USPS address correction
Change Service Requested Meaning: USPS Endorsement Guide (2026)
If you saw Change Service Requested on a letter or mailing instruction, it is not a warning. It is a USPS handling request that helps the sender learn when an address is wrong, outdated, or no longer deliverable.
Quick answer: Change Service Requested
Change Service Requested is a USPS ancillary service endorsement. It tells USPS the sender wants address-change or nondelivery information if the original address does not work.
- ✓ It is mainly used by businesses and recurring mailers to clean address lists.
- ✓ It can help the sender learn a recipient moved or that an address is not deliverable.
- ✗ It does not guarantee forwarding, delivery, or a faster USPS route.
- ⚠ The exact handling depends on mail class, endorsement setup, and USPS rules.
Table of contents
What does Change Service Requested mean?
Change Service Requested is one of the USPS ancillary service endorsements. These are phrases a mailer prints on a mailpiece to tell USPS what to do when the recipient address is wrong, incomplete, or no longer current.
In plain English: the sender is saying, if this person moved or the address cannot be used, send me the address-change or nondelivery information so I can update my list.
USPS covers ancillary service endorsements in the Domestic Mail Manual. The important part for a normal reader is simple: the phrase is about sender feedback and address correction, not about the recipient doing anything.
If you are trying to understand the full family of endorsements, start with our broader USPS ancillary endorsements guide. This page focuses only on the Change Service Requested wording because that is the phrase people usually search after seeing it on mail.
What happens when mail has Change Service Requested?
The practical result depends on the mail class and the mailer setup. That is why two pieces with the same printed endorsement can behave differently. A business mailer using address correction services may receive an electronic notice. A simpler mailpiece may trigger a different USPS handling path.
The safe way to read it
Change Service Requested means the sender wants USPS feedback about the address. It does not mean the recipient is in trouble, the mail is fake, or USPS is charging you personally.
If you are the recipient, you usually do not need to take action unless the mail itself asks you to respond.
If your issue is that mail came back to you, read the USPS return to sender guide. If your issue is a move, read the USPS change of address guide.
Change Service Requested vs Return Service Requested
These sound similar, but they solve different problems. The short version: Change Service Requested is about learning address changes. Return Service Requested is about getting the mailpiece back when it cannot be delivered.
| Endorsement | Best for | Plain-English meaning |
|---|---|---|
| Change Service Requested | Keeping a mailing list current | Tell me when the address changed or failed. |
| Return Service Requested | Getting undeliverable mail back | Send the physical mailpiece back if it cannot be delivered. |
| Address Service Requested | Forwarding plus address correction | Forward when eligible and also tell me the new address. |
| Forwarding Service Requested | Prioritizing forwarding | Forward the mail when USPS has an active forwarding order. |
When should you use Change Service Requested?
Use it when the address data matters as much as the individual piece of mail. That usually means invoices, member notices, customer mailings, donor mail, insurance notices, compliance mail, or recurring account communication.
Good fit
- ✓ You mail the same list again later.
- ✓ You need to reduce returned or wasted mail.
- ✓ You want cleaner customer address records.
- ✓ Your mail volume is high enough for list hygiene to matter.
Usually not worth it
- ✗ You are mailing one personal letter.
- ✗ You mainly need proof of delivery.
- ✗ You want a recipient signature.
- ✗ You are not set up to process address corrections.
For proof of mailing and delivery events, use certified mail online instead. For normal letters without a trip to the post office, you can send a letter online and let The Letter Pilot print and mail it.
Where do you print Change Service Requested?
For business mail, placement matters. USPS rules are detailed because the endorsement must be machine-readable and associated with the correct mailpiece. Common placement is near the return address or above the delivery address area, but the correct placement can depend on envelope design and barcode layout.
Simple layout rule
Print the endorsement clearly, in all capital letters, using the exact wording:
If you are preparing a commercial mailing, check the current USPS Domestic Mail Manual rules for additional services before printing. For a one-off document, you are usually better off choosing a trackable service than trying to manage endorsements manually.
Need to mail an important letter without USPS guesswork?
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Mail a letter nowFrequently asked questions
What does Change Service Requested mean?
Change Service Requested is a USPS ancillary service endorsement. It tells USPS that the mailer wants address-change or nondelivery information when a piece cannot be delivered as addressed or when forwarding data is available.
Is Change Service Requested the same as Return Service Requested?
No. Return Service Requested is mainly used when the sender wants the physical mailpiece returned if it cannot be delivered. Change Service Requested focuses on getting address-change or nondelivery information back to the mailer, with the exact handling depending on mail class and setup.
Can I write Change Service Requested on a regular envelope?
You can print an ancillary endorsement on eligible mail, but it is mostly useful for business mailers who manage mailing lists. For personal one-off mail, Return Service Requested or sending trackable certified mail is usually simpler.
Does Change Service Requested make USPS forward the letter?
Not by itself. Forwarding depends on the mail class, the recipient forwarding order, and USPS rules for that piece. The endorsement tells USPS what information or handling the sender is requesting if the original address does not work.
Where should Change Service Requested be printed?
USPS placement rules generally put ancillary service endorsements below the return address or above the delivery address area, depending on the mailpiece design. Business mailers should confirm the layout against current USPS DMM rules before mailing.
Who should use Change Service Requested?
It is best for businesses, nonprofits, and recurring mailers that need cleaner address lists. If you only need proof that an important document was sent, certified mail is usually the better route.
Related guides
The broader guide to USPS endorsement phrases and mail handling.
Return to sender USPSWhat happens when mail cannot be delivered and comes back.
USPS change of addressHow forwarding works after someone moves.
Certified mail trackingUse tracking when you need proof that an important letter moved.
The information in this guide is for educational purposes only. The Letter Pilot does not guarantee USPS delivery times, routing, or processing speed. All mail is handled solely by the United States Postal Service, and actual delivery times may vary.
Delivery timelines and tracking information are provided by USPS and are not controlled by The Letter Pilot.