There is a mailing list devoted to GNU Pascal. You can write to the mailing list, e.g. if you have problems installing GPC or if you found a problem with GPC (please see Reporting Bugs). You can also use it to discuss suggestions for improving GPC and, most welcome, to offer your help or contribute code, documentation or other work. Mails to the list should be in English.
To subscribe to the mailing list, send the command
subscribe gpc firstname.lastname@example.org
in the body of a mail to email@example.com (not to firstname.lastname@example.org!). The subject is ignored. (Please replace email@example.com with your real email address.) For more info, send a line help to firstname.lastname@example.org.
After subscribing, you can send a message to the mailing list by sending email to the list address email@example.com as if it were a person.
To leave the mailing list, send the command
unsubscribe gpc firstname.lastname@example.org
You can reach a human moderator at email@example.com.
There is a separate mailing list for discussions about GPC documentation, firstname.lastname@example.org. To subscribe, send the command
subscribe gpc-doc email@example.com
There is also a (low-traffic) announce list, firstname.lastname@example.org that you can subscribe to stay up-to-date. To subscribe to the list, write an email with
subscribe gpc-announce email@example.com
in the body to firstname.lastname@example.org. If you like to announce a contribution, a service or an event related to GPC, you are invited to post to this list rather than email@example.com, but please don't use the announce list for questions or discussions. Please note that all mail sent to the announce list is forwarded to the regular list, so you won't have to subscribe to both lists if you don't want to miss anything. For the same reason, please don't cross-post to both lists.
There is also a German speaking mailing list, firstname.lastname@example.org. To subscribe send the command
subscribe gpc-de email@example.com
in the body of a mail to firstname.lastname@example.org (note the hints above).