A high bounce rate tells mailbox providers your data quality is poor. This guide explains how to reduce email bounce rate and protect your domain reputation.
Hard bounces vs soft bounces
Hard bounces mean the address is invalid or permanently unavailable. Soft bounces are temporary issues like full inbox or server timeout. Both matter, but hard bounces are more dangerous at scale.
Main causes of high bounce rate
- Old or purchased lists
- Typos at signup
- Disposable emails
- Deleted mailboxes
- No re-verification before campaigns
7 ways to reduce bounce rate fast
- Verify every list with bulk email validation software
- Use double opt-in on forms
- Remove hard bounces immediately
- Re-verify lists older than 30 days
- Avoid purchased email lists
- Warm up new sending domains gradually
- Authenticate email with SPF, DKIM, DMARC
Use TsEmailValidator.exe before every major send
TsEmailValidator.exe helps you identify invalid and risky addresses before they damage your sender score.
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Benchmarks
Aim for under 2% bounce rate on marketing campaigns. Cold outreach should also stay low after proper verification.
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