Tracking Conversion Metrics
How do I test if my email is going to spam?
Learn simple ways to test email deliverability, find out why emails land in spam, and fix it so your messages reach inboxes and get replies. Start with ...
How do I test if my email is going to spam?
Key Facts
- Nearly 88% of email senders cannot correctly define delivery rate versus deliverability according to Mailgun's 2025 survey
- Primary inbox placement jumped 14 points to 63% in 2026 while spam placement fell to 33% per Unspam's deliverability benchmark
- 70% of senders do not use free Google Postmaster Tools to monitor sender reputation reveals Mailgun's global sender survey
- Only 14% of tested emails include the required List-Unsubscribe header despite Google and Yahoo mandates Unspam's 2026 report found
- Gmail and Yahoo require spam complaint rates below 0.1% — above 0.3% means likely spam filtering Mailgun's industry standards confirm
- IP blacklist listings tripled from 2% to 6% of senders in 2026, signaling shared infrastructure risks Unspam's benchmark data shows
- Seed-list inbox placement tests (GlockApps, MailReach) are far more useful than SMTP delivery metrics SalesHive's deliverability guide advises
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