Draft e-mail for 2nd mass mailing
Subject: The OpenStreetMap Community needs your Help
You haven't been active in the OpenStreetMap project for quite a while. Because of that you may have missed that the preparations for the last phase of the re-licensing have started and that we urgently need you to accept the new contributor terms. With other words, if you do not give us explicit permission to continue using your contributions by agreeing to the new contributor terms. the community will have to remove and remap the data that you have contributed.
Even if you don't intend to actively participate in the future, it would still be important for all other mappers if you could license your data under the new terms.
Here is the official announcement http://www.osmfoundation.org/wiki/License/We_Are_Changing_The_License
You can accept the license in the profile of your OSM account or here: http://openstreetmap.org/user/terms
If you have any questions about the contributor terms and/or the ODbL, feel free to send your questions to email@example.com
The OpenStreetMap Licence Working Group