Part of the WM-HU editor retention project. For discussion, use the survey planning page.
Templates are under CC-BY-SA 3.0. Code is under MIT.
Command to run from Toolserver (after you have configured your account):
python3 /data/project/shared/pywikibot/core/pwb.py /home/tgr/editor-retention-surveys/send-survey.py test.userlist active-email.tmpl active-wiki.tmpl -putthrottle:1