Cancel your Cinergy subscription by mail
Cancelling Cinergy means putting it in writing; the company takes requests by mailed letter, and a tracked one leaves a clear record. Post for Cinergy is handled in Dallas, United States, which is where your letter is headed.
Let Postbye cancel Cinergy 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 Cinergy.
- 4.8 from 2,931 reviews
- 3 Cinergy cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Cinergy by mail
Collect the details you need
Check the name and email on the account and, if you have one, an account or customer number before anything else. A request that does not match the account on file at Cinergy is the easiest one to set aside.
Write the cancellation request
Your Postbye letter to Cinergy asks for three things: the account closed, no further charges and a written confirmation, all under “Subject: Subscription termination – Cinergy”. It comes from our English template.
Post the letter
Send the letter to the Dallas mailing address shown below by certified mail. Keep the tracking number safe.
Keep the proof of delivery
Once the letter is delivered, the date on the receipt is the date Cinergy was told. Compare it with your statements over the next billing cycle.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Cinergy cancellation letter goes
Written requests to Cinergy go to 5720 LBJ Freeway, Suite 625, Dallas, TX 75240.
Dallas is in Texas (ZIP 75240), a domestic address for certified mail within the United States.
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 Cinergy, with the envelope wording
Before you cancel Cinergy, check these
- Look for annual or multi-month plans. A plan paid in advance usually runs to the end of the period you paid for.
- 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.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Cinergy 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.
Cinergy cancellation at a glance
- How Cinergy accepts cancellations
- By mailed letter
- Mailing address on file
- Cinergy 5720 LBJ Freeway Suite 625 Dallas, TX 75240
- Country
- United States
- Letter language
- English (template en)
- Added to the database
- July 17, 2026
- Data last checked
