Postmark
Email for web applications
Zintlr
Prospect your next customer
Updated February 2026
| Postmark | Zintlr | |
|---|---|---|
| Rating | 5.0★ | 4.6★ |
| Reviews | 17 | 18 |
| Pros | 9 | 13 |
| FactScore™ | 62.8 | 58.3 |
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 Fast performance Human support Transactional email Affordable pricing Email templates Excellent documentation Simple API Spam filterBoth tools — Pros
—Only in Zintlr — Pros
ZScout capabilities Contact information retrieval Lead generation Personality Intel Verified prospect data Bulk prospecting Customer keywords and profiles Detailed customer and company info Technology insights Data export Email validation Executive information access Unlimited prospectingOnly in Postmark — Cons
—Both tools — Cons
—Only in Zintlr — Cons
Bad segmentation Complex onboarding Incomplete features Lack of knowledge base Old dataDetails
| Postmark | Zintlr | |
|---|---|---|
| Categories | Email clients, Email marketing | Email marketing, CRM software, Marketing automation platforms, Lead generation software |
| Platforms | Web · iOS | Web |
| Became Popular | July 23, 2014 | June 22, 2023 |
| Website | postmarkapp.com | zintlr.com |
Who Should Pick Which?
Choose Postmark if...
- Reliable email delivery
- Fast performance
- Human support
Choose Zintlr if...
- ZScout capabilities
- Contact information retrieval
- Lead generation
With a FactScore™ of 62.8 vs 58.3, Postmark leads in community reception. Postmark uniquely offers Reliable email delivery and Fast performance, while Zintlr stands out for ZScout capabilities and Contact information retrieval.
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.
Zintlr
Wow, congrats on the launch, Zintlr team! 🚀 The features of zScout are super impressive - being able to find emails and phone numbers, doing bulk prospecting, and getting intel on prospects' tech ...
It sounds awesome, but once in I see nowhere how to get personality intel of a contact I've found. Ther is also tons of apparent features whose function are not very intuitive. In other words, I'm ...
Zintlr empowering features for growth-focused individuals and GTM teams are fantastic, and zScout capabilities for prospecting make it a game-changer. A well-deserved five stars for this fantastic ...
Related Comparisons
Frequently Asked Questions
Which is better, Postmark or Zintlr?
Based on FactScore™, Postmark leads with a score of 62.8 vs 58.3. Postmark has a higher rating of 5.0★ compared to 4.6★.
What are the pros of Postmark compared to Zintlr?
Postmark uniquely offers: Reliable email delivery, Fast performance, Human support, Transactional email, Affordable pricing.
What are the pros of Zintlr compared to Postmark?
Zintlr uniquely offers: ZScout capabilities, Contact information retrieval, Lead generation, Personality Intel, Verified prospect data.
Is Postmark better rated than Zintlr?
Postmark is rated 5.0★ from 17 reviews. Zintlr is rated 4.6★ from 18 reviews.
What is the FactScore™ of Postmark and Zintlr?
FactScore™ weighs rating and review volume together. Postmark scores 62.8 and Zintlr scores 58.3.
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