I am using Mozilla Thunderbird for emails with Windows XP. How can I make the settings so that the person receiving the email has to send a reply to confirm that they have received it. At present I have to tick a box every time I send an email but I am sure there is a way for this to be permanently on, with the option if I want to change it back at some time of course. Any advice much appreciated.
This thread is now locked and can not be replied to.