User Profile: Visitor Messaging Options 
Path to User Profile: Visitor Messaging Options: Settings > Options > User Profile: Visitor Messaging Options.

You can control the visitor messaging user profile settings with the following options.
Note:
You must click Save for changes to take effect.
Maximum Characters Per Visitor Message (default: 1000)
Maximum number of characters to allow in a visitor message.

Set this to 0 for no limit.

Default Visitor Messages Per-Page (default: 10)
Specifies the default number of messages displayed per page in the user profiles.
Note:
This number must be at least 1.
Maximum Visitor Messages Per-Page (default: 10)
Limits the number of messages displayed per page in the user profiles.
Note:
This number must be at least 1.
Visitor Message Moderation (Yes/No)
When set to Yes, all new visitor messages are placed into moderation. This can also be enabled in usergroup permissions.

Allowed BB Code Tags in Visitor Messages
This option is a set of checkboxes you can use to specify which BB codes your visitors may use when composing visitor messages.

By default, Basic (B, I, U), Color, Image and Link (URL, EMAIL, THREAD, POST) tags are enabled.
Note:
Any changes you make will affect only messages posted (or edited) after you click Save.
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