Cancel your MellowFlow subscription by mail
For MellowFlow 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 MellowFlow is in Newark, United States.
Let Postbye cancel MellowFlow 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 MellowFlow.
- 4.8 from 2,931 reviews
- 3 MellowFlow cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel MellowFlow by mail
Note your account details
Check your membership number, the home club you joined at and the name on the membership agreement before anything else. A request that does not match the account on file at MellowFlow is the easiest one to set aside.
Set out the request
Your Postbye letter to MellowFlow asks for three things: the account closed, no further charges and a written confirmation, all under “Subject: Subscription termination – MellowFlow”. It comes from our English template.
Send it by certified mail
Send the letter to the Newark mailing address shown below by certified mail. Keep the tracking number safe.
Keep proof the letter arrived
Delivery confirmation is your evidence that MellowFlow was asked. Watch the next statement or two for any further MellowFlow charge.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your MellowFlow cancellation letter goes
For a letter to MellowFlow, use 2035 Sunset Lake Road, Newark, DE 19702.
ZIP code 19702 is in Delaware, so the letter stays inside the United States postal system.
The database also lists Jijaws Street 71, Unit 18, 4074 Sumner, Australia for MellowFlow. Use the first address above unless your agreement names this one.
Your details go in a block headed by Name, Address and E-mail, and the opening line is “To Whom It May Concern,”.
Prefer to write it yourself? Use our letter template
Every address we hold for MellowFlow, with the envelope wording
Before you cancel MellowFlow, check these
- A home club can have its own rules. Name the club in the letter so the request is not bounced between locations.
- Freezing or pausing a membership is not cancelling it. Say clearly that you want the membership ended.
- Read the notice window in your agreement. A letter that arrives after the cut-off can miss that month's charge.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel MellowFlow 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 gym or fitness membership
Gyms often require written notice, set a notice window before the next billing date and can tie the cancellation to the home club, so a dated letter is the record that counts.
Putting the request in writing means there is a date on file for when you asked, which matters if a charge appears afterwards.
MellowFlow cancellation at a glance
- How MellowFlow accepts cancellations
- By mailed letter
- Mailing address on file
- MellowFlow 2035 Sunset Lake Road Newark, DE 19702
- Second address on file
- MellowFlow Jijaws Street 71 Unit 18 4074 Sumner Australia
- Country
- United States
- Letter language
- English (template en)
- Category (from the company name)
- Gyms & fitness
- Added to the database
- April 30, 2026
- Data last checked
