I have previously posted information on some new template messages that use the {{Mbox}} template as a base.

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The purpose of these pre-defined templates is to provide consistency in messaging to our users. However there are certainly instances where we need something different to be said or provided to users. For this reason the Mbox template can be used directly to provide almost any kind of message or links inside a box. Other additional templates created using the Mbox template in the future can be found in this category list.

Go to the Mbox template link above to see all the documentation on how to use it. If you think there is a message that might be used in other cases, please send a note back to this thread and we can consider building a common message template (like the ones above) for everyone to be able to use it in similar situations.

The simplest Mbox uses could look like:
See the {{Mbox}} template page for a detailed list of "types" and the associated icons that go with them.