I miss BBS'ing, it was a lot of fun :-)
I used Fido back in the days, but just as a point. There were several BBS here in Czech. I think 4 or 5 of them were running on Atari machines. My friend had BBS called JoyBBS running on Atari MEGA STE which was also a Fido node and I used it for sending and receiving mails.
For BBS access we used Connect and for mail combination of Semper and LED. I think you can find both on Atari ftp servers.
It was great time...