For Example – If your address is abc@gmail.com and you also use xyz@yahoo.com then, without opening xyz@yahoo.com you can send a mail from xyz address. Follow these steps to send mails from different addresses –
Go to Accounts and Imports tab from Gmail settings page.
Click on ‘Send mail from another address’ button found user Send mail as section.
Follow the Gmail’s instruction and you are done. You can also choose the address on which the replies will be sent. After confirming the email, you will now find drop down in ‘From’ address displaying the other addresses. Now send mail from whichever account you want. It’s a useful time saving method, as you do not have to open other accounts just to mail from them. You can also fetch your mails from that address. See Transfer Emails Between Gmail Accounts Note – In case you are wondering which Gmail theme I have used for these screenshots? The answer is the new clean minimalistic preview themes from Gmail team.
