Set Gmail as Default mailto for Opera Browser
The new Opera 10.51 was recently released with speed improvements. Opera is a quite well known free web browser but it takes the 4th place after Firefox, Internet Explorer and Chrome. Opera web browser supports built-in mailto protocol to use which email client. For example when you click on the mailto hyperlink, an E-mail Client Selection window will open with 3 selections asking you if you want to use system default, create opera mail account or use a web mail service. Selecting the web mail service lets you select Yandex, Fastmail, Opera Web Mail or Mail.ru.
You can’t find Gmail in the list but here is how you can easily add Gmail to the e-mail client selection list in Opera. First make sure that Opera is closed and then go to the folder where Opera is installed. Normally it is installed in C:\Program Files\Opera\. There is a folder by the name of default in the Opera directory. Enter the default folder and double click the webmailproviders.ini file to open with your text editor. You should see Yandex, Fastmail, Opera Web Mail and Mail.ru ID, URL and ICON. To add Gmail to the list, copy and paste the information below and paste it to the end of the file and save it.
Now run Opera, press Ctrl+F12 to open the Preferences window. Go to the Advanced tab and then click Programs on the left pane. At the right pane, you will see a mailto Protocol. Double click on it, select Use a Web mail service and select Gmail from the list. From now onwards, whenever you click on a mailto link, it will open Gmail from your Opera.