Cancel your Significa subscription by mail
Significa deals with cancellations through the post, so the request goes in a letter and the certified-mail receipt is your proof of when. Significa receives written requests in Porto, Portugal.
Let Postbye cancel Significa 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 Significa.
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- 3 Significa cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Significa by mail
Note your account details
Before writing, collect the name and email on the account and, if you have one, an account or customer number. Significa can only act on a request it can match to an account.
Write the cancellation request
The request is prepared in Portuguese (template pt), under the subject line “Assunto: Solicitação de Cancelamento – [your name]”: end the subscription, stop all further charges and confirm in writing to you.
Post it with proof of delivery
Send the letter to the Porto mailing address shown below by certified mail. Keep the tracking number safe.
Keep the proof of delivery
Keep the tracking record with your copy of the letter. If Significa bills you after the date it received the request, you have the dates to point to.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Significa cancellation letter goes
Written requests to Significa go to Rua da Torrinha 154, 4050-609 Porto, Portugal.
Copy the postal code 4050-609 exactly: it is what routes the letter to Porto, Portugal.
The database also lists Rua de Santa Catarina 1000, 4000-447 Porto, Portugal for Significa. Use the first address above unless your agreement names this one.
Your name, address and email appear in a short block labelled Titular da conta, Endereço de cobrança registrado and E-mail registrado, under the greeting “A quem possa interessar,”.
Prefer to write it yourself? Use our letter template
Every address we hold for Significa, with the envelope wording
Before you cancel Significa, check these
- 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.
- Write well before the next billing date. A request that arrives after it can leave one more charge on your statement.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Significa 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.
Significa cancellation at a glance
- How Significa accepts cancellations
- By mailed letter
- Mailing address on file
- Significa Rua da Torrinha 154 4050-609 Porto Portugal
- Second address on file
- Significa Rua de Santa Catarina 1000 4000-447 Porto Portugal
- Country
- Portugal
- Letter language
- Portuguese (template pt)
- Added to the database
- May 28, 2026
- Data last checked
