Msmtp

msmtp Plugin

SMTP client for sending email via any SMTP server. Works with Gmail, Outlook, and any SMTP provider.

Prerequisites

Requires SMTP configuration in ~/.msmtprc:

defaults
  auth on
  tls on
  tls_trust_file /etc/ssl/cert.pem

account default
  host smtp.gmail.com
  port 587
  from your@gmail.com
  user your@gmail.com
  password APP_PASSWORD

chmod 600 ~/.msmtprc

Commands

Send

• msmtp message send -f from@x.com to@x.com — Send email (body from stdin)
• msmtp message send -f from@x.com -t — Extract recipients from headers

Server Info

• msmtp server info — Print SMTP server information
• msmtp server info --host smtp.example.com --port 587 --tls starttls — Check any server

Config

• msmtp config check — Print effective configuration

Full Access

• msmtp _ _ — Passthrough for any msmtp command

Usage Examples

• "Send an email notification to admin@example.com"
• "Send a status report email"
• "Check if my SMTP server is configured correctly"
• "Send an email with subject 'Deploy complete' and body 'All services running'"

Installation

brew install msmtp

Then configure ~/.msmtprc (see prerequisites above).

Key Features

• Any SMTP provider: Works with Gmail, Outlook, Postfix, SendGrid, any SMTP server
• Sendmail compatible: Drop-in replacement for /usr/sbin/sendmail
• Multiple accounts: Configure multiple SMTP accounts and switch with -a
• Secure: TLS/SSL support, password from gpg/keychain
• Zero platform dependency: Pure SMTP — works with any email provider