Read request reply back

I recently starting using Thunderbird email program because my old Incredimail email program i have used for years is no more. Loved that program. Incredimail had a read request option that would send out with your email to recipient that would to let sender know that your email was read. Then i would get a reply back saying my email was read. I loved that because sometimes i needed to know if a person read my email or not and at what time. I can not find the same thing in Thunderbird program. Am I just not finding the option or does it not exist as an option in Thunderbird? If it does not exist as an option, how can it be added to Thunderbird or is there some kind of add-ons i can download to Thunderbird to make this work. let me know how to do this or the steps and what to do to activate it.