Cancellation service N°1 in United Kingdom
Contract number:
To the attention of:
Cancellation Department – Slack
Salesforce Tower, Bishopsgate Floor 26, 110
EC2N 4AY London
Subject: Contract Cancellation – Certified Email Notification
Dear Sir or Madam,
I hereby notify you of my decision to terminate contract number relating to the Slack service. This notification constitutes a firm, clear and unequivocal intention to cancel the contract, effective at the earliest possible date or in accordance with the applicable contractual notice period.
I kindly request that you take all necessary measures to:
– cease all billing from the effective date of cancellation;
– confirm in writing the proper receipt of this request;
– and, where applicable, send me the final statement or balance confirmation.
This cancellation is sent to you by certified email. The sending, timestamping and integrity of the content are established, making it equivalent proof meeting the requirements of electronic evidence. You therefore have all the necessary elements to process this cancellation properly, in accordance with the applicable principles regarding written notification and contractual freedom.
In accordance with the Consumer Rights Act 2015 and data protection regulations, I also request that you:
– delete all my personal data not necessary for your legal or accounting obligations;
– close any associated personal account;
– and confirm to me the effective deletion of data in accordance with applicable rights regarding privacy protection.
I retain a complete copy of this notification as well as proof of sending.
Yours sincerely,
18/01/2026
Cancellation Slack: Easy Method
What is Slack
Slack is a workplace collaboration platform that provides chat channels, direct messages, file sharing and integrations with other business tools to support team communication and coordination. It is sold primarily as a business service (B2B) with tiered paid plans that add administrative and compliance features beyond the free plan.
How to cancel Slack
- Web (direct via Slack website) - Workspace Owners or Admins: sign in, open the workspace menu or Admin menu, go to Manage billing, choose Change plan details, and select “Downgrade to Free.” Downgrades can take effect immediately or at the next renewal depending on the option shown; unused portions may be credited as Slack credits but Slack’s policy does not provide refunds for partial billing periods.
- iOS (App Store) - Slack does not support in‑app cancellation on iOS. Manage and cancel your subscription through your Apple ID: open iOS Settings → Apple ID → Subscriptions, find Slack and cancel there.
- Android (Google Play) - If your Slack subscription was billed via Google Play, cancel in the Google Play Store app under Payments & Subscriptions → Subscriptions; it cannot be canceled from within the Slack app itself.
- Formal written cancellation - if you require a formal disdetta by letter, send registered mail (raccomandata A/R) to Slack UK Limited at the company address (see Address section below); postal cancellations may be used in addition to or instead of online steps for formal notice.
What happens when you cancel
When a paid Slack plan is cancelled, the workspace typically retains access to paid features until the end of the current billing period unless the downgrade is applied immediately. After the paid period ends, the workspace is switched to the Free plan; workspace content (channels, messages, files and settings) remains but access to paid features is removed. Admins retain workspace control and can re‑subscribe at any time. Message history and integrations remain subject to the limits of the Free plan once the paid period has ended.
Will I get a refund?
Slack’s stated policy is that cancelling does not usually result in a refund for unused time: you generally keep access until the end of the current billing period but do not receive refunds or credits for partial billing periods. Free trials end automatically; if you downgrade before a trial ends you should not be charged. In jurisdictions where consumer protection laws cannot be excluded, limited remedies such as repair, replacement or a pro rata refund of prepaid fees may apply as described in Slack’s User Terms.
Slack plans and pricing
| Plan | Billing | Approx. CAD (reported) | Features (summary) |
|---|---|---|---|
| Pro | Annually billed / monthly options | Approx. C$20/user/month (reported - not an official CAD price) | Unlimited message history, unlimited integrations, group huddles, additional admin controls |
| Business+ | Annually billed / monthly options | Varies | Enhanced security, admin and compliance features; exact CAD equivalents not publicly listed |
| Free | Free | Free | Core messaging and limited history, basic integrations |
Your consumer rights in Canada
Slack is provided as a business (workplace) tool and its User Terms state that consumer protection laws generally do not apply to the service except where such laws cannot be excluded. In Canada, this means typical consumer protections may be limited for B2B contracts, but statutory rights that cannot be contractually excluded may still apply depending on the province. Where applicable law requires it, remedies may include repair, replacement or a pro rata refund of prepaid fees rather than full discretionary refunds.
Customer experiences
Public reviews in Canada are mixed. Positive feedback highlights improved team communication, well‑organized channels, strong third‑party integrations and productivity gains. Negative reports commonly describe customer support challenges, occasional login or message retrieval issues, frustrations with search or storage limits, and concerns over policy or sales practices since corporate changes. Individual experiences vary by workspace size, administrative practices and use of integrations.
Documentation checklist
- Workspace name and Workspace Owner or Admin contact details
- Billing account or invoice number and date of last payment
- Subscription method (direct Slack, Apple App Store, Google Play) and related account IDs (Apple ID / Google account email)
- Evidence of trial start date if cancelling a trial
- Copies of any prior correspondence with Slack support about billing or cancellation
- If sending postal cancellation, a signed letter and proof of registered delivery (raccomandata A/R)
Common mistakes
Users often assume they can cancel a subscription from within the Slack mobile app - for iOS and Android, subscriptions billed through Apple or Google must be cancelled in those stores. Another common error is not checking which account or workspace is actually on the paid plan; only workspace Owners/Admins can change billing. Some users expect prorated refunds for mid‑period cancellations; Slack’s standard policy is no refunds for unused time. Finally, failing to keep records of confirmation or invoice numbers can make resolving disputes harder.
Comparative recap
| Method | Refund | Difficulty |
|---|---|---|
| Web (direct via Slack billing page) | No refund for partial periods (credits possible in some cases) | Easy for Workspace Owners/Admins |
| iOS (Apple App Store) | Handled by Apple - refunds depend on Apple policies | Easy to moderate (manage via Apple ID subscriptions) |
| Android (Google Play) | Handled by Google Play - refunds depend on Google policies | Easy to moderate (manage via Google Play subscriptions) |
| Postal letter (formal disdetta to UK address) | No guarantee of refund; used for formal notice or disputes | Formal / Moderate (requires registered mail and record keeping) |
After cancelling
After you cancel, keep a record of the cancellation confirmation or the final invoice showing the end of the paid period. If you were billed through Apple or Google, check your platform transaction history and any confirmation emails. For help and official guidance see Slack’s billing FAQ at Slack Billing FAQ, Slack’s trial article at Try a paid Slack plan for free, and a general how‑to article at How to cancel a Slack subscription. If you believe local consumer law applies, consult the relevant provincial consumer protection office or legal advice for remedies.
Address
Slack UK Limited, Salesforce Tower, Bishopsgate Floor 26, 110 EC2N 4AY, London, United Kingdom