Prompt
Why are my emails going to spam?
Latest observation
Oct 7, 2026
OpenAI APIWeb search: off
Emails usually land in spam for one of a few common reasons:
1) Poor sender reputation
If your domain, IP, or email service has a history of spam-like behavior, inbox providers may distrust your messages.
2) Missing authentication
If you don’t have these set up correctly, emails are more likely to be flagged:
- SPF
- DKIM
- DMARC
3) Content triggers
Certain wording, formatting, or patterns can look spammy:
- Too many salesy phrases
- ALL CAPS
- Excessive links or images
- Weird HTML formatting
- Attachments that look risky
4) Low engagement
If recipients often:
- ignore your emails
- delete them without opening
- mark them as spam
…then providers learn that your mail may not be wanted.
5) Bad list quality
If you’re mailing:
- old addresses
- purchased lists
- invalid emails
- people who didn’t opt in
…spam placement is much more likely.
6) Sending issues
Problems like:
- sudden volume spikes
- inconsistent sending patterns
- shared IP issues
- misconfigured mail servers
can hurt deliverability.
7) Blacklists or complaints
Your domain or IP may be on a blacklist, or you may be getting complaint reports from recipients.
What to check first
- Verify SPF, DKIM, and DMARC
- Check whether your domain/IP is blacklisted
- Review your email content for spammy patterns
- Make sure your list is permission-based and clean
- Warm up sending volume gradually if you’re sending in bulk
- Check bounce and complaint rates
If you want, I can help you diagnose it step by step. If you share:
- your sending platform,
- whether it’s marketing or transactional email,
- and a sample subject line/body, I can help pinpoint the likely cause.