Cancel your Captainu subscription by mail
Captainu takes cancellation requests by mailed letter, so a dated certified-mail letter is the record that counts. The cancellation address on file for Captainu is in Denver, United States.
Let Postbye cancel Captainu 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 Captainu.
- 4.8 from 2,931 reviews
- 3 Captainu cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Captainu by mail
Start with your account details
Before writing, collect the name and email on the account and, if you have one, an account or customer number. Captainu can only act on a request it can match to an account.
Set out the request
Your Postbye letter to Captainu asks for three things: the account closed, no further charges and a written confirmation, all under “Subject: Subscription termination – Captainu”. It comes from our English template.
Post it with proof of delivery
Take the letter to the post office and ask for certified delivery to 80210 Denver. Keep the tracking number it gives you.
Keep proof the letter arrived
The receipt dates your request. Look at your next statement for any Captainu charge after that date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Captainu cancellation letter goes
The mailing address we hold for Captainu is 3800 Buchtel Blvd, Denver, CO 80210.
Denver, Colorado 80210 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 Captainu, with the envelope wording
Before you cancel Captainu, check these
- Write well before the next billing date. A request that arrives after it can leave one more charge on your statement.
- If an app store or phone carrier bills you, the company cannot cancel it. Cancel with that partner as well.
- Cancelling usually ends access at the end of the period you paid for, so you keep what you paid for until then.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Captainu 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 mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
Captainu cancellation at a glance
- How Captainu accepts cancellations
- By mailed letter
- Mailing address on file
- Captainu 3800 Buchtel Blvd Denver, CO 80210
- Country
- United States
- Letter language
- English (template en)
- Added to the database
- April 30, 2026
- Data last checked
