How to send emails to all the email accounts on the server

Introduction

In a cPanel environment, there are no native/supported ways to send bulk emails locally, so you will need to create a script or a one-line command to send emails to all the email accounts on the server. This article provides an example of a one-line command.

Please note that the example is provided as a courtesy and is not guaranteed to work for you. cPanel support cannot modify or troubleshoot this for you.

Procedure

1. Access the server's command line as the 'root' user via SSH or "Terminal" in WHM.
2. Create a new text file.

   touch /PATH/TO/FILE"

   Please note that "/PATH/TO/FILE" must be replaced with the path to the file you will create.
3. Open the file in your preferred text editor.
4. Enter the contents of the email message that you wish to send.
5. Save the changes and exit the text editor.
6. Run the following command to send the emails.

   for i in $(awk '{print $2}' /etc/trueuserdomains); do uapi --user=$i Email list_pops 2> /dev/null | egrep "\s+email:" ; done | awk -F":" '{print $2}' | while read email; do mail -s "EMAIL SUBJECT" $email < /PATH/TO/FILE ;done

   Please note that "EMAIL SUBJECT" and "/PATH/TO/FILE" must be replaced with the subject you wish to use for the email and the path to the file created above.