Display A Welcome Message To Your New Users In Microsoft Exchange Server 2010 Outlook Web App.
This article will show you how to create a popup welcome message for first-time users of Microsoft Outlook Web Access for Exchange 2010. It makes use of the fact that OWA shows a language selection page the first time a user logs in, and this is where you will make the changes.
First, locate the languageselection.aspx file in C:\Program Files\Microsoft\Exchange Server\v14\ClientAccess\Owa. Make a backup copy, then open it in Notepad. About 14 lines down, you will see a line like this:
Immediately after it, insert a line containing your message, like this:
alert("Welcome to your first OWA session!");
Now when your users first log into OWA, they should see something like this:
As with most of these type of modifications, you will need to check that they still function after each product update. Sometimes your modified file will be replaced by a new one from the update.