A bounce address is a dedicated mailbox that receives delivery-failure reports for your emails. Mumara connects to it over IMAP or POP3, parses the bounce notifications, and updates contact statuses automatically — keeping your lists clean and protecting your sender reputation. You manage them under Setup → Bounce Addresses.
When you click Add New, you enter the bounce email address, choose the connection method (IMAP is recommended), and provide the server hostname, username, password, port (typically 993 for IMAP over SSL), and mailbox folder (default INBOX). You can also choose whether to validate the SSL certificate, pick SSL/TLS encryption, and enable Post-Processing Email Deletion so processed bounces are removed from the mailbox (recommended to prevent reprocessing). Always click Verify Connection before saving to confirm the server, credentials, and folder all work.
Once created, assign the bounce address to a sending node as its Return-Path. Bounces are then delivered to this mailbox, processed periodically by the system, and classified using your Bounce Rules.
Worth knowing: use a dedicated mailbox solely for bounces — not a regular inbox; Gmail and Outlook usually require an app-specific password when two-factor authentication is enabled; an inactive address or a disabled "Process bounces from the mailbox" toggle means bounces won't be processed; and the Error column on the list page flags connection problems.
