Cellular is an instant messenger mod (for only whispers) based on the functionality of an old version of ForgottenChat.

Features:

Many appearance options
History log
A way to copy text
Reuse of the default chat editbox
Whispers shown in separate windows or a tab-based single window
Should work with most spam filter mods
...and other basic IM features

How to Use:

"/cellular", check Interface Options->AddOns, or right-click a window for options
Left-click a window to toggle the editbox
Left-click a tab to activate it
Shift-left-click and drag a window to move
Shift-left-click and drag bottom-right corner to resize
Right-click a tab for show/close/options dropdown
Middle-click a tab to close
Hold ctrl and close any window/tab to quick remove from history
Several convenient buttons (some require shift clicking for confirmation reasons)

Note: if you have history enabled and notice that Cellular is using a lot of memory, you should cleanup your history entries using Cellular's history options. Furthermore, if you cherish your history, you can back up the saved variables file and then delete it. You can view it in any text editor later. The location of the saved variables file is here:
...\WTF\Account\<Account Name>\<Server Name>\<Character Name>\SavedVariables\Cellular.lua

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