yes
I've tried it many times to send it on gmail and nevere received an activation mail.
You can send a message via the Hangouts. Hangouts is the Instant Messaging service of Gmail. It allows sending instant messages which can be received over phones too.
To reply to a received mail, for Gmail, simply click on the reply and forward link below the mail.
You can send mail from gmail to other email id the same way as you do it for gmail IDs.
You need to have the email ID of the recipient. You can write all the details about using Gmail. Then you can click send to send the mail.
You cannot send SMS through Gmail Mobile. There are other ways to show a notification. It is the hangouts that can be used for that.
select compose mail on the left(it is in a rectangular box)
You cannot send an SMS using Gmail. Gmail is for sending mails and chats. You can however send a mail to the person in their mailbox.
You have to compose a mail to send. It is on top right corner of the page. Then you write your mail and send it.
Gmail can send mails to yahoo easily. They can communicate within each other's servers. The mails can be received and sent from both sides.
You can send the e-mail to each individual person. Or there might be a setting on the e-mail. It really depends on which service you use. (AOL, Gmail, Yahoo)
You can write a mail to a person on hotmail. You can send the person mail from Gmail to hotmail easily. Gmail supports this kind of sending mails.