Cancel your Energieflex subscription by mail
Energieflex deals with cancellations through the post, so the request goes in a letter and the certified-mail receipt is your proof of when. The cancellation address on file for Energieflex is in Nieuwegein, Netherlands.
Let Postbye cancel Energieflex 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 Energieflex.
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- 3 Energieflex cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Energieflex by mail
Note your account details
Energieflex will look your account up from what the letter says, so check the name and email on the account and, if you have one, an account or customer number first.
Write your request
The request is prepared in Dutch (template nl), under the subject line “Onderwerp: annuleringsverzoek – [your name]”: end the subscription, stop all further charges and confirm in writing to you.
Send the letter by certified mail
Take the letter to the post office and ask for certified delivery to 3436 ZZ Nieuwegein. Keep the tracking number it gives you.
Hold on to the receipt
It shows the date Energieflex received your letter. Check your next statement: no Energieflex charge should post after the cancellation date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Energieflex cancellation letter goes
Energieflex takes its post at Nevelgaarde 40, 3436 ZZ Nieuwegein, Netherlands, which is where a cancellation letter belongs.
The postcode 3436 ZZ belongs to Utrecht, Netherlands, so this is where the envelope is delivered.
Your name, address and email appear in a short block labelled Accounthouder, Factuuradres in dossier and E-mailadres in dossier, under the greeting “Geachte heer/mevrouw,”.
Prefer to write it yourself? Use our letter template
Every address we hold for Energieflex, with the envelope wording
Before you cancel Energieflex, 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 Energieflex 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.
Energieflex cancellation at a glance
- How Energieflex accepts cancellations
- By mailed letter
- Mailing address on file
- Energieflex Nevelgaarde 40 3436 ZZ Nieuwegein Netherlands
- Country
- Netherlands
- Letter language
- Dutch (template nl)
- Added to the database
- June 3, 2026
- Data last checked
