how to get confirmation that mail was sent correctly

[Guenter Wolpert]

Hello,

I'm using GNUS 5.9.0 for reading news and (mainly) for my e-mail.
The mail system uses a POP server that used to be a dial-up
conenction, no its a DSL router.
What I'm currently missing is a feature to
a) cause an acknowledgement when the mail was read by the recipient
b) trace the mail as it is transferred from server to server.
Both features are available in usual mail programs and I guess,
GNUS can do also.

One more thing: Receiving a lot of spam, including completely empty
mails, I wonder, whether GNUS responds to the above mentioned (a)
acknowledge feature and how I can control this.

I must admit that my printed version of the GNUS FAQ is very old
and may be out of date.
And probably, it's not GNUS, but I didn't find out which is the right
manual to read.

Thanks for any help
Guenter