blat is not available for Linux but there are a few alternatives that runs on Linux with similar functionality. The best Linux alternative is mailsend-go, which is both free and Open Source. If that doesn't suit you, our users have ranked six alternatives to blat and four of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to blat are sSMTP (Free, Open Source), sendEmail (Free, Open Source) and Mailer (Free).
mailsend-go is a command line tool to send mail via SMTP protocol. This is the golang incarnation of the C version of mailsend. However, this version is much simpler and all the heavy lifting is done by the package gomail.
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mailsend-go vs blat opinions
pros, cons and recent comments
it seems to work but doesnt raise an error for some wrong parameters
sSMTP is a simple MTA to deliver mail from a computer to a mail server. sSMTP is simple and lightweight, there are no daemons or anything hogging up CPU; Just sSMTP. Unlike Exim4, sSMTP does not receive mail, expand aliases, or manage a queue.
Free utility to send emails from the command line. No Installation. All contained in one file. MIME detection based on file extension. Multiple recipients (to/cc/bcc). SMTP SSL/TLS support. SMTP Authentication (clear). Environment variable support.