Working in I.T. means that I have several email addresses or more specifically I receive email sent to me on several email addresses. When Acme Corporation asks me to build their network I create the email address acme@example.com for them to use. Everyone at Acme uses that email address to get in contact with me. When I have to talk to their prospective broadband provider I use that email address. In cases when I have control of their email system I create a generic I.T. person email address on their domain like it@acme.com and use that. When we part company I just reassign that address to one of their people and the handover is seamless. When I receive email on a particular address I would like to respond on that email address. This helps me to separate the work. I create an email address for a client, then use that address for everything I do with them. Sure, you could use your normal email address but the more your email address is used in dealing with 3rd party companies in relation to your client company, the more difficult it is to remove it when the time comes. You will find that in spite of what those 3rd party companies have said, you are registered on all sorts of mailing lists and you’ll forever be receiving sales promotions about broadband services that you are not interested in any more. When you come to parting ways the owness is on you to un-register yourself from all these lists. All email will be bounced back to the sender and you don’t have to do anything. It is far easier to just delete the email address then the owness is on the 3rd party companies to do the chasing.

1. Login to GMail’s web interface.
2. Click Settings in the top right.
3. Click the Accounts tab.
4. In the Send mail as section, click the link Add another email address you own.
5. A window will pop-up and ask you to email an email address.
6. Enter the email address you would like to send email as: it@acme.com and click Next Step.
7. To combat spam GMail must send a verification email to the address you specify to make sure you are capable of receiving email on that address.
8. So click the Send Verification button.
9. The window moves on to a screen that lets you enter a confirmation code which is in the email GMail has just sent you.
10. Depending on lots of complicated stuff the email might arrive in 1 second or it might arrive tomorrow, so I close this window down but clicking the Close window link at the bottom.
11. Check your inbox periodically and when the email arrives it will have a subject of Example Confirmation - Send Mail as it@acme.com.
12. Open up the email and click the confirmation URL embedded in the email.
13. You will be taken to a web page that confirms that you can now send email as this new user.
14. Head back into the Settings->Accounts section of GMail.
15. In the Send mail as section, make sure When replying to a message is set to Reply from the same address to which the message was sent.