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mintfax offers two retention modes to support different compliance requirements.

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Standard Mode

Fax data and metadata are retained for a configurable period, then automatically deleted. The default retention period is set at the account level and can be overridden.
  • Fax documents, images, recipient/sender details, and transaction metadata are deleted when the retention period expires
  • Billing records and credit transactions are retained permanently
  • You can actively delete fax data at any time via DELETE /fax/{id}, without waiting for the retention period
curl -X DELETE https://api.mintfax.com/v1/faxes/fax_8aZqRm4yT3vK7pNxJ2bH9c \
  -H "Authorization: Bearer mfx_live_abc123..."

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Zero-Footprint Mode

Fax data and metadata are deleted immediately after the fax reaches a terminal state (delivered or failed). This supports HIPAA’s minimum-necessary principle. Enable via account settings: 
curl -X PUT https://api.mintfax.com/v1/account/settings \
  -H "Authorization: Bearer mfx_live_abc123..." \
  -H "Content-Type: application/json" \
  -d '{"zero_footprint": true}'
In zero-footprint mode:
  • GET /fax/{id}/image returns 410 Gone after the fax completes
  • POST /fax/{id}/resend returns 410 Gone (original document is deleted)
  • GET /fax/{id} returns only the fax ID, status, and timestamps (no content or PII)

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What Gets Deleted vs Retained

CategoryDeleted per retentionRetained permanently
Fax documentsYes
Fax imagesYes
Recipient/sender detailsYes
Transaction metadataYes
Billing recordsYes
Credit transactionsYes
Account informationYes

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Compliance Boundary

mintfax compliance commitments (HIPAA, GDPR, zero-footprint) cover mintfax infrastructure only: our API, S3 storage, DynamoDB, Postgres, and application logs. They do not extend to:
  • Upstream carrier systems (carriers retain their own logs per their own policies)
  • Recipient-side fax infrastructure
  • Your webhook endpoints receiving fax data
  • Third-party payment processors
We configure sub-processors we control (carriers, infrastructure) to uphold our retention commitments. For example, carriers with a “no image retention” option are configured to use it.

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BAA

A Business Associate Agreement is available at every paid tier, free of charge. No enterprise plan or sales call required.
Last modified on May 11, 2026