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Postbye vs Rocket Money

Rocket Money is a personal finance app. Its paid plans include a cancellation concierge, a team that says it can cancel many unwanted subscriptions for you, usually in 2 to 10 days. The pages we checked do not describe a mailed letter. Postbye mails a printed cancellation letter by certified mail with return receipt, for any company with a mailing address, and sends you the delivery proof. If you want help across many subscriptions inside a finance app, Rocket Money is built for that. If you want a paper record that one company received your cancellation, a certified letter is the stronger one.

Facts checked on from each service’s own public pages. They may have changed since.

What you get

  • Postbye

    How the cancellation is delivered
    We write your letter, print it and mail it the next business day. You get the tracking number and the signed delivery proof by email.
    Whether a physical letter is sent
    Yes. One printed letter goes through the mail to the company’s mailing address. It works for any company you can write to.
    Certified or registered delivery
    Yes. Certified mail with return receipt, so you can show who received your letter and on which date.
    Guarantee
    A money-back guarantee if the company does not cancel.
    How you pay
    At checkout, when you approve your order. The order summary shows the amount before you pay.

  • Rocket Money

    How the cancellation is delivered
    A human-assisted concierge on Premium and Premium+. The pricing article says “we can cancel many unwanted subscriptions for you” and that “it usually takes the team 2-10 days”.
    Whether a physical letter is sent
    Not mentioned. The pages we checked describe a team doing the cancellation, not a mailed letter.
    Certified or registered delivery
    Not mentioned.
    Guarantee
    No guarantee on cancellations that we found. Bill negotiation has a success fee of “35% and 60% of the first year’s savings”, and the same article says that if its negotiators cannot get you a better deal, you pay nothing.
    How you pay
    A free tier at $0 a month. Premium is “pay what you think is fair”, typically $7 to $14 a month, a range the article says is subject to change. Premium+ is $15 a month. Source: the pricing article, published 19 January 2026.

Who it suits

Rocket Money may suit you if

Rocket Money may suit you if you want one app to track all your subscriptions and spending, and you are happy for a team to handle several cancellations on a plan.

Postbye suits you if

Postbye suits you if a company asks for written notice, if you tried to cancel and the charges continued, or if you want proof of delivery for one cancellation.

Send your letter by certified mail, with the proof

Pick the company, add your details and approve your letter. We mail it the next business day and email you the signed delivery proof.

Start your cancellation

Keep reading

Other comparisons

Sources

Every fact about the other service comes from its own pages, listed here.