Cancel your Umobix subscription by mail
Umobix accepts written cancellation requests by post, which makes certified mail the strongest proof that you asked. The cancellation address on file for Umobix is in London, United Kingdom.
Let Postbye cancel Umobix 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 Umobix.
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- 2 Umobix cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Umobix by mail
Get your account details together
You will need the account or subscription number, the email the plan was bought with and the address or devices it covers. Use exactly the details Umobix holds, so the request can be matched to your account.
Prepare the letter
State plainly that you want the Umobix account cancelled, further charges stopped and a written confirmation sent to you. Postbye sets this out in a ready English template (“Subject: Cancellation Request – [your name]”).
Send it by certified mail
Send the letter to the London mailing address shown below by certified mail. Keep the tracking number safe.
File the delivery record
File the receipt with the letter. A Umobix 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 Umobix cancellation letter goes
Written requests to Umobix go to Hatton Garden 63 - 66, 5th Floor, Suit 23, EC1N 8LE London, United Kingdom.
Copy the postal code EC1N 8LE exactly: it is what routes the letter to England, United Kingdom.
The letter is addressed “To Whom It May Concern,” and its details block uses the labels Account holder, Billing address on file and Email on file.
Prefer to write it yourself? Use our letter template
Before you cancel Umobix, check these
- Keep copies of anything you return, such as a control panel or camera, and send it with tracking.
- Monitored plans can run on a fixed term. Check your agreement for the end date and any early-termination fee.
- Software plans may auto-renew a few days before the term ends. Send the request ahead of the renewal date.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Umobix 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 security or identity-protection subscription
Security subscriptions often auto-renew and monitored plans can sit on a fixed contract term, so it matters when the request reaches the provider and whether it covers every device or location.
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.
Umobix cancellation at a glance
- How Umobix accepts cancellations
- By mailed letter
- Mailing address on file
- Umobix Hatton Garden 63 - 66 5th Floor, Suit 23 EC1N 8LE London United Kingdom
- Country
- United Kingdom
- Letter language
- English (template en-generic)
- Category (from the company name)
- Security & identity
- Added to the database
- May 28, 2026
- Data last checked
