Where to send your Gamma cancellation letter
Read the addresses on this page next to the full guide to cancelling Gamma.
The addresses we hold
Where a cancellation letter to Gamma should be sent: the verified San Francisco address below, plus the other addresses on file, and how to write them on the envelope.
Where the letter goesMailing address
GammaMarket Street 2261San Francisco 94114The head-office address for Gamma, in San Francisco. ZIP code 94114.
How to address the envelope
Copy the address exactly
The envelope reads Market Street 2261, San Francisco 94114. Match the spacing and the box or street line exactly as printed.
Put your own address on it
Your name and postal address go top-left on the front (or the back flap). If the letter cannot be delivered it comes back to you, which is itself evidence of the attempt.
Ask for certified mail
At the counter, certified mail costs a fee on top of the postage and comes with a mailing receipt and a delivery record. The tracking number on the green label is what you follow.
Keep the records
The postmarked receipt, the tracking record and your signed copy of the letter are the set that proves the request.
Your letter to Gamma
A plain, dated letter to Gamma asking for the cancellation, the end of every charge and written confirmation. Have the account email, the plan or product name and the invoice or order number from your latest receipt to hand; our letter template fills the same shape in on screen.
[Your name] [Your street address] [City, State ZIP] [Your email address]
[Date]
Gamma Market Street 2261 San Francisco 94114
To whom it may concern,
I am cancelling my account with Gamma, account or member number [number], with effect from [date or "immediately"]. Please end every add-on and linked plan on this account at the same time.
Please stop all future charges to my payment method, remove my stored payment details, and send written confirmation of the cancellation and its effective date to [your email address].
Sincerely, [Signature] [Your printed name]
Keep reading
The full guide to cancelling this company, our letter template and the postal guides.
Let Postbye cancel Gamma for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.