New since version 2.2!
For messaging to work, you will need to have the following config setting
$wgFlexFormConfig['secure'] = true;
Name
message
Type
input
Synopsis
Send a notification to another user
Description
This is a FlexForm specific field type. It is not default HTML5.
With this field type you can send notifications to other registered users.
Parameters
type="message"
user="<username>" - This can be a comma separated list of user names to send one message to multiple users.
message="<the message that will show up in the notification>"
message-title="<notification title>" - this is optional
message-type="<either "danger", "warning", "info", "success">" - defaults to danger
Example
<input type="message" user="wiki user" message="test message" message-title="Admin message" message-type="info" />
