Google-apps – How to grant access to everyone in domain to send e-mail on behalf of a particular account in Google Apps

Apparently, you must add it as a Send As email on the account where the alias is defined. This must be done even if you are going to use a separate account to email from this address. This is exactly the same behavior as sending from a plus address.

For the authentication, you should use:

• Email: Your alias (e.g. alias@example.com)
• Username: Your email address (e.g. user@example.com). Note: this is different from using a plus address in that you cannot use the alias as the username, you must use the real email address.
• Password: Your email address' password

Being an avid user of Gmail and Google Apps myself, I know that it's not as simple as it seems, there's a few steps involved.

You have to redirect all of your work emails to your personal one, verify that you own your personal email, verify (again) that you own your work email so you can send mail through that address and setup a filter so that things don't go into super confusion mode. Long!

Thankfully for you, I'll tell you exactly how you can acomplish this! I'm so nice.

Follow these steps:

1. Login to your work email account

2. Go to Settings on the top-right corner of your screen and select Forwarding and POP/IMAP -> Add a forwarding address

3. Enter your personal email, along with a tag, such as: username+business@gmail.com where business would be the tag that you associate your work emails to (although this can be anything, make it easy to tell what it is)

4. Login to your personal Gmail account

5. Go to Settings -> Filters -> Create a new filter

6. In the To: field, put the address you chose for forwarding your business mail to (in my example, username+business@gmail.com and, on the next step, choose to apply a new label (called Business for example)

7. Still in Settings, go to the Accounts tab and Add another email address you own

8. Put in your business email (lets say username@company.com and also specify the same address as the reply-to address and you can choose to use either SMTP server (I usually don't bother)

9. Accept both authorizations sent to either emails and you're done!

When mail arrives at your work box, it will be redirected to your personal box but with whatever label you chose (in the example, Business). Makes it much simpler to organize your mail in a way that won't consume your time searching for it.

Hope this helps!