Fix for mailto links open with Lotus Notes or Microsoft Outlook

1) Open regedit.exe

2) Navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\mailto\UserChoice

3) Double click on Progid.Change it to :

LotusNotes.URL.mailto

On clicking mailto: links Lotus Notes will now open them automatically.

3) If you want the links to open in Outlook, do step 2 and put the below value:
                                           
Microsoft Outlook.Url.Mailto

Some example of mailto: links :

mailto:fahad@test.com

mailto:fahad@test.com?subject=that was cool