
Mailgun
Resend
Twilio
Mailjet
Brevo
Amazon SES
MailChimp
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.

Ghost
Medium
Buttondown
WordPress
MailChimp
beehiiv
Notocat
With Substack, anyone can start a publication that combines a personal website, blog, and email newsletter or podcast. It's quick and simple.

Which is more popular?
Based on our record, Substack should be more popular than Postmark. It has been mentioned 105 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | postmarkapp.com | substack.com |
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| Company | Startup from the United States | 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
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Using Postmark to send email from Darkroom Booth
Monetizing Podcasts and Newsletters - Chris Best of Substack and Jonathan Gill of Backtracks
More videos
How often each product is chosen within a category, 0–100% relative to the other.


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


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...
Substack offers writers of all experience levels the ability to write an email newsletter that’s profitable through subscriptions. Substack provides purpose-built web and newsletter publishing tools to enable writers...
What sеts Substack apart is its sеamlеss intеgration of contеnt crеation and subscription-basеd monеtization. Substack’s usеr-friеndly intеrfacе, distribution tools, and support for various contеnt formats make it a...
Substack and Medium differ primarily in their monetization methods. Medium pays creators based on reader engagement, while Substack enables writers to monetize directly through paid subscriptions to their newsletters....
Recommendations tracked on public social media and blogs since March 2021.


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 / 1 day 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 / about 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
For anyone that would like to see more quantizations tested, I can highly recommend paying a few bucks for oobabooga's testing, which is published on his Substack: https://substack.com/@oobabooga. - Source: Hacker News / 8 days ago
Reminds me of this meme: https://substack.com/@tomasbjartur/note/c-323840878?r=6cjtqn. - Source: Hacker News / 13 days ago
Valid criticisms of AI - safety critics who think AI can take over the world like Yud (I find this the least credible but still valid) - Bernie type of critics who think AI can cause widespread job losses - Ruxandra Teslo who thinks AI... - Source: Hacker News / 15 days ago
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Ghost is a fully open source, adaptable platform for building and running a modern online publication. We power blogs, magazines and journalists from Zappos to Sky News.
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Welcome to Medium, a place to read, write, and interact with the stories that matter most to you.
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Brings voice and messaging to your web and mobile applications.
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Buttondown is the best way to start and run your newsletter
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