how is this list being stored (DBMS, Unix DBM, flatfile, etc.)?

if it's a flat file, then it can be done quickly, same whith DBM, using a DBMS (MySQL, mSQL, Oracle, MS SQL, etc.) requires a bit more work, but is possible. (you need the perl DBI module)

Handling the form submition can be done with the CGI module (i've had trouble with it, but it's default with perl, i use the CGI::Minimal module from CPAN)

as for sending email, what OS are you on, with Unix/Linux it's a snap. WinNT requires CDO for NTS, but can be done (using ASP instead of perl, but you said perl, so thats not an option).

i need a bit more information before i can give you some code/