feat(send): select msmtp account based on from header#13

mattmart3 wants to merge 1 commit intoyousefakbar:mainyousefakbar/notmuch.nvim:mainfrom

mattmart3:mattmart3/msmtp-read-envelop-frommattmart3/notmuch.nvim:mattmart3/msmtp-read-envelop-fromCopy head branch name to clipboard