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| Defining Soft and Hard Bounces | ||
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A soft bounce is an email message that gets as far as the recipient’s mail server (it recognizes the address) but is bounced back undelivered before it gets to the intended recipient.
A soft bounce might occur because the recipient’s mailbox is full, the server is down or swamped with messages, the message is too large or the user has abandoned the mailbox. Most email service providers will attempt to deliver the email regularly for a few days. If it is still undelivered, it becomes a hard bounce.
A hard bounce is an email message that has been returned to the sender and is permanently undeliverable. Causes include invalid addresses (domain name doesn't exist, typos, changed address, etc.) or the email recipient's mail server has blocked your server.
Servers will also interpret bounces differently, meaning a soft bounce on one server may be classified as a hard bounce on another.
Conclusion - Soft bounces are temporary problems and do not need to be removed from your mailing lists.
Hard bounces are permanently bouncing and are better removed from your mailing list to keep it clean and effective.
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| June 30th | ||
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