Cancel your Fireflies subscription by mail
Fireflies accepts written cancellation requests by post, which makes certified mail the strongest proof that you asked. Fireflies receives written requests in London, United Kingdom.
Let Postbye cancel Fireflies 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 Fireflies.
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- 2 Fireflies cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Fireflies by mail
Find your account details
Before writing, collect the account email, the plan or product name and the invoice or order number from your latest receipt. Fireflies can only act on a request it can match to an account.
Put the request in writing
Ask Fireflies to cancel the account, stop all further charges and confirm in writing. Postbye prepares the letter from our English template, with the subject line “Subject: Cancellation Request – [your name]”.
Send the letter by certified mail
Address the envelope to Fireflies, London, exactly as printed in the next section. Certified mail gives you a tracking number and a delivery record.
File the delivery record
File the receipt with the letter. A Fireflies 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 Fireflies cancellation letter goes
Written requests to Fireflies go to 71-75 Shelton Street, WC2H 9JQ London, United Kingdom.
Postal code WC2H 9JQ places the address in London, United Kingdom.
The database also lists Sunol Boulevard 5424, 10 531, Pleasanton 94566 for Fireflies. Use the first address above unless your agreement names this one.
Inside, the salutation reads “To Whom It May Concern,”, followed by your details under Account holder, Billing address on file and Email on file.
Prefer to write it yourself? Use our letter template
Every address we hold for Fireflies, with the envelope wording
Before you cancel Fireflies, check these
- Apps billed by an app store are cancelled in that store. Check which party appears on your statement.
- Team and business plans are billed per seat. Name the plan and the number of seats in the request.
- Export or download your data first. Access often ends on the cancellation 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 Fireflies 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 software or app subscription
Software plans are billed per plan or per seat, often yearly, and the app store version is billed by the store rather than the developer, so the request has to name the plan and who bills it.
A phone call leaves nothing behind; a letter leaves a copy, a date and a delivery receipt.
Fireflies cancellation at a glance
- How Fireflies accepts cancellations
- By mailed letter
- Mailing address on file
- Fireflies 71-75 Shelton Street WC2H 9JQ London United Kingdom
- Second address on file
- Fireflies Sunol Boulevard 5424 10 531 Pleasanton 94566
- Country
- United Kingdom
- Letter language
- English (template en-generic)
- Category (from the company name)
- Software & apps
- Added to the database
- May 7, 2026
- Data last checked
