What is an Email bounce?
An email bounce signifies non-delivery of your email messages. When this happens, the sender will receive automatic notification of the delivery failure. This failure typically originates from the recipient’s mail server for the reasons listed below:
- Soft Bounces (Block)
- Hard Bounces
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 of the following reasons:
- The mailbox was full (the user is over their quota)
- The server was down
- Temporary rate-limited/blocked
The Maropost platform is designed to continuously send these messages for up to 72 hours until the message is delivered. If a message is continuously deferred for 72 hours, the platform will then add the affected addresses to soft bounce list
For bounces that are a result of a recipient’s mailbox being full, the platform will add the affected address to the Do Not Mail (DNM) list for any messages that are continuously deferred for 72 hours; even after 3 consecutive mailings.
A hard bounce occurs when the message has been permanently rejected because:
- The email address is invalid
- The email addresses don’t exist
The Maropost platform is designed to add hard-bounced email addresses to the account’s global DNM list to avoid any deliverability risks from sending to these email addresses again. What this means is that even if you send a message through us for that user, the platform will automatically exclude the user’s email address when campaigns are being sent out due to the fact that the platform now recognizes the address is no longer considered a “good” address. Continuing to try to send to a known bad address will harm your reputation with the receiver, which is why Maropost’s platform will prevent that.