feature needed imap-send pass as cli switch

I tend to have my .gitconfig shared on github with a bunch of other config files and this has been ok, until submitting a patch here I needed to use imap-send, and the only way I see in the documentation is to put my email password in .gitconfig, obviously I can't push this up to my remote as I usually do. I'd like to see an option to pass the password on the cli, either as an input prompt or as just an argument to an option, or both. I think storing it in the config file is a security risk, storing passwords in plaintext is just bad practice.

if it's already possible could someone share how with me? and perhaps patch the documentation to include how.