The Mutt E-Mail Client : Reference : Configuration variables : envelope_from
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## 6.3.43. envelope_from

Type: boolean
Default: no

When set, mutt will try to derive the message's envelope sender from the "From:" header. Note that this information is passed to sendmail command using the "-f" command line switch, so don't set this option if you are using that switch in sendmail yourself, or if the sendmail on your machine doesn't support that command line switch.

The Mutt E-Mail Client : Reference : Configuration variables : envelope_from
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