shell scripts that uses mail/xmail

Hello,

i'm wondering is it possible to include the 'notify me' tag which s used with outlook or some web-based email clients that notify you as soon as that user read the email with mail/xmail/sendmail etc.

i'm having scripts that sends a daily email to my sysadmins and i wish to know when they opened the email wich as a daily output from cronjobs

Thank you.

If you are using mailx there is an option for ~R for return receipt BUT it's for interactive mode. Don't know if it would work on a cron job. Read the man page for mailx (or whatever you are using) and look for receipt.