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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/mo7.1
    UPU POST*CODE API vs Melissa Global Address Verification
  2. 2
    Addrex Address Validation API Free plan apiWeb $39/mo6.8
    UPU POST*CODE API vs Addrex Address Validation API
  3. 3
    Lob Address Verification Free plan apiWeb $260/mo6.7
    UPU POST*CODE API vs Lob Address Verification
  4. 4
    Smarty Address Verification Free trial AndroidapiiOSLinuxMac $46/mo6.6
    UPU POST*CODE API vs Smarty Address Verification
  5. 5
    Byteplant Address Validator Free trial apiWebWin 6.4
    UPU POST*CODE API vs Byteplant Address Validator
  6. 6
    Hopewiser Address Validation Free trial apiLinuxself-hostedWebWin 6.4
    UPU POST*CODE API vs Hopewiser Address Validation
  7. 7
    Informatica Product 360 apiself-hostedWebWin 6.3
    UPU POST*CODE API vs Informatica Product 360
  8. 8
    PostGrid Address Verification Free trial apiself-hostedWeb $18/mo6.2
    UPU POST*CODE API vs PostGrid Address Verification
  9. 9
    Precisely EnterWorks apiWebWin 6.2
    UPU POST*CODE API vs Precisely EnterWorks
  10. 10
    Addressfinder Free trial apiWeb A$19/mo5.9
    UPU POST*CODE API vs Addressfinder
  11. 11
    Fetchify Free trial apiWeb £25/mo5.9
    UPU POST*CODE API vs Fetchify
  12. 12
    Oracle PeopleSoft Campus Solutions Financial Aid WebWin 5.9
    UPU POST*CODE API vs Oracle PeopleSoft Campus Solutions Financial Aid
  13. 13
    AFD Postcode WebWin 5.8
    UPU POST*CODE API vs AFD Postcode
  14. 14
    Experian Address Validation Web 5.7
    UPU POST*CODE API vs Experian Address Validation
  15. 15
    PostNL Address Validation API Web 5.7
    UPU POST*CODE API vs PostNL Address Validation API
  16. 16
    Precisely Data Enrichment Web 5.7
    UPU POST*CODE API vs Precisely Data Enrichment
  17. 17
    Addressr Web 5.6
    UPU POST*CODE API vs Addressr
  18. 18
    PostalUp Web 5.6
    UPU POST*CODE API vs PostalUp
  19. 20
    AddressZen Web 5.5
    UPU POST*CODE API vs AddressZen
  20. 21
    Addresser Web 5.4
    UPU POST*CODE API vs Addresser

UPU POST*CODE API alternatives compared

#AppScoreFree planFromRuns on
1Melissa Global Address Verification7.1Free plan$40/moAPI, Linux, self-hosted, Web, Windows
2Addrex Address Validation API6.8Free plan$39/moAPI, Web
3Lob Address Verification6.7Free plan$260/moAPI, Web
4Smarty Address Verification6.6No$46/moAndroid, API, iOS, Linux, Mac, self-hosted, Web, Windows
5Byteplant Address Validator6.4No—API, Web, Windows
6Hopewiser Address Validation6.4No—API, Linux, self-hosted, Web, Windows
7Informatica Product 3606.3No—API, self-hosted, Web, Windows
8PostGrid Address Verification6.2No$18/moAPI, self-hosted, Web
9Precisely EnterWorks6.2No—API, Web, Windows
10Addressfinder5.9NoA$19/moAPI, Web
11Fetchify5.9No£25/moAPI, Web
12Oracle PeopleSoft Campus Solutions Financial Aid5.9No—Web, Windows
13AFD Postcode5.8No—Web, Windows
14Experian Address Validation5.7No—Web
15PostNL Address Validation API5.7No—Web
16Precisely Data Enrichment5.7No—Web
17Addressr5.6No—Web
18PostalUp5.6No—Web
20AddressZen5.5No—Web
21Addresser5.4No—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 7.1 out of 10. The others here: Addrex Address Validation API, Lob Address Verification, Smarty 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: documentation depth, a free tier and the platforms it runs on.