GlockApps vs Spamcheck by Postmark: Which Should You Choose in 2026?
Both prices below were read from each vendor's own pricing page on the date shown.
Pricing side by side
| Plan | GlockApps | Spamcheck by Postmark |
|---|---|---|
| tier 1 | Free — 2 spam test credits, 10,000 DMARC messages, 1 user | Free — Unlimited web scans and open REST API calls, instant SpamAssassin score breakdown |
| tier 2 | $59/mo — 360 spam tests, 600,000 DMARC messages, 1 user | — |
| tier 3 | $99/mo — 1,080 spam tests, 1.2M DMARC messages, 5 users | — |
| tier 4 | $129/mo — 1,800 spam tests, 12M DMARC messages, 10 users | — |
read from both vendors' pricing pages · 20 Aug 2026 · how we verify
Choose GlockApps if
- Senders diagnosing a sudden drop in open rates
Choose Spamcheck by Postmark if
- Developers integrating automated pre-send spam scoring into custom email software
- Email designers checking newsletter HTML for triggering spam filter rules
Where each one disappoints
GlockApps
- Teams needing warmup — this tests, it does not warm
Spamcheck by Postmark
- Multi-channel SMS and push marketing journeys
Compiled by Stepan Noianov from both vendors' own sites. Something wrong? Report an inaccuracy.
Other options
All GlockApps alternatives All Spamcheck by Postmark alternatives