User blog comment:Kaloneous/Mass Effect 3 Ending DLC Denied and PAX/@comment-4043223-20120317193050/@comment-4043223-20120317194425

Letters need to be short, and simple. Highlight why you are writing to them, and what you are asking for. Do not suggest ideas for a new ending other than in vague terms.
 * 1) RetakeME3 has started a letter campaign if anyone wants to join in. There's nothing like a good old fashioned letter campaign. Physical letters can often mean a lot more than digital ones. I'd like everyone who is willing and able to compose a letter to send to Bioware (just them for the moment).

BE POLITE AND COURTEOUS. If it wouldn't be in a Disney cartoon it shouldn't be in your letter. DO NOT send the letters out yet. There will be a single release date, so Bioware knows we are organized. add: #RetakeMassEffect somewhere in your letter, so they know we are all in this together. Can't send a physical letter? Email works, same rules as above. Where to send: Mailing Address:
 * BioWare Edmonton
 * 200-4445 Calgary Trail NW
 * Edmonton AB
 * Canada T6H 5R7

and you can contact BioWare via this email. Email: contact@bioware.com