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Best UPU POST*CODE API Alternatives in 2026

Updated

20 tools 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/mo7.6
    UPU POST*CODE API vs Melissa Global Address Verification
  2. 2
    Smarty Address Verification Free trial AndroidapiiOSLinuxMac $46/mo7.4
    UPU POST*CODE API vs Smarty Address Verification
  3. 3
    Hopewiser Address Validation Free trial apiLinuxself-hostedWebWin 7.1
    UPU POST*CODE API vs Hopewiser Address Validation
  4. 4
    Lob Address Verification Free plan apiWeb $260/mo7.1
    UPU POST*CODE API vs Lob Address Verification
  5. 5
    Byteplant Address Validator Free trial apiWebWin 7.0
    UPU POST*CODE API vs Byteplant Address Validator
  6. 6
    Addrex Address Validation API Free plan apiWeb $39/mo6.9
    UPU POST*CODE API vs Addrex Address Validation API
  7. 7
    PostGrid Address Verification Free trial apiself-hostedWeb $18/mo6.8
    UPU POST*CODE API vs PostGrid Address Verification
  8. 8
    Informatica Product 360 apiself-hostedWebWin 6.7
    UPU POST*CODE API vs Informatica Product 360
  9. 9
    Precisely EnterWorks apiWebWin 6.6
    UPU POST*CODE API vs Precisely EnterWorks
  10. 10
    Addressfinder Free trial apiWeb A$19/mo6.5
    UPU POST*CODE API vs Addressfinder
  11. 11
    Oracle PeopleSoft Campus Solutions Financial Aid WebWin 6.2
    UPU POST*CODE API vs Oracle PeopleSoft Campus Solutions Financial Aid
  12. 12
    AFD Postcode WebWin 5.9
    UPU POST*CODE API vs AFD Postcode
  13. 13
    Experian Address Validation Web 5.9
    UPU POST*CODE API vs Experian Address Validation
  14. 14
    PostNL Address Validation API Web 5.8
    UPU POST*CODE API vs PostNL Address Validation API
  15. 15
    Precisely Data Enrichment Web 5.8
    UPU POST*CODE API vs Precisely Data Enrichment
  16. 16
    Addressr Web 5.7
    UPU POST*CODE API vs Addressr
  17. 17
    AddressZen Web 5.7
    UPU POST*CODE API vs AddressZen
  18. 18
    Fetchify Free trial apiWeb £25/mo5.7
    UPU POST*CODE API vs Fetchify
  19. 19
    PostalUp Web 5.7
    UPU POST*CODE API vs PostalUp
  20. 21
    Addresser Web 5.6
    UPU POST*CODE API vs Addresser

UPU POST*CODE API alternatives compared

#ToolScoreFree planFromRuns on
1Melissa Global Address Verification7.6Free plan$40/moAPI, Linux, self-hosted, Web, Windows
2Smarty Address Verification7.4No$46/moAndroid, API, iOS, Linux, Mac, self-hosted, Web, Windows
3Hopewiser Address Validation7.1No—API, Linux, self-hosted, Web, Windows
4Lob Address Verification7.1Free plan$260/moAPI, Web
5Byteplant Address Validator7.0No—API, Web, Windows
6Addrex Address Validation API6.9Free plan$39/moAPI, Web
7PostGrid Address Verification6.8No$18/moAPI, self-hosted, Web
8Informatica Product 3606.7No—API, self-hosted, Web, Windows
9Precisely EnterWorks6.6No—API, Web, Windows
10Addressfinder6.5NoA$19/moAPI, Web
11Oracle PeopleSoft Campus Solutions Financial Aid6.2No—Web, Windows
12AFD Postcode5.9No—Web, Windows
13Experian Address Validation5.9No—Web
14PostNL Address Validation API5.8No—Web
15Precisely Data Enrichment5.8No—Web
16Addressr5.7No—Web
17AddressZen5.7No—Web
18Fetchify5.7No£25/moAPI, Web
19PostalUp5.7No—Web
21Addresser5.6No—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 7.6 out of 10. The others here: Smarty Address Verification, Hopewiser Address Validation, Lob Address Verification 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 on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.