Compatible with version
This plugin uses the PEAR Net/POP3 package to emulate the php imap_xxx functions that are used by phplist for bounce processing. Some hosting providers, such as GoDaddy shared hosting, do not provide the imap extension that is needed by the phplist bounce processing.
If your php configuration already includes the imap extension then you do not need this plugin.
See the README file on the GitHub page https://github.com/bramley/phplist-plugin-imap for how to install and configure the plugin.