Email Bounces
When an email cannot be delivered, the receiving mail server generates an SMTP non-delivery report (bounce).Types of Bounces
- Hard Bounce: Permanent delivery failure (e.g. email address does not exist, domain is invalid). Mailofly immediately suppresses the recipient to protect your domain reputation.
- Soft Bounce: Temporary delivery failure (e.g. recipient mailbox is full, server timeout, message temporarily deferred). Mailofly automatically retries delivery with exponential backoff for up to 72 hours.
Bounce Webhook Events
Subscribe toemail.bounced webhooks to automatically mark inactive users in your application database.