msmtp
Lightweight SMTP client for sending mail
msmtp is a small SMTP client that acts as an SMTP relay for command-line tools and mail user agents, forwarding messages to a real mail server. It supports TLS, authentication, and multiple account profiles.
Key features
- SMTP relay client
- TLS and authentication
- Multiple account profiles
- Sendmail-compatible mode
Strengths
- Released under the GPL-3.0 license
- Easy to set up — beginner-friendly
- Written in C
- Tiny footprint — runs in 32 MB RAM
msmtp replaces
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