How to reduce your email bounce rate and protect your reputation
In short: To reduce bounces: verify addresses before sending, decode every bounce to separate hard from soft, remove hard bounces immediately, warm up new domains, and keep authentication clean. A high bounce rate wrecks reputation fast, so treat it as urgent. Start by decoding your bounces with the free Bounce Analyzer.
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Verify addresses before you send
Most bounces are preventable at the source. Verify your list before a campaign: remove malformed addresses, dead domains, role accounts and obvious spam traps. Never send to a purchased list; it is the single biggest cause of high bounce rates and blacklistings.
Decode and categorise bounces
When bounces come back, do not ignore them. Paste them into the Bounce Analyzer to see whether each is hard (permanent) or soft (temporary). This tells you which addresses to remove now and which to retry. Cryptic bounce text becomes a clear action.
Prune hard bounces immediately
- Remove every hard bounce from your list the moment it comes back.
- Retry soft bounces a limited number of times, then remove the persistent ones.
- Suppress permanently so a removed address is never mailed again by mistake.
Continuing to mail hard bounces is what turns a bounce problem into a reputation problem.
Protect reputation around the bounces
Bounces rarely travel alone. Warm up new domains with the Warm-Up Calculator so you do not spike volume into a cold reputation, keep SPF, DKIM and DMARC clean, and watch your blacklist status. Low bounces plus strong authentication is what keeps you in the inbox.
Start cutting your bounce rate
Decode your bounces to see which addresses to remove now and which to retry.
Open the Bounce Analyzer →All free tools