silverstripe/silverstripe-userforms — pull request #219 by Liongold (2014-06-26 16:32:39+00:00)
Title: Implementing Dynamic Email Subject

This is a feature which has been asked by one of the localization teams of The Document Foundation. This feature adds another field to the Form page to choose a field which should have its value be set as the Email Subject of the submission email. A big thanks to Christian Lohmaier who guided me while doing this patch.