Postmark
Email for web applications
Selzy
Start Strong: Easy Email for Startups, expert help 24/7
Updated February 2026
| Postmark | Selzy | |
|---|---|---|
| Rating | 5.0★ | 4.9★ |
| Reviews | 17 | 9 |
| Pros | 9 | 11 |
| FactScore™ | 62.8 | 48.9 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Postmark — Pros
Reliable email delivery Human support Transactional email Email templates Excellent documentation Simple API Spam filterBoth tools — Pros
Fast performance Affordable pricingOnly in Selzy — Pros
Modern design User-friendly interface 24/7 expert support Free plan AI writing assistant Automation features Email customization Personalized deliverability tips TemplatesOnly in Postmark — Cons
—Both tools — Cons
—Only in Selzy — Cons
Bad support experienceDetails
| Postmark | Selzy | |
|---|---|---|
| Categories | Email clients, Email marketing | Email marketing |
| Platforms | Web · iOS | Web |
| Became Popular | July 23, 2014 | October 24, 2023 |
| Website | postmarkapp.com | selzy.com |
Who Should Pick Which?
Choose Postmark if...
- Reliable email delivery
- Human support
- Transactional email
Choose Selzy if...
- Modern design
- User-friendly interface
- 24/7 expert support
With a FactScore™ of 62.8 vs 48.9, Postmark leads in community reception. Postmark uniquely offers Reliable email delivery and Human support, while Selzy stands out for Modern design and User-friendly interface.
What Users Say
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.
Selzy
Congratulations on the launch!! I especially like the design, it's super user friendly and smooth! Could you tell me what is your unique value proposition/ features that differentiate you from simi...
Amazing! I think the "time to value" of Selzy is phenomenal - it usually takes much longer to get an email campaign up and running on other platforms. I also really dig the design and branding here...
Wow, Selzy looks like the perfect email marketing tool for startups! The 24/7 expert support is a game-changer, especially for those of us just starting out. I'm curious to know more about the auto...
Related Comparisons
Frequently Asked Questions
Which is better, Postmark or Selzy?
Based on FactScore™, Postmark leads with a score of 62.8 vs 48.9. Postmark has a higher rating of 5.0★ compared to 4.9★.
What are the pros of Postmark compared to Selzy?
Postmark uniquely offers: Reliable email delivery, Human support, Transactional email, Email templates, Excellent documentation.
What are the pros of Selzy compared to Postmark?
Selzy uniquely offers: Modern design, User-friendly interface, 24/7 expert support, Free plan, AI writing assistant.
Is Postmark better rated than Selzy?
Postmark is rated 5.0★ from 17 reviews. Selzy is rated 4.9★ from 9 reviews.
What is the FactScore™ of Postmark and Selzy?
FactScore™ weighs rating and review volume together. Postmark scores 62.8 and Selzy scores 48.9.
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