Services that mail a cancellation letter for you, compared
Six services that put a cancellation letter in the mail, compared on what one letter costs, who writes it, the mail class and proof, turnaround, the companies covered and refunds.
The short answer
Postbye is our pick. It writes the letter for you, mails it by certified mail the next business day and sends you the proof of delivery, for $23.99 once, to any company in its more than 8,700 company guides. CancelSent and DumpMyGym mail a letter for gyms only; LetterStream, PostalForm and Mailform cost less, but you write the letter and supply the address.
Mail your letter with PostbyeAt a glance
| Criterion | 1 Postbye postbye.com Our pick | 2 CancelSent cancelsent.com | 3 DumpMyGym dumpmygym.com | 4 LetterStream letterstream.com | 5 PostalForm postalform.com | 6 Mailform mailform.io |
|---|---|---|---|---|---|---|
| Price for one cancellation | $23.99 once, taxes included | $24.99 once; a head-office copy is +$14.99 as of November 2026 | $20 (Send It) or $49 (Guaranteed); a free letter to mail yourself as of November 2026 | Certified Mail from $8.63; $11.54 with an electronic return receipt as of November 2026 | $11.40 by Certified Mail, $14.40 with an electronic return receipt (1 page, black and white) as of November 2026 | About $11.98 for a 1-page certified letter ($2.99 + $8.99); +$3.02 for an electronic return receipt as of November 2026 |
| Mails a physical letter | Yes, written for you | Yes, you e-sign it on your phone as of November 2026 | Yes as of November 2026 | Yes, but you write it as of November 2026 | Yes, but you type or upload it as of November 2026 | Yes, but you write it as of November 2026 |
| Mail class and proof | Certified mail, and you get the proof of delivery. Signed proof (USPS electronic return receipt) is +$13.99 at checkout | USPS First-Class with Certified Mail and an electronic return receipt; a proof pack PDF as of November 2026 | USPS Certified Mail; tracking number and a PDF proof of mailing as of November 2026 | USPS First-Class with Certified Mail; tracking and the return receipt signature in your account as of November 2026 | Certified Mail with tracking; the electronic return receipt adds a signature record as of November 2026 | First Class, Certified, Priority, Express or courier; certified tracking, return receipt as a paid add-on as of November 2026 |
| Turnaround | Mailed the next business day; usually delivered in 2 to 5 business days | To print within about an hour; in the mail in 1 to 2 business days as of November 2026 | Printed and mailed within 1 business day; USPS takes 3 to 5 business days as of November 2026 | Printed and mailed in under 2 business days as of November 2026 | Estimate shown before payment; expedited in 1 to 3 days as of November 2026 | Not stated as of November 2026 |
| Companies covered | More than 8,700 company guides, including more than 370 gyms and fitness companies | Gyms only as of November 2026 | Any US gym, studio or health club with a mailing address as of November 2026 | Any US address; no list of companies as of November 2026 | Any US address, plus a guided gym cancellation letter form as of November 2026 | Any address; you write the letter as of November 2026 |
| Refunds | Money-back guarantee within 10 business days if it cannot get the subscription cancelled | Full refund or free resend if USPS returns the letter or has not delivered it in 30 days as of November 2026 | $49 tier only: a refund minus postage (about $8 to $12) if the letter is delivered and the gym does not cancel, at its discretion as of November 2026 | Not stated as of November 2026 | Not stated as of November 2026 | Not stated as of November 2026 |
The ranking
1. Postbye
Our pick$23.99 oncePostbye is built for cancellation letters to any company. You name the company, it writes a formal letter and uses the company’s mailing address from its database, or its dedicated cancellation address when it has one. You see the full letter before it is mailed. Then: “We mail yours by certified mail and send you the proof of delivery.” On the mailing day you get the tracking number and a copy of the letter, and Postbye follows up to confirm the cancellation went through. Signed proof is +$13.99 at checkout.
From postbye.com.
- Letter
- Yes, written for you
- Proof
- Certified mail, and you get the proof of delivery. Signed proof (USPS electronic return receipt) is +$13.99 at checkout
- Turnaround
- Mailed the next business day; usually delivered in 2 to 5 business days
- Covers
- More than 8,700 company guides, including more than 370 gyms and fitness companies
2. CancelSent
$24.99 onceCancelSent mails a gym letter you e-sign on your phone by Certified Mail with an electronic return receipt, for $24.99 once. Gyms only; its order button read “Start my letter (opening soon)” when we read its pages.
From cancelsent.com, as of November 2026.
- Letter
- Yes, you e-sign it on your phone
- Proof
- USPS First-Class with Certified Mail and an electronic return receipt; a proof pack PDF
- Turnaround
- To print within about an hour; in the mail in 1 to 2 business days
- Covers
- Gyms only
3. DumpMyGym
$20 or $49DumpMyGym mails cancellation letters to gyms only: any US gym, studio or health club with a mailing address. It mails by USPS Certified Mail within one business day for $20, or $49 with monitoring and a discretionary refund if the gym does not cancel.
From dumpmygym.com, as of November 2026.
- Letter
- Yes
- Proof
- USPS Certified Mail; tracking number and a PDF proof of mailing
- Turnaround
- Printed and mailed within 1 business day; USPS takes 3 to 5 business days
- Covers
- Any US gym, studio or health club with a mailing address
4. LetterStream
From $8.63LetterStream is a business mail portal, not a cancellation service: you write the letter and it mails it. Certified Mail starts at $8.63, or $11.54 with an electronic return receipt, printed and mailed in under 2 business days, from a free account with no monthly fee.
From letterstream.com, as of November 2026.
- Letter
- Yes, but you write it
- Proof
- USPS First-Class with Certified Mail; tracking and the return receipt signature in your account
- Turnaround
- Printed and mailed in under 2 business days
- Covers
- Any US address; no list of companies
5. PostalForm
From $11.40PostalForm mails any letter you type or upload to a US address, from $11.40 by Certified Mail for one black-and-white page. It has a fill-in form for gym cancellation letters; you supply the gym’s address.
From postalform.com, as of November 2026.
- Letter
- Yes, but you type or upload it
- Proof
- Certified Mail with tracking; the electronic return receipt adds a signature record
- Turnaround
- Estimate shown before payment; expedited in 1 to 3 days
- Covers
- Any US address, plus a guided gym cancellation letter form
6. Mailform
About $11.98Mailform mails a PDF you upload: about $11.98 for a one-page certified letter, plus $3.02 for an electronic return receipt. It has a gym-cancellation landing page; you write the letter.
From mailform.io, as of November 2026.
- Letter
- Yes, but you write it
- Proof
- First Class, Certified, Priority, Express or courier; certified tracking, return receipt as a paid add-on
- Turnaround
- Not stated
- Covers
- Any address; you write the letter
How we ranked them
A letter service earns its fee by doing the parts people get wrong: the wording, the right address and the proof. Services that write the letter for you rank above services that only print and post what you upload. Among those, wider coverage and a stated refund move a service up; price and turnaround decide between close services. CancelSent refunds or resends any order whose letter is returned or not delivered in 30 days; DumpMyGym refunds only on the $49 tier.
Every fact comes from the service’s own pages, read in November 2026; “Not stated” means the service does not say. See How we rank.
Questions
Is a mailed cancellation letter valid?
A letter is written notice, which is what many contracts and several state gym laws ask for. Certified mail adds a dated delivery record, so you can show when the company received it.
Do I have to write the letter myself?
With LetterStream, PostalForm and Mailform, yes: they print and mail what you give them. Postbye writes the letter for you, CancelSent has you e-sign one, and DumpMyGym mails a gym letter for you.
Which service mails the letter fastest?
DumpMyGym and Postbye both mail within one business day: DumpMyGym within 1 business day of payment, Postbye the next business day. CancelSent sends letters to print within about an hour and has them in the mail in 1 to 2 business days; LetterStream prints and mails in under 2 business days.