msmtp

SMTP client with sendmail compatible interface.

Runs as msmtp, msmtpd|macOS, Linux, Windows|marlam.de

Open form in Otty otty.toml

Command form

ai-draft · 2 tasks · 8 fields

Send a message read from standard input through an SMTP account. TLS tuning, logging and queue modes are left out.

Opens the form; the finished command lands at your prompt, unrun

Run in Otty

otty gui msmtp

Send mailExample values, fixed in this page — nothing here reaches a terminal

Basic

Account*

string

Envelope from

string

Recipients

string

Read recipients from headers

--read-recipients

TasksEach one presets the form for one job

Send mail

accountfromrecipientsread_recipients

Inspect SMTP server

accountserverinfofile

ParametersOnly these flags are editable in the form

Recipients

string · positional 0 · repeatable

Account

string

--account-a

Envelope from

string

--from-f

Read recipients from headers

boolean

--read-recipients-t

Config file

path

--file-C

Pretend (print settings only)

boolean

--pretend-P

Debug output

boolean

--debug-d

Show server info

boolean

--serverinfo-S

SourcesEvery flag above is checked against these

manual

msmtp [option...] [--] recipient... msmtp [option...] -t [--] [recipient...] msmtp [option...] --serverinfo -P, --pretend -v, -d, --debug -S, --serverinfo -C, --file=filename -a, --account=account_name --host=hostname --port=number --tls[=(on|off)] -f, --from=address -t, --read-recipients --read-envelope-from

manualman page 2026-10

marlam.de

Before it fills your prompt, Otty checks the installed msmtp against its version. A form that does not match your version is not offered.