I currently have a gmail account and a bunch of my friends also have gmail. Pretty much when ever I am on gmail at least one of my friends is on gmail. Hope this helps!
female friends
You can send chat request to your friends on GMail if you know their email address.
Gmail is an account of Google where you manage your mails. It can also used for chatting with google friends. The Gmail account is a place for mailing services.
gmail or facebook
My friends all love Gmail and say it has made their lives much more efficient. Where can I find out more about Gmail, and maybe sign up?
You can add or delete contacts from Gmail easily. The contacts could be added by requesting. They can be deleted by the delete option.
Gmail is made for conversing and keeping in touch. You can send mails to your friends and family. The mails could be strictly professional or personal.
Chatting on Gmail is done through their IM. The name of IM of Google is Google Hangouts. It can be used for chatting to friends or groups.
Chatting on Gmail can be done via Hangouts. Hangouts is a way of one to one chatting. Earlier is was known as Google Now.
Circles are not present in Gmail but in Google plus. It is the social network provided by Google. Google+ has friends in your circles.
Gmail account is a thing of daily life now. You can check your mails on the go. You can also manage mails and send chats to friends.