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# mail
> The command operates on the user's mailbox if no argument is given.
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> To send an email the message body is built from `stdin`.
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> More information: <https://manned.org/mail>.
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- Send a typed email message. The command-line below continues after pressing Enter key. Input CC email-id (optional) press Enter key. Input message text (can be multiline). Press Ctrl-D key to complete the message text:
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`mail --subject="{{subject line}}" {{to_user@example.com}}`
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- Send an email that contains file content:
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`mail --subject="{{$HOSTNAME filename.txt}}" {{to_user@example.com}} < {{path/to/filename.txt}}`
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- Send a `tar.gz` file as an attachment:
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`tar cvzf - {{path/to/directory1 path/to/directory2}} | uuencode {{data.tar.gz}} | mail --subject="{{subject_line}}" {{to_user@example.com}}`
