Hi, Michael Slusarz.

The client developers claim that in practice this approach leads to various problems for users.

In one case, the square lines may be treated as a syntax element, and in others as part of the folder name. Predicting what is what is extremely difficult.

How can i modify source code in my mail server to force the use of quotes?

Michael Slusarz писал(а) 2025-03-07 08:33:

Given the mailbox 'Trash', it's fine for a server to send it back either with or without double quotes (see the RFC 3501 ABNF).

Thus, either of these are allowable under the standard:

S: * LSUB () "/" "Trash" S: * LSUB () "/" Trash

Apparently your client is not handling the non-quoted alternative correctly (the 2nd example). So this is a client bug, at least if the client is claiming to be IMAP4rev1 compliant.

michael

-- Best regards, Lafiel mailto:lafiel@elven.pw