Postbye vs MailMyCancel: which one mails your cancellation letter?

MailMyCancel is an online service that mails a cancellation letter by USPS Certified Mail for $14.99 a letter, with no account and no monthly fee, according to its pricing page. You pick the company from its list or type the address yourself, and it says it sends the letter to the company’s corporate headquarters. Postbye does one job too: you pick the company, and we write your cancellation letter, address it from our database of company mailing addresses and mail it by certified mail with return receipt the next business day. MailMyCancel lists addresses for 100+ services, and its refund policy says no refund is possible once the letter is with USPS.

Facts checked on 1 November 2026 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.
Who writes the letter and finds the address
We do. Pick the company and we write your cancellation letter. It goes to the company’s mailing address from our database, or to its dedicated cancellation address when it has one.
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.
MailMyCancel
How the cancellation is delivered
The site says “We print, track, and send your formal termination letter to any corporate HQ via USPS Certified Mail®.” Its terms of service say “Letters are processed and sent to USPS within 24 business hours of payment confirmation.”
Whether a physical letter is sent
Yes. A printed letter goes by USPS Certified Mail, and its pricing view says “USPS Postage & Handling Included”.
Who writes the letter and finds the address
It does, for the companies it lists. Its company picker says “We source verified corporate headquarters addresses for 100+ services”. For a company it does not list, it says “You can still send a letter by entering the address manually.” Its how-it-works view says its templates “automatically cite consumer protection laws based on your state”.
Certified or registered delivery
Yes, on every letter. Its pricing view lists “Official USPS Certified Mail® Tracking” and “Physical Wet Signature Proof”, and its how-it-works view says “Once the company signs for the mail, you receive an official USPS confirmation.” The pages we checked do not mention a return receipt by name.
Guarantee
Its pricing view lists a “Return-to-Sender (RTS) Guarantee”, and its home page explains that if the company refuses the letter, “it comes back to you marked ‘Refused’”. Its terms say “We cannot guarantee that your service provider will comply with your request.” Its refund policy offers a full refund only if you cancel before printing, “usually within 1 hour”, and says “Once a letter is handed to USPS, no refunds are possible.”
How you pay
One price per letter: $14.99, with “USPS Postage & Handling Included”, according to its pricing view, which also says “No monthly fees. No accounts.”

Postbye and MailMyCancel compared side by side
What you get	Postbye	MailMyCancel
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.	The site says “We print, track, and send your formal termination letter to any corporate HQ via USPS Certified Mail®.” Its terms of service say “Letters are processed and sent to USPS within 24 business hours of payment confirmation.”
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.	Yes. A printed letter goes by USPS Certified Mail, and its pricing view says “USPS Postage & Handling Included”.
Who writes the letter and finds the address	We do. Pick the company and we write your cancellation letter. It goes to the company’s mailing address from our database, or to its dedicated cancellation address when it has one.	It does, for the companies it lists. Its company picker says “We source verified corporate headquarters addresses for 100+ services”. For a company it does not list, it says “You can still send a letter by entering the address manually.” Its how-it-works view says its templates “automatically cite consumer protection laws based on your state”.
Certified or registered delivery	Yes. Certified mail with return receipt, so you can show who received your letter and on which date.	Yes, on every letter. Its pricing view lists “Official USPS Certified Mail® Tracking” and “Physical Wet Signature Proof”, and its how-it-works view says “Once the company signs for the mail, you receive an official USPS confirmation.” The pages we checked do not mention a return receipt by name.
Guarantee	A money-back guarantee if the company does not cancel.	Its pricing view lists a “Return-to-Sender (RTS) Guarantee”, and its home page explains that if the company refuses the letter, “it comes back to you marked ‘Refused’”. Its terms say “We cannot guarantee that your service provider will comply with your request.” Its refund policy offers a full refund only if you cancel before printing, “usually within 1 hour”, and says “Once a letter is handed to USPS, no refunds are possible.”
How you pay	At checkout, when you approve your order. The order summary shows the amount before you pay.	One price per letter: $14.99, with “USPS Postage & Handling Included”, according to its pricing view, which also says “No monthly fees. No accounts.”

Unlimited cancellation letters with Postbye Plus

Postbye Plus includes unlimited cancellation letters, each written, printed and mailed for you. What Postbye Plus includes

Who it suits

MailMyCancel may suit you if

MailMyCancel may suit you if the company you are leaving is on its list and you want one flat price for a certified letter sent to that company’s headquarters.

Postbye suits you if

Postbye suits you if you want the letter written and addressed for any company with a mailing address, sent by certified mail with return receipt, with the signed delivery proof emailed to you.

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.

MailMyCancel website (home, pricing, how it works, terms of service and refund policy): https://mailmycancel.com/