Every time I remove a name from a Mailbox, all the emails have disappeared

Gambas1947 wrote:

Every time I remove a name from a Mailbox in Rules preferences, then return to the mailbox all the emails have disappeared.

see if there is anything here to help Rules:

Change Add Rule settings in Mail on Mac - Apple Support

Change Rule settings in Mail on Mac - Apple Support

Filter emails in Mail on Mac - Apple Support

Filter emails in Mail on Mac - Apple Support

Use rules to manage emails you receive in Mail on Mac ...

Use rules to manage emails you receive in Mail on Mac - Apple Support