Cancel your Substack subscription by mail
Directly with Substack, the way to cancel is: Online (Manage subscription page). Notice rule: Paid access continues to the end of the billing period; no further charges.
Let Postbye cancel Substack 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 Substack.
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- 2 Substack cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Substack by mail
Collect the details you need
You will need the email on the account, the delivery address for print copies and the subscription or reference number from your latest invoice. Use exactly the details Substack holds, so the request can be matched to your account.
Set out the request
State plainly that you want the Substack account cancelled, further charges stopped and a written confirmation sent to you. Postbye sets this out in a ready English template (“Subject: Subscription termination – Substack”).
Mail it with tracking
Use certified mail for the 94104 San Francisco, address in the next section, so the post office records the delivery. Write down the tracking number.
Keep proof the letter arrived
Delivery confirmation is your evidence that Substack was asked. Watch the next statement or two for any further Substack charge.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Substack cancellation letter goes
The mailing address we hold for Substack is 111 Sutter Street, 7th Floor, San Francisco,, CA 94104.
Put ZIP 94104 on the envelope: San Francisco, is in California, and a domestic certified letter is all it takes.
The letter greets the reader with “To Whom It May Concern,”; your own details sit under the labels Name, Address and E-mail.
Prefer to write it yourself? Use our letter template
Every address we hold for Substack, with the envelope wording
Before you cancel Substack, check these
Notice period: Paid access continues to the end of the billing period; no further charges. Work out your cancellation deadline.
- Cancel per publication on substack.com/account manage subscription; unsubscribing from emails does not stop billing
- A pause option is offered on the cancel page
- App-subscribed users cancel through Apple
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Substack 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.
Cancelling a news or magazine subscription
Publishers often move you from an introductory price to the standard rate and can steer cancellations towards phone or chat, so a written request is the record that you asked.
If a charge shows up after you cancelled, the letter and its receipt are what you put in front of the company or your bank.
Substack lets you cancel directly (online (Manage subscription page)). A letter is the fallback that leaves a dated record when the direct route fails.
Substack cancellation at a glance
- How Substack accepts cancellations
- Online (Manage subscription page)
- Mailing address on file
- Substack 111 Sutter Street 7th Floor San Francisco,, CA 94104
- Country
- United States
- Letter language
- English (template en)
- Category
- News & magazines
- Checked against
- Verified on
