New comment by Anachron on mblaze repository

https://github.com/leahneukirchen/mblaze/issues/205#issuecomment-820916152

Comment:
I've fixed this for now with my `mfrom` script also modifying the `account default` setting in my `~/.msmtprc`.
`! test -e ~/.msmtprc || sed -i "s|account default.*|account default: ${1}|" ~/.msmtprc`

Closing this as it's not an issue with mblaze.