Coverage

mintfax is a developer-first fax service that sends outbound faxes to landline destinations across North America, Europe, and Asia-Pacific. Every destination the API accepts uses the same feature set: the same flat per-page price, the same 10-code error taxonomy, the same retry semantics, and the same signed webhooks. International sending is not a separate product tier, a higher-plan feature, or an enterprise upsell.

Where mintfax sends

Most landline numbers in North America, Europe, and Asia-Pacific accept faxes.

Every receiving number is written with a leading +, a country code, and the subscriber digits, with no spaces, hyphens, or parentheses. The docs page at /docs/international covers the standard and country-specific dial rules (for example, the US and Canada 11-digit form, or dropping the leading 0 on UK and Australian numbers).

Numbers that ring to voicemail, mobile handsets, or VoIP endpoints without fax support produce a fax.failed event. The error catalog lists every code the API returns and the action to take on each.

Same feature set on every destination

International sending inherits the standard mintfax pipeline. Nothing on the destination side changes the API contract.

• Every destination the API accepts bills at the same flat per-page rate as domestic sending, with no per-country surcharge, no international premium, and no destination-based tier; the price table is on /pricing.
• The public carrier-error codes (busy, no_answer, line_quality, carrier_busy, network_error, timeout, internal_error, invalid_number, bad_destination, no_route) apply on every destination, and carrier identity is never exposed.
• Retryable codes consume an attempt against the per-fax max_attempts budget (default 3, configurable in the range 1-5), while terminal codes move straight to fax.failed regardless of attempts remaining.
• HMAC-SHA256 signed webhooks and Idempotency-Key behaviour on POST /faxes do not change with destination country.
• Sandbox magic numbers force the same outcomes for international destinations as for domestic ones, and sandbox never reaches the PSTN.

What mintfax does not do

• Outbound only. mintfax sends faxes; it does not receive faxes.
• No dedicated fax number. No inbound number is required to send, and mintfax does not provision one.

Get started

• Send an international fax - Country-specific dial rules, international number formatting, and destination-support guidance for the mintfax API.

Secondary reading

• Pricing - one flat per-page price applies to every destination.
• Compliance - encryption, retention, and portability answers.
• Error catalog - every public error code, its cause, and the next action.