mailx

Send and receive mail. More information: https://manned.org/mailx.

• Send mail (the content should be typed after the command, and ended with <Ctrl d>):

mailx {{[-s|--subject]}} "{{subject}}" {{to_addr}}

• Send mail with content passed from another command:

echo "{{content}}" | mailx {{[-s|--subject]}} "{{subject}}" {{to_addr}}

• Send mail with content read from a file:

mailx {{[-s|--subject]}} "{{subject}}" {{to_addr}} < {{content.txt}}

• Send mail to a recipient and CC to another address:

mailx {{[-s|--subject]}} "{{subject}}" {{[-c|--cc]}} {{cc_addr}} {{to_addr}}

• Send mail specifying the sender address:

mailx {{[-s|--subject]}} "{{subject}}" {{[-r|--from-address]}} {{from_addr}} {{to_addr}}

• Send mail with an attachment:

mailx {{[-a|--attach]}} {{path/to/file}} {{[-s|--subject]}} "{{subject}}" {{to_addr}}