🛠️ Tool
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Freemium
Intermediate
Why we picked it Before you send a real campaign, this tests exactly where your email lands across Gmail, Outlook, Yahoo, and others, so you stop guessing whether the inbox or the spam folder is catching you. It also flags spam-filter scores, blocklist hits, and whether your SPF, DKIM, and DMARC are actually passing. The free check is enough to diagnose a problem before you pay for the deeper seed-list reports.
GlockApps Inbox Insight: Email Deliverability and Inbox Placement Test
From GlockApps by GlockApps
- Shows inbox versus spam placement across the major providers, so you see the real failure, not a generic spam score.
- Checks your sending IP against dozens of blocklists and confirms SPF, DKIM, and DMARC are passing on a real message.
- Run it after any DNS or warmup change to confirm the fix worked instead of assuming it did.
