How to reduce email bounce rate
Mailbox providers read your bounce rate as a measure of how much you care about your list. Practical steps to keep it under control.
Deliverability · 1 min read · updated
Why bounce rate decides your deliverability
Every hard bounce tells the receiving provider that you sent to an address you didn't verify. A few are normal; a pattern reads as a purchased or scraped list, and providers respond by routing the rest of your mail to spam — including the mail to perfectly good addresses.
Industry rule of thumb: stay under 2%. Past 5%, reputation damage compounds and takes weeks of good behaviour to unwind.
Stop bad addresses at the door
Most bounces enter through forms: typos (gmial.com), keyboard mash, and deliberately fake entries. Validate at collection — syntax, DNS and a typo suggestion at the form catches the majority for free.
Validate on import as well. Any list older than a few months has decayed — people change jobs, abandon mailboxes, and providers recycle addresses. Cleaning a list before its first campaign is the single highest-leverage deliverability move.
Retire addresses before they turn
Suppress every hard bounce immediately and permanently — a second send to a hard-bounced address is a red flag providers remember.
Watch the silent segment too: addresses that never open or click for months are the next hard bounces. Winding them down with a re-engagement pass keeps the list honest before the bounce, not after.
Check your addresses now
The free InkPigeon checker runs syntax, DNS, disposable, typo and role-account analysis on any address — instantly, no signup.