Email bounce rate calculator

Calculate hard and soft bounce rates to understand list quality and protect your deliverability.

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Bounce rate / inputbouncesfig.

Emails sent

Hard bouncesSoft bounces

Bounce rate / resultratefig.

1.80%

Total bounce rate

Hard 1.20% · Soft 0.60%

Excellent

Keep bounces under 2% to protect sender reputation.

Tier	Bounce rate	What it means
Excellent← YOU	≤ 2%	Healthy, well-verified list.
Good	2–5%	Acceptable — keep verifying.
Warning	5–10%	List hygiene is slipping; clean it.
Critical	> 10%	Reputation risk — stop and verify now.

Benchmarks

Bounces are a reputation tax

Hard bounces

Permanent failures — the address doesn't exist. These hurt reputation most; keep them near zero by verifying lists.

Soft bounces

Temporary issues like a full mailbox or server timeout. Occasional soft bounces are normal; persistent ones aren't.

Stay under 2%

Mailbox providers watch bounce rate closely. Above 2% signals a dirty list and throttles your delivery.

FAQ4 entries

Bounce Rate Calculator — FAQ

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Bounce rate = ((hard + soft bounces) ÷ emails sent) × 100. We also break out hard and soft rates separately.

Under 2% is healthy. 2–5% is acceptable, 5–10% is a warning, and above 10% puts your sender reputation at serious risk.

Verify every address before sending, remove old contacts, use double opt-in where possible, and keep authentication (SPF/DKIM/DMARC) in order.

Yes. High bounce rates tell mailbox providers your list is poor, which lowers inbox placement for everyone on your domain.

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