I am using gmail sinc 2001 .
All feature of gmail are very easy to use it.
Its best feature is you can verify any email contact .
Gmail can also use in any smartphone with same email address and also we can access feature from app also.
Its best part is we can send any image , videos and documents without any single error. But it have one problem also we cant send high MB(>10MB) File using gmail .
I think gmail need update about it .
Otherwise GMAIL is a best emailing software.
I have used yahoo also but it not like as gmail.