Adium plug-in ensures no missed IMs. Free to download.
It's easy to use, too – simply input "/nims" to activate or deactivate the numbering feature for the person you're currently chatting with. If you're starting a new chat, simply type "/nimsdef" to set it up for future conversations. The Numbered IMs plug-in is a must-have for anyone who wants to optimize their chat experience, and never miss a message again. So why wait? Download NIMS today and start staying on top of your conversations!
Version 1.5: N/A