message-subscribed-regexps

message-subscribed-regexps is a variable defined in `message.el'.
Its value is

nil

Documentation:
*Specifies a list of addresses the user is subscribed to.
If nil, do not use any predefined list subscriptions. This list of
regular expressions can be used in conjunction with
`message-subscribed-address-functions' and `message-subscribed-addresses'.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 22.1 of Emacs.