Cancellation service N°1 in United States
Contract number:
To the attention of:
Cancellation Department – Sidekiq
Contributed Systems LLC, PO Box 247
97034 Lake Oswego
Subject: Contract Cancellation – Certified Email Notification
Dear Sir or Madam,
I hereby notify you of my decision to terminate contract number relating to the Sidekiq 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,
14/01/2026
Cancellation Sidekiq: Easy Method
What is Sidekiq
Sidekiq is a background job processing tool for Ruby applications that moves work off web request threads into asynchronous workers. The open‑source Sidekiq gem provides core job processing; commercial Sidekiq Pro and Sidekiq Enterprise add reliability, monitoring, and enterprise features sold directly by Contributed Systems LLC.
How to cancel Sidekiq
- Email support@contribsys.com with your account details, license key or invoice number, and request cancellation. In your message, state whether you want a refund (see the refund policy) and provide the purchase date if you are within 14 days.
- If you upgraded from Pro to Enterprise and want the Pro subscription cancelled and prorated, include that request in the same email after purchasing Enterprise; Contributed Systems will cancel Pro and apply proration on request.
- If you prefer postal notice, send a tracked, signed‑for letter (e.g., raccomandata A/R or equivalent tracked mail) to: Contributed Systems LLC, PO Box 247, Lake Oswego, OR 97034, United States. Include the same account/invoice details and a clear cancellation statement. Follow up by email to confirm receipt.
- Note: There is no App Store or Google Play cancellation path - Sidekiq Pro/Enterprise are sold directly and are not distributed via app stores.
What happens when you cancel
When you cancel a Sidekiq Pro or Enterprise subscription, automatic renewal stops at the end of the current billing term unless the cancellation is combined with an approved refund that takes effect immediately. Your access to commercial features depends on the licensing terms - typically access continues until the paid term expires unless a refund is issued, in which case the subscription is cancelled immediately.
Contributed Systems maintains license records; you should keep invoices and license keys if you may re‑activate later. If you cancelled by postal mail, allow time for processing and confirm via the support email to avoid unintended renewal.
Will I get a refund?
Sidekiq Pro and Enterprise offer refunds up to 14 days (two weeks) after purchase. To request a refund, email support@contribsys.com with your reason and purchase details. If a refund is approved and issued, the subscription is cancelled immediately.
Because Sidekiq is sold by a U.S. company (Contributed Systems LLC), local Canadian statutory remedies may differ; if you have difficulties obtaining a refund, you may consider contacting your credit‑card issuer for dispute options. Always include purchase evidence when requesting refunds to speed resolution.
Sidekiq plans and pricing
| Plan | Price | Period | Features |
|---|---|---|---|
| Sidekiq (Open Source) | C$0.00 | Open Source / Free forever | Core Sidekiq gem - background jobs; LGPL license; community support |
| Sidekiq Pro | Approximately C$135.00/month | Monthly or C$1,360/year (approx.) | Commercial license, additional reliability features, email support |
| Sidekiq Enterprise | C$365/month for up to 100 threads (volume discounts to ~C$258/month) | Monthly (also annual options available) | Enterprise features, rate limiting, metrics, dedicated support; priced per 100-thread pack |
| Sidekiq Enterprise (Unlimited License, Appliance) | C$105,700/year | Annual | Unlimited usage across organization; distribute as appliance; premium enterprise support |
CAD conversions assume an exchange rate near 1 USD = 1.35 CAD. For precise pricing, invoicing in CAD, or volume discounts, contact Contributed Systems directly via support@contribsys.com.
Your consumer rights in Canada
Under Canadian consumer protection practices, digital subscription products commonly offer a 14‑day cancellation/refund window, but specific statutory rights depend on how the product is delivered and on cross‑border purchase rules. Because Sidekiq is sold by a U.S. company, Canadian provincial consumer protection statutes may not automatically govern the contract; however, standard payment dispute channels (for example, contacting your card issuer) remain available if you cannot resolve a refund with the vendor.
Sidekiq’s stated 14‑day refund policy aligns with common industry practice for digital goods. Note that App Store or Google Play policies do not apply here because Sidekiq Pro and Enterprise are not distributed through those platforms.
Customer experiences
Many users praise Sidekiq Pro for reliability, the dashboard and monitoring tools, and straightforward setup - feedback consistently highlights the operational stability Pro adds on top of the open‑source core. These strengths make it attractive for production workloads where background job reliability matters.
Some customers report downsides: at least one user said they were not notified before a license expired, which disrupted feature releases; others have expressed concerns about persistence and felt certain promised improvements were incomplete. These mixed reports suggest confirming license expiry dates and backup/monitoring practices before relying on any single support expectation.
Documentation checklist
- Invoice or receipt showing purchase date and amount
- License key or subscription ID
- Account email and contact details used for purchase
- Reason for cancellation (helpful for refund requests)
- Copies of any prior support correspondence
- Tracking number if you sent postal cancellation
Common mistakes
Common mistakes include assuming app‑store cancellation processes apply - Sidekiq is not sold through App Store or Google Play, so attempting to cancel there will not stop Sidekiq billing. Another frequent error is failing to supply clear purchase evidence (invoice, license key, account email) when requesting cancellation or refund, which delays processing.
For postal cancellations, people often use untracked mail; because the vendor requires clear receipt, always use tracked, signed‑for shipping and then confirm via the support email to ensure timely handling.
Comparative recap
| Method | Refund | Difficulty |
|---|---|---|
| Email to support@contribsys.com | Possible within 14 days; refunds processed on request | Low |
| Postal tracked letter to PO Box (formal notice) | Possible within 14 days if refund requested via support; useful as formal record | Medium (slower processing) |
| Upgrade from Pro to Enterprise | Proration/cancellation of Pro applied if requested after purchase | Low |
| App Store / Google Play | N/A - Sidekiq is not distributed via app stores | N/A |
After cancelling
After you cancel, keep copies of the cancellation confirmation and any refund correspondence. If you need to follow up, email support@contribsys.com (use support@contribsys.com) and reference your original request, invoice number, and any tracking or confirmation numbers. For technical documentation, community support, and source code, see the Sidekiq repository and docs on GitHub: Sidekiq on GitHub.
Address
For postal cancellation or formal billing notices, send tracked mail to:
Contributed Systems LLC, PO Box 247, Lake Oswego, OR 97034, United States
Use a tracked, signed‑for service (e.g., raccomandata A/R or equivalent) and keep the tracking/receipt number for your records.