Hard Bounce vs Soft Bounce

Hard Bounce vs Soft Bounce

Posted by Fragartra on 2018-03-13
The Definition of an Email Bounce

An email bounce signifies non-delivery of your email message. When this happens, the mailer will receive an automatic notification of the delivery failure. This failure originates from the recipient’s mail server for a number of reasons (explained below).

Contents of a Bounce Message

Usually the bounce message will give you important information to help you identify the reason for the email delivery failure. This includes the following:

The time and date the message bounced The mail server that bounced it Soft Bounce (Block) vs. Hard Bounce A soft bounce means that the email address was valid and the email message reached the recipient’s mail server. However, it bounced back because:
  • The mailbox was full (the user is over their quota)
  • The server was down
  • The message was too large for the recipient’s inbox
A hard bounce occurs when the message has been permanently rejected either because:
  • The email address is invalid
  • The email addresses doesn’t exist