Mail-tester gives you a single spam score in seconds, free. GlockApps gives you a per-provider inbox placement report with authentication, blocklists and monitoring. Here is where the line falls.
Mail-tester.com is a free, instant spam checker. Send an email to a generated address, get a score out of 10 with a list of issues. No per-provider breakdown, no monitoring, no DMARC analysis.
GlockApps sends to seed mailboxes across providers and shows where your email actually landed — inbox, spam or tabs — plus spam-filter scores, auth checks and blocklist status.
| Feature | GlockApps | Mail-Tester |
|---|---|---|
| Per-provider placement | Gmail, Outlook, Yahoo, AOL | No |
| Spam score | Google, Barracuda, SpamAssassin | SpamAssassin |
| DMARC analyzer | Yes | No |
| Blocklist check | 50+ lists | Basic |
| Monitoring | Uptime, blocklist, auth | No |
| Price | 2 free, then paid | Free (3/day) |
Run a free GlockApps test and compare the depth to what mail-tester shows.
Run free testIf you just want a quick sanity check — "does my email look spammy?" — mail-tester is fast, free and good enough. It catches obvious content issues, broken auth and common mistakes. For low-volume senders or one-off checks, it is the right tool.
When you need to know where your email lands, not just whether it looks clean. A mail-tester score of 10/10 does not guarantee inbox placement at Outlook. GlockApps shows you the actual result per provider, which matters when you troubleshoot deliverability at scale.
Run a free deliverability test with GlockApps and check your inbox placement across Gmail, Outlook and Yahoo, plus spam score and blocklist status.
Start with 2 free tests →