It can read any Yahoo .dat log files, even without being online, being logged in the yahoo account, or even without knowing the password. It is also possible to secretly turn on the message archiving for every yahoo account on the computer.
The program can be useful to help you find messages much faster, by featuring a powerful search function, enabling you to search your entire message archive or just through some conversations.
With just a few clicks, you can save your entire Yahoo Messenger log archive to HTML or plain text, in one big file or each conversation in its own file.
It has a "favorites" feature, making retrieval of your most important messages much faster, especially if you happen to have an archive of thousands of conversations.
And, best of all, Dapyx Yahoo Message Archive Reader is freeware, so it can be used completely free of charge.