What’s the difference between hard and soft bounces?

Mail Marketer categorizes your campaign's bounces into 2 types:

 

1) Soft Bounce: Soft bounces basically mean the email was sent to the server, processed, but for some reason was returned to us. Common reasons include: "user over quota," and "server temporarily unavailable."

2) Hard Bounce: A hard bounce basically means we sent your email, and the recipient's server outright rejected it. Common reasons include: "Invalid Address", "Account does not exist," and "domain does not exist."

 

Mail Marketer process bounce contacts automatically
We'll process bounce backs from your list automatically and update the status of the contacts as Bounced. You won't have to do a thing. Please note by default your future campaign will not send to Hard Bounce addresses. If a soft bounce is noted for a single campaign we have attempted to send the email at regular intervals for up to 3 days. (We do what we can to help it try to get through, but we don't want you to look like an automated spambot either, so this helps keep a healthy balance.) If we get a soft bounce reported we will record that as 1 bounce. After 3 of these soft bounce reports we will update as Hard bounce.