What is the difference between Soft and Hard Bouncebacks?

Within the email tracking area you may notice that a bounceback is labeled as a SOFT BOUNCEBACK or a HARD BOUNCEBACK. 

Hard Bounces

A hard bounce indicates a permanent reason an email cannot be delivered.  While there are many reasons an email address may hard bounce, these are some common reasons this could happen.

• Recipient email address does not exist.
• Domain name does not exist.
• Recipient email server has completely blocked delivery.

Soft Bounces

Soft bounces typically indicate a temporary delivery issue to an address.  While there are many reasons an email address may soft bounce, these are some common reasons this could happen.

• Mailbox is full (over quota).
• Recipient email server is down or offline.
• Email message is too large.