Fax From SharePoint — Using Power Automate and Our API or Import-from-Link

How it works

You build a Power Automate flow triggered by When a file is created in a library, or when a Fax? column is set on an item. The flow reads the destination number from a column and gets a link to the file. If the file can be reached at a shareable HTTPS URL, pass that as document_url so our server fetches it behind an SSRF guard. If it must stay inside the tenant, use the Get file content action and send the bytes inline as base64. The flow POSTs to /v1/faxes with your bearer key, captures the fax id, and can write it back into a library column so the document shows its own send status.

What you can do

• ✓Fax a document when it lands in a SharePoint library or a column is set
• ✓Read the destination number from a library column into the request
• ✓Pass a shareable link as document_url, or send file bytes inline
• ✓POST to /v1/faxes from a Power Automate HTTP action with your key
• ✓Write the fax id back into a library column for per-document status
• ✓Register a fax webhook to update that column when delivery is confirmed

Setup steps

1. 1Put the account on Business or Enterprise and create a key at /dashboard/developers
2. 2Add columns to the library for the fax number, a trigger, and a result
3. 3Build a Power Automate flow triggered on file creation or a column change
4. 4Get the file as a link (document_url) or as content (inline base64)
5. 5POST the recipient and document to /v1/faxes in an HTTP action
6. 6Write the fax id back to a column and register a webhook for delivery

Example

// Power Automate — HTTP action after a SharePoint trigger
POST https://www.sendfaxmail.com/v1/faxes
Headers:
  Authorization: Bearer sfm_live_xxxxxxxx
  Content-Type: application/json
Body:
  { "to": "@{items('Apply_to_each')?['FaxNumber']}",
    "document_url": "@{body('Create_share_link')?['link']}" }

SharePoint Fax — FAQ