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Best Fax APIs in 2026

  1. 1

    FAX.PLUS

    Free plan AndroidiPhoneWeb

    FAX.PLUS offers a small free allowance and several paid page-and-member tiers. Check the per-fax limit and included number or member count against your needs.

    7.3 Free plan · paid from $6.99/mo Visit site
  2. 2

    Faxxing

    Free plan APIWeb
    7.1 Free plan Visit site
  3. 3

    mintfax

    Free plan APIWeb
    7.0 From $0.06 Visit site
  4. 4

    Sinch Fax API

    Free plan APIWeb

    Sinch Fax API provides fax transmission and management through a REST API, with a portal and listed file formats. Note the single-webhook limit and the per-page rate when assessing fit.

    6.7 Pricing on request Visit site
  5. 5

    eFax

    Free trial AndroidAPIiPhone+3

    eFax covers inbound and international faxing across major desktop and mobile platforms, with plans for individuals, teams, and corporate requirements.

    6.5 7-day trial Visit site
  6. 6

    FaxCore

    by FaxCore
    Free trial APISelf-hostedWeb+1

    FaxCore combines enterprise fax workflows with browser archiving, transmission tracking, integrations, and an API.

    6.4 Pricing on request Visit site
  7. 7

    Documo Fax API

    Free trial APIWeb
    6.3 14-day trial Visit site
  8. 8

    Fax² API

    Free trial APIWeb
    6.1 30-day trial Visit site
  9. 9

    ETHERFAX

    by ETHERFAX
    Paid APILinuxMac+3

    ETHERFAX combines fax management with AI document processing and integrations for organizational workflows. Pricing requires contacting sales or a partner, and support hours vary by service level.

    6.0 Pricing on request Visit site
  10. 10

    FAXAGE

    by FAXAGE
    Paid AndroidAPIiPhone+2

    FAXAGE combines several ways to send and receive faxes with API controls and security features. Check each plan’s included minutes and setup fee, and note that international faxing is unavailable.

    6.0 From $3.49/mo Visit site
  11. 11

    Faxsuite REST API

    Free trial APIWeb
    6.0 28-day trial Visit site
  12. 12

    LuzardoFax API

    Free trial APIWeb
    5.9 From $25/mo · 14-day trial Visit site
  13. 13

    Concord Fax API

    Paid APIWeb
    5.8 Visit site
  14. 14

    GoFax REST API

    by GoFax REST API
    Paid AndroidAPIiPhone+3

    GoFax REST API provides broad send, receive, tracking, and integration functions for cloud fax workflows. Review credit expiry, page allowances, and the required integrations before selecting a plan.

    5.8 Visit site
  15. 15

    Openfax Cloud Fax API

    by Openfax Cloud Fax API
    Free trial APIWeb

    Openfax Cloud Fax API covers both programmatic fax operations and web broadcasts, with delivery integrations and reporting.

    5.8 Visit site
  16. 16

    Phaxio

    Free trial APIWeb
    5.7 From $2/mo Visit site
  17. 17

    Send FAX Mail API

    Free trial APIWeb

    Send FAX Mail API combines email-based faxing with REST automation and plan-based controls. Its monthly cost and page allowances should be matched carefully to fax volume and API needs.

    5.7 From $12.99/mo · 7-day trial Visit site
  18. 18

    Notifyre

    by Notifyre
    Paid AndroidAPIiPhone+1

    Choose Notifyre if your organization needs fax and SMS in one service, with API access, integrations, and controls for team use.

    5.6 From 0.05 AUD Visit site
  19. 19

    HumbleFax

    by HumbleFax
    Paid AndroidWeb

    HumbleFax offers email, dashboard, and mobile-web faxing with history, contacts, integrations, and automation interfaces.

    5.4 From $10/mo Visit site
  20. 20

    Innoport Programmable Fax API

    Paid APIWeb
    5.4 From $19.95/mo Visit site
  21. 21

    SRFax

    by SRFax
    Paid AndroidAPIiPhone+3

    SRFax offers multi-platform faxing with inbound service, virtual numbers, mobile apps, and international support.

    5.4 From $12.60/mo Visit site
  22. 22

    WestFax

    by WestFax
    Paid AndroidAPIExtension+4

    Choose WestFax if you need a virtual number for inbound faxing, international faxing, and access across desktop and mobile platforms.

    5.3 From $14.99/mo Visit site
  23. 23

    SingleFax API

    Paid APIWeb
    5.1 From $9.99/mo Visit site
  24. 24

    OpenText Core Fax Management API

    by OpenText Core Fax Management API
    Paid API

    Choose OpenText Core Fax Management API if your organization needs API access to manage cloud fax workflows and usage.

    4.8 Pricing on request Visit site
  25. 25

    SendFax.me Developer API

    Paid Web
    3.9 From $10 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

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