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On the recordRead 30 Sep 202617 facts
Openfax Cloud Fax API
Openfax Cloud Fax API · Walnut, California, United States · founded 1999
Plans and prices
Standard fax broadcast
$0.03usage-based
US-48 and Canada pricing is listed at $0.03 per page
Read 20 Sep 2026 · openfax.com
Mail merge services broadcast
$0.04usage-based
US-48 and Canada pricing is listed at $0.04 per page
Read 20 Sep 2026 · openfax.com
Fax broadcasting
$3usage-based
US, Canada and worldwide destinations · no monthly fees
Read 30 Sep 2026 · openfax.com
On the record
- Account requirements
- Using the API requires an account, account number and API key obtained from the portal.apidocs.openfax.com · read 30 Sep 2026
- API purpose
- The Openfax Cloud Fax API provides developers access to global facsimile services.apidocs.openfax.com · read 30 Sep 2026
- Broadcast modes
- Standard broadcasts remove duplicate fax numbers, while mail merge personalizes each fax from list data.openfax.com · read 30 Sep 2026
- Data handling
- Openfax states that it does not share customer data except when required by law.openfax.com · read 30 Sep 2026
- Delivery integrations
- Received faxes can be delivered by email, AWS S3 cloud storage or webhook postback.apidocs.openfax.com · read 30 Sep 2026
- Developer credits
- Openfax offers free developer trial credits after registration when contacted.apidocs.openfax.com · read 30 Sep 2026
- Fax operations
- The API supports single faxes, fax broadcasts, mail-merge broadcasts, inbound fax numbers and fax reception.apidocs.openfax.com · read 30 Sep 2026
- Free test fax
- Free proof-copy test faxing is available for broadcast fax orders.openfax.com · read 30 Sep 2026
- Opt-out compliance
- The optional Fax Removal Service supplies a dedicated toll-free number for mass-fax opt-out requests.openfax.com · read 30 Sep 2026
- PDF limit
- The API limits the Base64-encoded PDF input to 50MB.apidocs.openfax.com · read 30 Sep 2026
- Reporting
- Broadcast jobs provide an email summary and JobID_Success.csv and JobID_Failed.csv attachments.openfax.com · read 30 Sep 2026
- Retries
- Single-fax delivery uses up to three redial attempts with a four-minute wait between attempts.apidocs.openfax.com · read 30 Sep 2026
- Scheduling
- Web fax broadcasts can be sent immediately or scheduled for a chosen date and time.openfax.com · read 30 Sep 2026
- Spreadsheet limit
- Openfax does not support multiple worksheets in Excel fax-list files.openfax.com · read 30 Sep 2026
- Support
- API support is offered by phone, chat, email, Slack invite and Skype invite.apidocs.openfax.com · read 30 Sep 2026
