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GET
Get Default Fax Settings

Authorizations

Authorization
string
header
required

API key as Bearer token. Use an account key (mfx_acct_...) for /account/* endpoints, and an environment key (mfx_test_... for sandbox, mfx_live_... for live) for /environment/*, /faxes, /webhooks, and /events.

Response

FaxSettingsResource

webhook_url
string<uri> | null
required

Default per-fax webhook URL override.

max_attempts
integer
required

Default attempt cap for faxes (1-5). See ADR-021.

Example:

3

csid
string | null
required

Default CSID for outbound faxes (max 20 chars).

page_size
enum<string> | null
required

Default page size for rendered content. PDF inputs pass through unchanged.

Available options:
letter,
legal,
a4,
b4
resolution
enum<string> | null
required

Default T.30 transmission resolution.

Available options:
standard,
fine
optimize_for
enum<string> | null
required

Default rasterizer optimization hint for non-PDF inputs.

Available options:
text,
photo
Last modified on May 21, 2026