msmtp:tldr:44299

msmtp: Send an email using the default account configured in `~/.msmtprc`.

echo

$ echo "${Hello world}" | msmtp ${to@example-org}

try on your machine

This command uses the echo command to display the text "Hello world" and then pipes it (|) to the msmtp command.

${Hello world} is a variable placeholder, but it is incorrectly used here as Hello world should be a string without any variable placeholder. Assuming you meant to display the text "Hello world", the command should be echo "Hello world" | msmtp ${to@example-org}.

echo "Hello world" simply prints the text "Hello world" to the command line.

The | symbol is called a pipe and it allows the output of one command to be passed as input to another command. In this case, the output of the echo command is passed as input to the msmtp command.

${to@example-org} is another variable placeholder that should be replaced with the actual email address or recipient. Again, assuming you meant to use a valid email address, you should replace ${to@example-org} with the actual recipient's email address.

The msmtp command is a command-line SMTP client used to send emails. It takes the input from the echo command (in this case, "Hello world") and sends it as an email to the specified recipient.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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