Why Your Business Emails Go to Spam (And How to Fix It)
Authentication failures, reputation, content signals, and list hygiene — a practical checklist to get back to the inbox.
Spam folder placement is rarely random. Receivers score every message: who sent it, whether the domain authenticates, how recipients reacted in the past, and whether the content looks like bulk abuse.
Fix authentication first
- Publish correct MX, SPF, DKIM, and DMARC records
- Verify all four show green in your admin panel
- Send from addresses on the same domain you authenticated
- Use a transactional API key marked no-reply only for one-way mail
Warm up new domains
A brand-new domain sending thousands of messages on day one looks like a compromised host. Start with real conversations, then scale automated mail gradually.
Use delivery logs
OquMail records every SMTP response — 250 delivered, 550 user unknown, 421 deferred. When placement drops, the logs tell you whether it is reputation, content, or a specific recipient server.
Want to see how your own domain is set up? Use the free SPF checker, DMARC checker and MX lookup: they run in your browser and store nothing.