Email Deliverability Guide — How to Keep Emails Out of Spam
Stop your emails from landing in the spam folder
Deliverability isn't just about hitting 'send.' It's about the chain of trust from your server to the recipient's inbox. Break one link and your email goes to spam, or bounces, or disappears silently. We analyzed 250 verifications to find the most common break points.
- DNS MX records exist and point to a working mail server
- SPF record authorizes your sending server's IP
- DMARC policy tells receivers to reject unauthorized mail
- Your sending IP is not on any RBL blacklist
- Your mailing list is clean — no dead or catch-all addresses
Run MailScout on your sending domain. Check: SPF exists, DMARC is set to at least 'quarantine,' no RBL hits, and MX records are responsive. Then run MailScout on your mailing list before each campaign — remove invalids and catch-alls. This two-step process cuts bounce rates by 90%+.
Email deliverability isn't a one-time fix. DNS records change, servers go down, IPs get blacklisted. Use our dashboard to track your domain's health over time. Set up alerts for RBL hits and DMARC changes.
Enter your own sending domain in MailScout right now. If the trust score is below 50, your emails are likely landing in spam. Fix the missing items and re-check — you should see the score jump above 60.