ICloud – Can mac receive messages when iCloud keeps asking for password

You can run set -x to make zsh print a trace of every command it executes. When a command is executed by a function, the function name is printed. Run set +x to stop printing traces.

If something is happening when you use the cd command, it can be because this is an alias or function. Check with type cd.

Zsh has a built-in feature to hook onto the cd command, so wrappers around the built-in command are rarely used. If the function chpwd exists, zsh runs it immediately after changing the directory. Check what the chpwd function does with which chpwd.

There are also hooks that run before and after every command: the preexec and precmd functions. Furthermore, all these hooks have an array version, which is an array of function names. Check these arrays with echo $chpwd_functions, and if there is a function, look at its code.

If you have several devices accessing your Google account via IMAP you can reach the limit of connections Google permits. The limit is 15 connections per account, however, bear in mind that each client can open multiple connections. In my experience the limit is easily reached with 3 devices. I have read that the Thunderbird email client has a setting to specify how many connections it can open, Mail and Outlook do not have this option.

Your Mail client should prompt you with a message along the lines of "Too many simultaneous connections." However I believe on iOS devices and Apple Mail you may see a more generic error.

The workaround for this issue is to log in to the GMail web interface, scroll to the bottom of the page and click the 'Details' link. From the popup window click 'Sign out all other sessions'

support.google.com/mail/answer/97150?hl=en