Help me I've made a terrible mistake

I think this is the most related community I can find, so forgive if it's
not.

I made a mistake. I have a form in a web site thet sends mail to an e.mail
account but now I need to use the data in the form fields to make a
database. Now I have 2000 messages but I don't know how to convert them al
in database registers or if there is an utilityor program to do that.

I know that in further cases I wnee to use a database, but the problem now
is with the e-mails I get on my Live Mail folder

Thanks in advance for any advise