Mimestream
A native macOS email client for Gmail
Postmark
Email for web applications
Updated February 2026
| Mimestream | Postmark | |
|---|---|---|
| Rating | 4.4★ | 5.0★ |
| Reviews | 16 | 17 |
| Pros | 7 | 9 |
| FactScore™ | 53.9 | 62.8 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Mimestream — Pros
Gmail integration Native macOS integration Beta stability Clean ui Customizable interface Easy setupBoth tools — Pros
Fast performanceOnly in Postmark — Pros
Reliable email delivery Human support Transactional email Affordable pricing Email templates Excellent documentation Simple API Spam filterOnly in Mimestream — Cons
Subscription model Limited to Gmail Account and settings sync Advertisement display Imap accounts missing Lack of light/dark mode toggle Send later mail Snoozed emailBoth tools — Cons
—Only in Postmark — Cons
—Details
| Mimestream | Postmark | |
|---|---|---|
| Categories | Email clients | Email clients, Email marketing |
| Platforms | Web | Web · iOS |
| Became Popular | September 11, 2020 | July 23, 2014 |
| Website | mimestream.com | postmarkapp.com |
Who Should Pick Which?
Choose Mimestream if...
- Gmail integration
- Native macOS integration
- Beta stability
Choose Postmark if...
- Reliable email delivery
- Human support
- Transactional email
With a FactScore™ of 53.9 vs 62.8, Postmark leads in community reception. Mimestream uniquely offers Gmail integration and Native macOS integration, while Postmark stands out for Reliable email delivery and Human support.
What Users Say
Mimestream
Congrats on the launch folks 🎉 I’ve used Mimestream as my only desktop client since September 2020 and I’ve been impressed with the quality of your work and rigorous approach running this beta for...
A native MacOS email client for Gmail done the right way!!
Great product that works really fast.
Postmark
We use Postmark to send emails and manage newsletters directly from BlogBowl. Big thanks to Postmark for their reliable API and top-notch deliverability, which makes sure your newsletters actually ...
We use Postmark not only for our emails, but also to power Ply's built-in dynamic email capabilities. It's reliable, well documented and most of all - comes with awesome human support.
Once you get familiar with Postmark's layouts and templates, the service is great for quickly creating email templates and sending them out using their simple API. The UI is simple and intuitive.
Related Comparisons
Frequently Asked Questions
Which is better, Mimestream or Postmark?
Based on FactScore™, Postmark leads with a score of 62.8 vs 53.9. Postmark has a higher rating of 5.0★ compared to 4.4★.
What are the pros of Mimestream compared to Postmark?
Mimestream uniquely offers: Gmail integration, Native macOS integration, Beta stability, Clean ui, Customizable interface.
What are the pros of Postmark compared to Mimestream?
Postmark uniquely offers: Reliable email delivery, Human support, Transactional email, Affordable pricing, Email templates.
Is Mimestream better rated than Postmark?
Mimestream is rated 4.4★ from 16 reviews. Postmark is rated 5.0★ from 17 reviews.
What is the FactScore™ of Mimestream and Postmark?
FactScore™ weighs rating and review volume together. Mimestream scores 53.9 and Postmark scores 62.8.
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