OK, if I understand correctly, you have a process which sends you a line of text in the body of a mail. You have Notes mail, so you must have a server somewhere.
Off the top of my head, you can do either of two things :
1) receive all mails in a mail-in database. Make an agent that extracts the first line and writes it into a different Notes document - lets call it the Results document. Create a view that lists all of these Results. When all responses have been received, export the view to a text file and open in Access.
2) Receive all responses in a mailbox. Replicate locally. Make an agent that goes over all docs and writes the body field into a text file. Open file in Access.
Actually, if you have the correct ODBC filter for Access, you can even open the mail-in from 1) directly, without writing to a file.
What do you think ? Tell me which solution you would like to employ, I'll send you some code when I know what you want to do.