Every modern BBS program today allows this except for client-server systems such as TBBS and Major BBS.
Wildcat version 4.1Click here for FidoNet mailers
Wildcat 5 (aka WINS)
TAG
PC Board 15.2, setup using Class 1 modems
PC Board 15.2, setup using Class 2 modems
PC Board 15.2, setup using Class 2.0 modems
Maximus/2 (OS/2 version)
Renegade 5-31-94 overlay
Remote Access 2.xx
TriBBS 5.11
AdeptXBBS/2, Class 1 modems
AdeptXBBS/2, Class 2.0 modems
Waffle, setup using Class 2 modem
WWIV 4.23, patch to C source code
VBBS, setup using Class 2
GT Power 18.00
EZYCOM 1.02
Click here to view the READ.ME file