Prompt
I thought the list was clean but bounces are still high
Latest observation
Oct 5, 2026
OpenAI APIWeb search: off
High bounces usually mean the issue isn’t just list cleanliness. A few common causes:
- Bad deliverability/reputation: your domain or IP may be flagged, even if the list is “clean.”
- Old/low-quality contacts: some addresses may be valid but rarely checked or already abandoned.
- Too many hard bounces already: mailbox providers start rejecting more mail if you keep hitting invalid addresses.
- Authentication problems: missing/incorrect SPF, DKIM, or DMARC can increase rejections.
- Content or sending pattern issues: spam-like wording, broken links, sudden volume spikes, or a new sending domain/IP.
- Segment mismatch: people on the list may not expect the message, leading to blocks or complaints that look like bounces in some tools.
Quick checks:
- Separate hard vs soft bounces.
- Review the bounce codes/messages from the email platform.
- Confirm SPF, DKIM, DMARC are set correctly.
- Check whether bounces cluster by provider, e.g. Gmail, Yahoo, corporate domains.
- Try a smaller send to your most engaged segment first.
If you want, paste a few bounce codes and I can help interpret what’s actually causing them.