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Postbye vs DoNotPay

DoNotPay is a consumer self-help app. Its App Store listing says it will generate complaint letters and mail them on your behalf. Postbye does one job: we write your cancellation letter and mail it by certified mail with return receipt, for any company with a mailing address, and send you the delivery proof. DoNotPay covers a wider range of problems. Its mailing service page does not mention certified mail, and its site shows no current price and no guarantee.

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.

  • DoNotPay

    How the cancellation is delivered
    The App Store listing says it will “generate complaint letters for you and mail it on your behalf”. The mailing service page describes the service in general terms.
    Whether a physical letter is sent
    Yes, according to the App Store listing, which says it mails letters on your behalf. The listing speaks of complaint letters, not cancellation letters.
    Certified or registered delivery
    Not mentioned on the mailing service page.
    Guarantee
    None. The site says its self-help tools are “never guaranteed to help with any specific situation”. The billing FAQ says to email support for a refund.
    How you pay
    No current price is published on donotpay.com, and its pricing page returns a 404. The billing FAQ says “we ask for a small contribution per month”. It adds that on a monthly or annual subscription “you will only be charged once a month”, and it describes a $0.50 authorization charge. An older App Store listing shows a $35.99 subscription. Its copyright date is 2023, so treat that figure as dated.

Who it suits

DoNotPay may suit you if

DoNotPay may suit you if you want one app for several kinds of consumer problems and you are comfortable with a monthly contribution whose amount is not published on its site.

Postbye suits you if

Postbye suits you if you have one subscription to end and you want a printed letter, certified delivery and a signed record that the company received it.

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.