Automatically unsubscribing emails that have bounced

Emailwish automatically handles the subscription status of customers whose emails bounce.

Hard bounces:

A hard bounce occurs when an email is rejected by the receiving mail server because the recipient’s email address is invalid, disabled, inactive, or otherwise permanently unavailable.

Emailwish automatically suppresses and marks users as “hard bounced” when we receive a 5xx, permanent failure message from the delivery provider.

Soft bounce:

A soft bounce is a temporary email delivery failure. They occur when the recipient’s mail server returns that it cannot, at this time, receive emails on behalf of the recipient.

A soft bounce can occur for a number of reasons:

• The recipient’s mailbox is full,
• The receiving server is down or swamped with messages,
• The message size is too large,
• The recipient’s settings do not allow for an email from the sender,
• Suspicious or spammy content has been detected.

When an email address returns a soft bounce 10 times within a 30 day period, Emailwish automatically suppresses the customer and marks them as “hard bounced”.