Communication
Best Fax APIs in 2026
eFax leads this list of 26 (9.3/10). FaxCore is next (9.0/10), and FAX.PLUS is the highest-placed option with a free plan (9.0/10). Fax APIs let software send and receive faxes through a web or application interface. This list helps teams compare fax services before adding one to a product or workflow.
- 01
eFax From $18.99/mo Free trial Web · Windows · macOS · iOS9.3 Visit Specs - 02
FaxCore From $60/mo Free trial Web · Windows · API · Self-hosted9.0 Visit Specs - 03
FAX.PLUS FAX.PLUS suits individuals or teams that need to send and receive faxes across web, desktop and mobile channels.
From $6.99/mo Free plan Web · iOS · Android9.0 Visit Specs - 04 FAXAGE
FAXAGE suits organizations needing fax by email, web, mobile, or API, including teams with compliance requirements.
From $3.49/mo Web · Windows · iOS · Android8.7 Visit Specs - 05 ETHERFAX
ETHERFAX is intended for healthcare, U.S.
Web · Windows · macOS · Linux8.4 Visit Specs - 06 Documo Fax API From $25/mo Free trial Web · API8.3 Visit Specs
- 07
Faxxing From $10/mo Free plan Web · API8.3 Visit Specs - 08
Concord Fax API Web · API8.2 Visit Specs - 09 Faxsuite REST API From €9.90/mo Free trial Web · API8.1 Visit Specs
- 10
SRFax From $12.60/mo Web · Windows · macOS · iOS8.1 Visit Specs - 11
WestFax WestFax suits individuals or teams that need inbound faxing across desktop and mobile platforms.
From $14.99/mo Web · Windows · macOS · iOS8.1 Visit Specs - 12 GoFax REST API Web · Windows · macOS · iOS8.0 Visit Specs
- 13
HumbleFax From $10/mo Web · Android8.0 Visit Specs - 14
Openfax Cloud Fax API From $0.03/mo Free trial Web · API7.9 Visit Specs - 15 LuzardoFax API From $25/mo Free trial Web · API7.8 Visit Specs
- 16 Fax² API Free trial Web · API7.7 Visit Specs
- 17
Notifyre From $4.90/mo Web · iOS · Android · API7.7 Visit Specs - 18 Innoport Programmable Fax API From $8.95/mo Web · API7.6 Visit Specs
- 19
Phaxio From $2/mo Free trial Web · API7.6 Visit Specs - 20 Send FAX Mail API From $12.99/mo Free trial Web · API7.5 Visit Specs
- 21 mintfax From $0.04/mo Web · API7.3 Visit Specs
- 22 Sinch Fax API
It suits startups and established companies that need API-based inbound and outbound faxing, including organizations in healthcare, legal, finance, insurance, or real estate.
Web · API7.2 Visit Specs - 23 OpenText Core Fax Management API API7.0 Visit Specs
- 24 SingleFax API From $6.58/mo Web · API7.0 Visit Specs
- 25 SendFax.me Developer API Web5.3 Visit Specs
Check the available platform, inbound and outbound fax support, delivery tracking, webhook events, API protocol and included pages. Review pricing details for a free plan, a trial or a paid starting point.