Postmark

Email for web applications

★★★★★ 5.0/5
FactScore™ 62.8
VS

SaneBox

Your Trusted AI Inbox Assistant

★★★★★ 4.9/5
FactScore™ 69.4

Updated February 2026

Postmark SaneBox
Rating 5.0★ 4.9★
Reviews 17 26
Pros 9 7
FactScore™ 62.8 69.4

FactScore™ Comparison

FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.

62.8
Postmark FactScore™
👑
69.4
SaneBox FactScore™
★ SaneBox wins on FactScore™

Pros & Cons

Only in Postmark — Pros

Reliable email delivery Fast performance Human support Transactional email Email templates Excellent documentation Simple API Spam filter

Both tools — Pros

Affordable pricing

Only in SaneBox — Pros

Email organization Email filtering Time-saving Cross-platform compatibility Customer support No additional app required

Only in Postmark — Cons

Both tools — Cons

Only in SaneBox — Cons

Push notification issue

Details

Postmark SaneBox
Categories Email clients, Email marketing Email clients, Customer support tools, AI Chatbots
Platforms Web · iOS Web · iOS
Became Popular July 23, 2014 January 10, 2014
Website postmarkapp.com www.sanebox.com

Who Should Pick Which?

Choose Postmark if...

  • Reliable email delivery
  • Fast performance
  • Human support

Choose SaneBox if...

  • Email organization
  • Email filtering
  • Time-saving

With a FactScore™ of 62.8 vs 69.4, SaneBox leads in community reception. Postmark uniquely offers Reliable email delivery and Fast performance, while SaneBox stands out for Email organization and Email filtering.

3

What Users Say

Postmark

D
Daniil Oct 31, 2025
★★★★★

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 ...

Y
Yaniv Nov 19, 2024
★★★★★

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.

D
Dr Sep 26, 2024
★★★★★

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.

SaneBox

P
Paul Apr 16, 2024
★★★★☆

This has replaced a large number of mail rules I used to have - and more importantly, the time I spent maintaining them. Also adds a bunch of functionality over and above what mail rules can do (ev...

K
Keith Sep 9, 2023
★★★★★

I have been enthusiastically using Sanebox for many years because of its outstanding features. In the past, one would have deleted their email and started over again because the junk email gets so ...

J
Jon Sep 15, 2023
★★★★★

I get about 300 emails each day, 95% are just news or offers and definitely are not critical. SB effective moves them to my news folder, and I can deal with only the 5% that truly are something I n...

Frequently Asked Questions

Which is better, Postmark or SaneBox?

Based on FactScore™, SaneBox leads with a score of 69.4 vs 62.8. SaneBox has a higher rating of 4.9★ compared to 5.0★.

What are the pros of Postmark compared to SaneBox?

Postmark uniquely offers: Reliable email delivery, Fast performance, Human support, Transactional email, Email templates.

What are the pros of SaneBox compared to Postmark?

SaneBox uniquely offers: Email organization, Email filtering, Time-saving, Cross-platform compatibility, Customer support.

Is Postmark better rated than SaneBox?

Postmark is rated 5.0★ from 17 reviews. SaneBox is rated 4.9★ from 26 reviews.

What is the FactScore™ of Postmark and SaneBox?

FactScore™ weighs rating and review volume together. Postmark scores 62.8 and SaneBox scores 69.4.

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