Why Business Emails Go to Spam
Investigate authentication, reputation and message content without promising inbox placement.
Spam placement is decided by the recipient's systems using multiple signals. Correct hosting configuration helps, but no sender can guarantee every message reaches an inbox. Diagnose the actual message and destination before changing DNS.
Practical steps
- Collect a sample message header, sending time, recipient domain and any delivery error. Avoid publishing private message contents or recipient lists.
- Check SPF, DKIM and DMARC results and whether the visible From domain aligns with the authenticated domain. Identify which system actually sent the message.
- Review permission to contact recipients, bounce handling, list hygiene and sending volume. A purchased address list or sudden bulk send can damage reputation regardless of hosting.
- Check misleading subject lines, unsafe links, unusual attachments and message formatting. Test changes with consenting recipients rather than repeatedly resending the same campaign.
Check the result
Compare headers from a new test with the original and monitor real delivery errors. Authentication passing is useful evidence, but does not by itself demonstrate inbox placement for every recipient.
Before you proceed
Do not weaken SPF or DMARC indiscriminately to make one sender work. Correct the sender authorisation and alignment, and ask support before changing domain-wide policy.