Bounce Detection
Hard bounces suppress the address at once; soft bounces are counted and suppress after three in seven days; and when a workspace's bounce rate crosses 5% in 24 hours, sending pauses automatically to protect your reputation.
Automatic Bounce Classification
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Common questions, straight answers.
How does PostFrame tell a hard bounce from a soft one?
From the provider's notification: a permanent bounce is classified hard, a transient one soft, and anything else undetermined. The sub-type and diagnostic code are logged with the bounce.
When is a soft-bouncing address suppressed?
After three soft bounces to the same address within seven days. A single full-mailbox bounce does not suppress anyone.
What is the bounce-rate pause?
PostFrame checks your bounce rate over the last 24 hours against a threshold — 5% by default, adjustable per workspace. Above it, sending pauses; the check re-runs and lifts the pause when the rate recovers.
Do bounces fire a webhook?
Yes. email.bounced carries bounce_type, bounce_sub_type, diagnostic_code and the provider name alongside the email's ID, subject and tags.
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