On 07/09/2024 6:42 AM MDT Bjoern Franke via dovecot dovecot@dovecot.org wrote:

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I tested teh git version of dovecot. It seems the IMAP Compress plugin (imap_zlib) has disappeared.

https://github.com/dovecot/core/commit/5f27e25c64555dcaae6cb00c479cd05bc2638...

so the zlib plugin is also deprecated and clients should run compress themselves?

These are two distinct plugins.

imap-zlib = compression of the IMAP protocol stream zlib = mailbox storage compression on the Dovecot server

For 2.4, "zlib" plugin has been renamed to "mail-compress". https://doc.dovecot.org/2.4/core/plugins/mail_compress.html

michael