
Exim
Sendmail
qmail
Mail-in-a-box
Zimbra
KumoMTA
iRedMail
Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.

Mailgun
Resend
Brevo
Mailjet
MailChimp
Amazon SES
Mandrill
Postmark is the easiest and most reliable way to be sure your important transactional emails get to the inbox. Simply & reliably parse recieved email to JSON for your webapp.

Which is more popular?
Based on our record, Postmark seems to be a lot more popular than Postfix. While we know about 57 links to Postmark, we've tracked only 1 mention of Postfix.
Website, pricing, platforms and company facts side by side.
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| Website | postfix.org | postmarkapp.com |
| Pricing | — | |
| Company | — | Startup from the United States |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Postfix is ideal for businesses, educational institutions, or individual users who need a robust and secure email server. It is especially recommended for environments requiring high-performance and stable email systems, as well as those looking for a solution that can handle large-scale email distribution efficiently.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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Using Postmark to send email from Darkroom Booth
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Postfix and Postmark. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Postfix is an MTA that allows the user to receive and deliver electronic mail. The platform is open-sourced that is easy to administer, attempts to be fast, and a secure way for the usage of EM. It is also known by...
Postfix is very emphatic when it comes to security. Like iRedMail, it is able to encrypt your sessions and perform certificate-based authentication to keep your mail services secure, private, and protected. Postfix...
Postmark are the most expensive transactional email service (10x the cost of Amazon SES), so what do they do to justify the sky high pricing? Their focus seems to be on providing a high-end service using only the best...
Recommendations tracked on public social media and blogs since March 2021.


Read the documentation on postfix.org and/or buy one of the many available Postfix books (it really helps to understand the Postfix philosophy). Source: over 5 years ago
Postmark has been doing exactly one thing since 2010: transactional email, done carefully. It enforces a hard separation between transactional and bulk/marketing sending streams (you can't mix them on the same account), which is exactly... - Source: dev.to / 20 days ago
We want to shout out Postmark for sponsoring this challenge. Postmark's developer-focused API and reliable inbound email parsing made these innovative projects possible, allowing the community to focus on creativity rather than email... - Source: dev.to / over 1 year ago
PurifyPDF is a privacy-first PDF sanitization workflow built using n8n, Postmark, PDF.co, and Airtable. - Source: dev.to / over 1 year ago
When comparing Postfix and Postmark, you can also consider the following products.

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
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A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.
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Sendmail is a general purpose internetwork email routing facility that supports many kinds of...
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qmail is the name of an advanced level of mail transfer agent for the UNIX based operating systems.
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Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
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