In this video from flytenewmedia we learn how to send from separate email addresses using Gmail. This is great for small businesses. To make it look like you are sending it from your other email address, and not Gmail, follow these steps. Click on Settings then click accounts. You need to add another email address that you own. Click on next step. Now Gmail will send a verification. click on the inbox and click the link within the gmail that you just received. Now it will say confirmation success! Now take a look back into your settings and accounts. You will see your email address available. Now make that the default email address. Now when you compose a new email you will see it will be from that other address.