Mailing List Subscription¶
There are now only one electronic mailing list to which users may subscribe. Subscription is required to reduce spam and junk:
- is a one-way street for us to notify registered users when a new version has been released. No user can post to this list. Please subscribe to this list if you ONLY want email when a new version is available.
To add yourself to this mailinglist (maintained by the listserv program), send email to the with a one-line message. E.g., if your name is John Smith then send the message
subscribe gmt-group John Smith
Listserv automatically obtains your email address. To unsubscribe, send
We expect to eventually shut down the gmt-group mailing lists as well, since messages about new releases will be posted to the user forum as well as the News section of the wiki.
Mailing List Archive¶
To browse previously posted messages to gmt-help, please visit the official GMT Mailing List.
Phone Support (not)¶
Occasionally, a frustrated new GMT user will convince him/herself that their work is of paramount importance and hence they feel justified in digging up our phone numbers and calling us directly to get personal attention to their vexing problem. Please don't even think about doing this unless you are prepared to pay our standard consulting fee of USD 400 per hour and endure insults that would make hardened C-programmers blush...