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Best UPU POST*CODE API Alternatives in 2026

Updated

20 apps from address verification software ranked against UPU POST*CODE API on the same published basis.

  1. 1
    Melissa Global Address Verification Free plan apiLinuxself-hostedWebWin $40/mo6.5
    UPU POST*CODE API vs Melissa Global Address Verification
  2. 2
    Addrex Address Validation API Free plan apiWeb $39/mo6.4
    UPU POST*CODE API vs Addrex Address Validation API
  3. 3
    Lob Address Verification Free plan apiWeb $260/mo6.3
    UPU POST*CODE API vs Lob Address Verification
  4. 4
    Byteplant Address Validator Free trial apiWebWin 5.5
    UPU POST*CODE API vs Byteplant Address Validator
  5. 5
    Hopewiser Address Validation Free trial apiLinuxself-hostedWebWin 5.5
    UPU POST*CODE API vs Hopewiser Address Validation
  6. 6
    PostGrid Address Verification Free trial apiself-hostedWeb $18/mo5.4
    UPU POST*CODE API vs PostGrid Address Verification
  7. 7
    Smarty Address Verification Free trial AndroidapiiOSLinuxMac $46/mo5.3
    UPU POST*CODE API vs Smarty Address Verification
  8. 8
    AFD Postcode WebWin 5.2
    UPU POST*CODE API vs AFD Postcode
  9. 9
    Experian Address Validation Web 5.2
    UPU POST*CODE API vs Experian Address Validation
  10. 10
    PostalUp Web 5.2
    UPU POST*CODE API vs PostalUp
  11. 11
    PostNL Address Validation API Web 5.2
    UPU POST*CODE API vs PostNL Address Validation API
  12. 12
    Precisely Data Enrichment Web 5.2
    UPU POST*CODE API vs Precisely Data Enrichment
  13. 13
    Addressr Web 5.1
    UPU POST*CODE API vs Addressr
  14. 14
    Informatica Product 360 apiself-hostedWebWin 5.1
    UPU POST*CODE API vs Informatica Product 360
  15. 15
    Precisely EnterWorks apiWebWin 5.1
    UPU POST*CODE API vs Precisely EnterWorks
  16. 17
    Oracle PeopleSoft Campus Solutions Financial Aid WebWin 5.0
    UPU POST*CODE API vs Oracle PeopleSoft Campus Solutions Financial Aid
  17. 18
    Addressfinder Free trial apiWeb A$19/mo4.9
    UPU POST*CODE API vs Addressfinder
  18. 19
    Addresser Web 4.8
    UPU POST*CODE API vs Addresser
  19. 20
    AddressZen Web 4.8
    UPU POST*CODE API vs AddressZen
  20. 21
    Fetchify Free trial apiWeb £25/mo4.8
    UPU POST*CODE API vs Fetchify

UPU POST*CODE API alternatives compared

#AppScoreFree planFromRuns on
1Melissa Global Address Verification6.5Free plan$40/moAPI, Linux, self-hosted, Web, Windows
2Addrex Address Validation API6.4Free plan$39/moAPI, Web
3Lob Address Verification6.3Free plan$260/moAPI, Web
4Byteplant Address Validator5.5No—API, Web, Windows
5Hopewiser Address Validation5.5No—API, Linux, self-hosted, Web, Windows
6PostGrid Address Verification5.4No$18/moAPI, self-hosted, Web
7Smarty Address Verification5.3No$46/moAndroid, API, iOS, Linux, Mac, self-hosted, Web, Windows
8AFD Postcode5.2No—Web, Windows
9Experian Address Validation5.2No—Web
10PostalUp5.2No—Web
11PostNL Address Validation API5.2No—Web
12Precisely Data Enrichment5.2No—Web
13Addressr5.1No—Web
14Informatica Product 3605.1No—API, self-hosted, Web, Windows
15Precisely EnterWorks5.1No—API, Web, Windows
17Oracle PeopleSoft Campus Solutions Financial Aid5.0No—Web, Windows
18Addressfinder4.9NoA$19/moAPI, Web
19Addresser4.8No—Web
20AddressZen4.8No—Web
21Fetchify4.8No£25/moAPI, Web
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Questions about UPU POST*CODE API alternatives

What is the best alternative to UPU POST*CODE API?

Melissa Global Address Verification, number 1 in address verification software with a score of 6.5 out of 10. The others here: Addrex Address Validation API, Lob Address Verification, Byteplant Address Validator and 16 more.

What is the best free alternative to UPU POST*CODE API?

Melissa Global Address Verification is the best-ranked alternative with a free plan. 3 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.