Cancel your Sleep Whale subscription by mail
For Sleep Whale the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. The cancellation address on file for Sleep Whale is in Redding, United States.
Let Postbye cancel Sleep Whale 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 Sleep Whale.
- 4.8 from 2,931 reviews
- 2 Sleep Whale cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Sleep Whale by mail
Find your account details
Before writing, collect the name and email on the account and, if you have one, an account or customer number. Sleep Whale can only act on a request it can match to an account.
Set out the request
Ask Sleep Whale 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 – Sleep Whale”.
Post the letter
Send it certified to Redding, United States, copying the address from the next section letter for letter, and keep the receipt slip.
File the delivery record
Delivery confirmation is your evidence that Sleep Whale was asked. Watch the next statement or two for any further Sleep Whale charge.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Sleep Whale cancellation letter goes
Sleep Whale lists 1267 Willis St., Suite 200, Redding, CA 96001 as its mailing address.
Put ZIP 96001 on the envelope: Redding is in California, and a domestic certified letter is all it takes.
Your name, address and email appear in a short block labelled Name, Address and E-mail, under the greeting “To Whom It May Concern,”.
Prefer to write it yourself? Use our letter template
Every address we hold for Sleep Whale, with the envelope wording
Before you cancel Sleep Whale, 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 Sleep Whale 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
A subscription ends when the company records your request, not when you stop using it, and a letter is the record you can show later.
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.
Sleep Whale cancellation at a glance
- How Sleep Whale accepts cancellations
- By mailed letter
- Mailing address on file
- Sleep Whale 1267 Willis St., Suite 200 Redding, CA 96001
- Country
- United States
- Letter language
- English (template en)
- Added to the database
- October 12, 2026
- Data last checked
