configure this from the Brand > Settings > Custom URL tab in MailBluster. Just click on the Set up button.

Click on the Set up button.

Enter the subdomain along with the domain of your website. Then click Continue button.

Input the domain or subdomain of your website. Then click Continue button.

Configure the following DNS records in your domain cPanel. You need to add the CNAME record in your sender domain’s DNS record list that points to MailBluster’s domain secure.mbmail1.com. You also need to add these two TXT records as well.

Configure the DNS records in your domain cPanel.

Once the DNS records are propagated (maximum 48 hours), you will see the Status of the DNS records as Verified.

Once the DNS records are propagated (maximum 48 hours), you will see the Status of the DNS records as Verified.

Click on the Activate button to activate the Action URL.

Click on the Activate button to activate the Action URL.

Once the Action URL is Activated, it will show as ‘Active.’

Once the Action URL is Activated, it will show as 'Active.'

Now, click on Custom URL and then click on View in browser.

Now, click on Custom URL and then click on View in browser.

It will redirect you to the web page of your preferred Action URL you have just set.

Once View in browser is clicked it will redirect you to the Action URL you have just set.

After setting the Action URL, you can test the behavior by sending test emails to yourself. Once you set the Action URL, please make sure it’s working before sending your next campaign. You can test this by simply sending a test email campaign to yourself and check the behavior.

Set up an Unsubscribe Redirection URL for your Brand

Last update: July 28, 2025

When you set the Unsubscribe redirection URL from Settings > Custom URL, it will redirect the receiver to MailBluster default domain after clicking the unsubscribe from your email content, and then after confirming the  Yes, unsubscribe button, it redirects you to the domain you set for Unsubscribe Redirection URL.

Here is an example on how to set Unsubscribe redirection URL:

Click on Settings and then on Custom URL. Then place the redirection URL link under Unsubscribe redirection URL

Here is an example of an Unsubscribe Redirection URL: https://mailbluster.com/unsubscribed.php?email=%e

Here the Lead email address is passed by using the query parameter email=%e

So, when the user clicks Unsubscribe as shown here:

Click on Unsubscribe to unsubscribe from the Mailing List

It will redirect to the page you have set earlier with the email address as shown below:

Email address is shown after redirecting to unsubscribe redirection URL

Fix 404 Error on Unsubscribe Link after using Custom Domain

Last update: July 28, 2025

If you are seeing the error message: 404 Page not found after clicking the Unsubscribe link in your email campaign, then you need to set up Action URL in MailBluster.

The Action URL is used to set a domain for your subscribe, unsubscribe, and web version URLs. If you set the action URL, MailBluster will use it as the base URL for your subscribe, unsubscribe, and web version pages. Otherwise, MailBluster will use its default base URL.

You can set-up Action URL from Settings > Custom URL tab as shown in the screenshot below.

Setting up Action URL in MailBluster.

You’ll also need to set up a CNAME record that directs to the MailBluster domain. Detailed instructions on this process are provided below.

Setting up Action URL DNS record.

After setting up the Action URL and configuring your DNS record, you can test the behavior by sending test email to yourself.

If your DNS is not managed by Cloudflare, please contact MailBluster Support for HTTPS protocol.

Note that the Action URL set in MailBluster should update the web version URL, Unsubscribe URL in your email campaigns.

If you leave the Action URL blank, MailBluster will use its default base URL for your subscribe, unsubscribe, and web version pages.

Fix Domain Verification status failure in MailBluster

Last update: July 28, 2025

If the Domain Verification Status fails, then setting up DNS record after that will have no impact because Amazon SES does not check the records. You need to delete the domain from @‌Senders and then add the domain again, then it will retry.

Deleting the domain whose domain verification status is showing Failed

After deleting the sender domain, add the sender domain again by following this guide:

Delete a specific user from your brand

Last update: July 28, 2025

To delete a specific user from your Brand, go to your Brand > Settings > Users.

Deleting a specific user from the Brand

Scroll down to remove someone specific from the Users list. The Users list will show the person and their email address associated with the Brand.

List of users under the Brand.

Here we have found our specific user. Click Revoke access to remove the user completely from the Brand.

Click Revoke access to remove the user completely from the Brand.

A confirmation dialogue box appears. Click on Revoke.

Confirmation dialogue to remove user. Click Revoke to remove the user.

Access revoked status will shown at the bottom left corner confirming that the specified user has been removed from the Brand.

User is removed and a status is shown at the bottom.

Request a payment link for your Brand when needed

Last update: July 28, 2025

You don’t need to request a payment link each time. You can pay your invoice directly by clicking the ‘Pay Invoice’ button under MailBluster > Brand > Billing > Invoices.

Please refer to the screenshot below.

Click on Pay invoice to pay your due bill.

This way, you won’t need to request a payment link from the MailBluster Support team every month. Please ensure that your billing card is an international credit card and is supported by Stripe.