Change the “From:” address in Unix “mail”

Question

Sending a message from the Unix command line using mail TO_ADDR results in an email from $USER@$HOSTNAME. Is there a way to change the \"From:\" ad

Answer 1

None of the above solutions are working for me...

#!/bin/bash

# Message
echo "My message" > message.txt

# Mail
subject="Test"
mail_header="From: John Smith "
recipients="recipient@example.com"

#######################################################################
cat message.txt | mail -s "$subject" -a "$mail_header" -t "$recipients"