Cancel your Superhuman subscription by mail
To end a Superhuman subscription you write to them: Superhuman handles cancellations by post. Our database has Superhuman's mailing address in San Francisco, United States.
Let Postbye cancel Superhuman 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 Superhuman.
- 4.8 from 2,931 reviews
- 2 Superhuman cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Superhuman by mail
Get your account details together
You will need the account email, the plan or product name and the invoice or order number from your latest receipt. Use exactly the details Superhuman holds, so the request can be matched to your account.
Draft the request
The letter asks Superhuman to end the account, stop every future charge and confirm it in writing, under the subject line “Subject: Subscription termination – Superhuman”. Postbye fills it in from our English template.
Send it by certified mail
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 the delivery receipt
Keep the tracking record with your copy of the letter. If Superhuman bills you after the date it received the request, you have the dates to point to.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Superhuman cancellation letter goes
The mailing address we hold for Superhuman is 548 Market St, Suite 39105, San Francisco, CA 94104.
San Francisco, California 94104 is a United States address, so ordinary certified mail reaches it.
The letter is addressed “To Whom It May Concern,” and its details block uses the labels Name, Address and E-mail.
Prefer to write it yourself? Use our letter template
Every address we hold for Superhuman, with the envelope wording
Before you cancel Superhuman, check these
- Export or download your data first. Access often ends on the cancellation date.
- Annual plans can charge a cancellation fee or continue to the end of the term. Check the term on your invoice.
- Apps billed by an app store are cancelled in that store. Check which party appears on your statement.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Superhuman 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 software or app subscription
Software plans are billed per plan or per seat, often yearly, and the app store version is billed by the store rather than the developer, so the request has to name the plan and who bills it.
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.
Superhuman cancellation at a glance
- How Superhuman accepts cancellations
- By mailed letter
- Mailing address on file
- Superhuman 548 Market St Suite 39105 San Francisco, CA 94104
- Country
- United States
- Letter language
- English (template en)
- Category (from the company name)
- Software & apps
- Added to the database
- April 30, 2026
- Data last checked
