Whenever someone joins a Gaggle Mail group there’s an option to send a welcome email which describes how the group works and some features of it. We have just added the ability to customise this welcome email for you group.
Since our standard welcome email is in English this is especially useful for members to your group are non-English speakers. If can also be useful you you’d like to specify rules about how your group should be ran and expected content in messages posted to it.
You can read more about this feature here.