Configuring Evolution for Gmail account

Select
Edit->Preferences->Mail Account->Add New Account

In Identity Tab give necessary details like mail id,name etc

In Receiving Email Tab
Server Type : POP
Server : pop.gmail.com
Username : username of gmail
Security : SSL encryption (Select from drop down list)
Authentication type : Password (select from drop down list) check for supported types

In Sending Email Tab
Server Type : SMTP
Server : smtp.gmail.com (Tick the Server requires authentication radio button)
Use Secure Connection : SSL Encryption
Authentication : PLAIN(Select from dropdown menu) check for supported types
Username : username of gmail

Click OK,...thats it