An email spam test shows you whether your message will reach the inbox or get filtered. Run one before every important send — it takes minutes and can save an entire campaign.
What a spam test checks
Inbox placement — where your email lands at Gmail, Outlook, Yahoo and other providers
Spam score — how filters like SpamAssassin, Google and Barracuda rate your content
Authentication — whether SPF, DKIM and DMARC are correctly configured
Blocklists — whether your sending IP or domain appears on any public blocklist
Emails that pass Gmail but fail Outlook (or vice versa)
Evidence & transparency. Checked against public data: public documentation of spam-testing methodology. Not independently tested by us: tool-specific accuracy benchmarks. Reader should verify: current free test limits at each tool. Last reviewed: June 2026.
Frequently asked questions
How often should I run a spam test?
Before every major campaign, after any infrastructure change, and weekly or monthly for ongoing monitoring.
Can a spam test guarantee inbox delivery?
No. A test shows current placement, but providers update filters constantly. Regular testing reduces risk but cannot guarantee 100% inbox.