Cancel your SupplyGem subscription by mail
SupplyGem deals with cancellations through the post, so the request goes in a letter and the certified-mail receipt is your proof of when. SupplyGem receives written requests in New York, United States.
Let Postbye cancel SupplyGem 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.
Money-back guarantee within 10 business days.
Postbye is not affiliated with SupplyGem.
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- 2 SupplyGem cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel SupplyGem by mail
Collect the details you need
Check the name and email on the account and, if you have one, an account or customer number before anything else. A request that does not match the account on file at SupplyGem is the easiest one to set aside.
Put the request in writing
Ask SupplyGem to cancel the account, stop all further charges and confirm in writing. Postbye prepares the letter from our English template, with the subject line “Subject: Subscription termination – SupplyGem”.
Send it by certified mail
Use certified mail for the 10017 New York address in the next section, so the post office records the delivery. Write down the tracking number.
Hold on to the receipt
File the receipt with the letter. A SupplyGem charge dated after delivery is the one to dispute, and these two documents are what you quote.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your SupplyGem cancellation letter goes
The mailing address we hold for SupplyGem is 228 E 45th St, New York, NY 10017.
With ZIP 10017, the address sits in New York and the letter never leaves the United States postal system.
The database also lists East 45th Street 228, New York 10017 for SupplyGem. Use the first address above unless your agreement names this one.
Inside, the salutation reads “To Whom It May Concern,”, followed by your details under Name, Address and E-mail.
Prefer to write it yourself? Use our letter template
Every address we hold for SupplyGem, with the envelope wording
Before you cancel SupplyGem, check these
- Use the same name and email as on the account. A mismatch can delay the request.
- Check your next statement: no charge should appear after the cancellation date.
- Look for annual or multi-month plans. A plan paid in advance usually runs to the end of the period you paid for.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel SupplyGem 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.
How cancelling by mail works
Most subscriptions keep billing until someone tells the company to stop, and a dated letter is proof that somebody did.
A letter is the formal route: it states the request in writing, carries a date and, sent by certified mail, comes with proof of delivery.
SupplyGem cancellation at a glance
- How SupplyGem accepts cancellations
- By mailed letter
- Mailing address on file
- SupplyGem 228 E 45th St New York, NY 10017
- Second address on file
- SupplyGem East 45th Street 228 New York 10017
- Country
- United States
- Letter language
- English (template en)
- Added to the database
- April 30, 2026
- Data last checked
