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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?
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?
How to generate API key from MailBluster?
What is the API rate limit for MailBluster?
How could you obtain the lead hash so I can read the lead?
Where do I find information on the MailBluster Developer API?
Why are you getting a CORS error when making requests to the MailBluster developer API from the frontend, and how can you resolve it?
Can I update multiple leads using Developer API?
Can I send bulk emails using MailBluster Developer API?
Is it possible that a user can limit sent messages per minute or second?
How to connect your Website Forms with MailBluster?
Is there a WordPress plugin for MailBluster?
How to Embed a Form your created in WordPress?
How to connect and create WordPress Form using MailBluster WordPress Plugin?
How to download MailBluster WordPress Plugin and install it in your localhost?
Is it possible to connect WooCommerce with MailBluster?
How to connect WooCommerce with MailBluster?
How do I connect MailBluster with Pabbly using Google Sheets?
How to connect MailBluster with Make (formerly Integromat) using Google Sheets?
How to connect MailBluster with Integrately using Google Sheets?
How to connect MailBluster with Zapier using Google Sheets?
How to integrate MailBluster with Zoho?
How to integrate MailBluster with Salesforce using Pabbly?
How to integrate MailBluster with Salesforce using Zoho Flow?
Integration with Gravity Forms
Does MailBluster has Shopify integration?
Is it possible to connect OpenCart with MailBluster?
Can I integrate Gmail annotations with MailBluster?
What plugins are available in the MailBluster API Development Community?

Connect Postmark account with MailBluster

Last update: July 20, 2025

Postmark is an email service designed for fast and reliable email delivery. It is commonly used for sending important system generated emails like password resets, account confirmations, receipts & invoice, notification emails and marketing emails.

To connect Postmark with MailBluster, first, you need to go to Postmark site and create an account with your information.

After filling up all the details, click on Let’s get started.

Go to Postmark site and create an account  with your information.

Click on Message Streams, and you will notice Default Broadcast Stream, Default Transactional Stream and Default Inbound Stream are present.

Click on Message Streams, and you will notice Default Broadcast Stream, Default Transactional Stream and Default Inbound Stream are present.

Now, click on Settings, and enter Server name. Make sure you enable SMTP, Open tracking and Link tracking. Tick on HTML and Text as well.

Click on Settings, and enter Server name. Make sure you enable SMTP, Open tracking and Link tracking. Tick on HTML and Text as well.

Click on Request approval.

Click on Request approval.

You need to provide answers to these questions to get your Postmark account approved successfully.

You need to provide answers to these questions to get your Postmark account approved successfully. Once you entered all the details, click Request approval button.

In the Postmark account approval form, the question “How many emails do you plan to send or receive each month?” is meant to estimate your email usage. Your answer should be based on your expected email volume. If you’re unsure, provide a rough estimate based on:

  • Transactional emails (order confirmations, password resets, etc.)
  • Marketing emails (if using Postmark for broadcasts)

These are the common responses:

  • Less than 10,000 → Small businesses/startups
  • 10,000 – 100,000 → Medium-sized businesses
  • 100,000+ → Large-scale operations

In the Postmark account approval form, the question “Why are you considering Postmark?” is used to understand your use case and ensure you’re using Postmark for legitimate transactional or marketing email purposes.

Here are some valid responses based on different use cases:

  • For Transactional Emails (Best fit for Postmark)
    1. “We need a reliable service for sending transactional emails such as order confirmations, password resets, and account notifications.”
    2. “We’re looking for a high-deliverability email service for our application’s automated emails.”
  • For MailBluster Users (If you are using for Marketing/Transactional emails)
    “We are integrating Postmark with MailBluster for marketing email delivery, ensuring fast and reliable email sending.”

In the Postmark account approval form, the question “What types of messages do you intend to send with Postmark?” helps Postmark determine if your use case aligns with their transactional email focus.

Here are some best responses (Transactional Emails – Postmark’s Main Use Case):

  • Order confirmations
  • Password resets
  • Account verification emails
  • System notifications
  • Receipts and invoices
  • User activity alerts (e.g., login notification, security alerts)

If you are using Postmark with MailBluster:

  • “We intend to send transactional emails such as order confirmations, account-related notifications, and system-generated alerts through our MailBluster integration.”
  • Avoid Responses like: Bulk marketing emails, cold outreach, or unsolicited promotional messages → Postmark strictly limits marketing emails to its Broadcast Message Stream.

If you need both transactional and marketing emails, you can mention: “Primarily transactional emails, with occasional broadcast messages to engaged users.”

In the Postmark account approval form, the question “How are new subscribers/recipients acquired for these messages?” helps Postmark verify that you’re sending legitimate, permission-based emails and not unsolicited spam.
Here are some best responses (Permission-Based Acquisition Methods):

  • Users sign up through our website and explicitly opt in to receive transactional emails.
  • Customers create accounts on our platform, and we send them order confirmations, password resets, and system notifications.
  • We collect emails through a double opt-in process, ensuring users confirm their subscription before receiving emails.
  • Recipients interact with our business (e.g., purchases, account sign-ups, or service usage), and emails are triggered based on their actions.

If you are using MailBluster then,

  • Our recipients are acquired through opt-in forms on our website. We only send emails to users who have explicitly subscribed or engaged with our services.

Avoid these responses which could lead to rejection:

  • We purchase email lists.
  • We scrape emails from websites.
  • We send cold emails to potential leads.

Note: Postmark has strict anti-spam policies, so ensure your response reflects explicit user consent and a clear opt-in process.

Once you entered all the details, click Request approval button and you will receive a confirmation that the Postmark team will contact you within 24 hours.

Getting your account approved by answering these questions by Postmark.

Now, go to MailBluster > Your Brand > Settings > SMTP Providers. You will need to obtain Account Token and Sever Token from your Postmark account.

Go to MailBluster > Your Brand > Settings > SMTP Providers. You will need to obtain Account Token and Sever Token from your Postmark account.

To obtain Account Token, go to your Postmark account > Account > API Tokens and click on the Account API tokens highlighted below which will copy the token value.

Go to your Postmark account > Account > API Tokens and click on the Account API tokens highlighted below which will copy the token value.

Paste the token value under MailBluster Brand > Settings > SMTP Providers > Account Token which you have just obtained from Postmark.

Paste the token value under MailBluster Brand > Settings > SMTP Providers > Account Token.

Again, go to Postmark > click on Servers > click on your created server ‘MyCompany‘.

Go to Postmark > click on Servers > click on MyCompany.

Now, click on the API Tokens and click on the Server API tokens highlighted below which will copy the token value.

Click on the API Tokens and click on the Server API tokens highlighted below which will copy the token value.

Paste the token value under MailBluster Brand > Settings > SMTP Providers > Server Token which you have just obtained from Postmark. Then, click Save connection.

Paste the token value under MailBluster Brand > Settings > SMTP Providers > Server Token which you have just obtained from Postmark. Then, click Save connection.

Once connected, you will notice that the right side bar will show Postmark Max send rate.

Once connected, you will notice that the right side bar will show Postmark Max send rate.

Verify Sender Signature in Postmark

Last update: July 20, 2025

Verify a sender signature in Postmark ensures that the emails you send are authenticated and trusted by email providers, reducing the likelihood of them being marked as spam.

To verify a sender signature, you need to set up SPF (Sender Policy Framework)DKIM (Domain Keys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting, and Conformance) records for your domain.

Here’s how to do it:

1. Log in to Postmark account and navigate to the Sender Signatures section.

2. Then click on Add Signature or select an existing sender. You can enter the email address and domain you want to verify.

Verifying email address and domain under Sender Signatures.

3. Configure DNS Records by clicking on DNS Settings or Add a DKIM DNS record. Postmark will provide you with the required DNS records (SPF, DKIM, and DMARC) to add to your domain’s DNS settings.  Here is what you need to do:

a) For SPF Record

  • Postmark will provide an SPF record (e.g., v=spf1 include: spf.mtasv,net ~all).
  • Add this record to your domain’s DNS settings as a TXT record.

b) For DKIM Record

  • Postmark will generate a DKIM key (e.g., a CNAME record like pm._domainkey.yourdomain.com).
  • Add this CNAME record to your domain’s DNS settings.

c) For DMARC record

  • Create a DMARC record to specify how email providers should handle emails that fail SPF or DKIM checks.
  • Example DMARC record: v=DMARC1; p=none; rua=mailto:[email protected].

4. Verify the DNS Records after adding the DNS records in the DNS Settings. Click on the Verify button under DKIM and Return-Path. Postmark will check if the records are correctly configured and confirm the verification.

Verify the DNS Records after adding the DNS records in the DNS Settings.

You will see “Verified” under DKIM, Return path within 48 hours. You will also notice “Active” is highlighted at the bottom as shown below.

You will see "Verified" under DKIM, Return path after 48 hours.

5. Test the Sender Signature by sending a test mail to ensure everything is working correctly. You can check the email headers to confirm SPF and DKIM authentication.

Note: Verifying Sender Signature improves deliverability by reducing the chances of being flagged as spam. They also build trust with email providers and recipients, making emails with verified signatures more reliable. Additionally, authentication ensures compliance with email authentication standards.