This message can appear when trying to Create a New Local GroupMail Group.
Solution for “You must include at least one Date Field within the Group”
On the Group Structure Field, there are two mandatory Fields.
Email and a Date Field with the Type Set to ‘Date’.
All other Fields such as First Name, Last Name etc.. are optional.
That’s all there is to it.
If you continue to have problems after following these instructions, please contact the GroupMail support team. They will be happy to help.