Best Flex Email-to-Fax Alternatives in 2026

Updated October 2026

20 platforms from online fax services ranked against Flex Email-to-Fax on the same published basis.

1
OpenText Core Fax Management API api 8.3
Flex Email-to-Fax vs OpenText Core Fax Management API
2
ETHERFAX apiLinuxMacself-hostedWeb 8.3
Flex Email-to-Fax vs ETHERFAX
3
FaxCore apiself-hostedWebWin 8.0
Flex Email-to-Fax vs FaxCore
4
FAXAGE AndroidapiiOSWebWin $3.49/mo8.0
Flex Email-to-Fax vs FAXAGE
5
Abbax Cloud Fax AndroidapiiOSLinuxMac $24.99/mo7.8
Flex Email-to-Fax vs Abbax Cloud Fax
6
SecurelyFax AndroidapiiOSWeb $0.07/mo7.8
Flex Email-to-Fax vs SecurelyFax
7
Dropbox Fax (formerly HelloFax) Free plan Web Free7.5
Flex Email-to-Fax vs Dropbox Fax (formerly HelloFax)
8
Openfax Cloud Fax API Free trial apiWeb $0.03/mo7.3
Flex Email-to-Fax vs Openfax Cloud Fax API
9
FAX.PLUS Free plan AndroidiOSWeb $6.99/mo7.1
Flex Email-to-Fax vs FAX.PLUS
10
SendFax.to AndroidapiiOSWeb 7.1
Flex Email-to-Fax vs SendFax.to
11
GoFax REST API AndroidapiiOSMacWeb 7.1
Flex Email-to-Fax vs GoFax REST API
12
Browserfax Free plan Web $4/mo7.0
Flex Email-to-Fax vs Browserfax
13
FaxTerra Free plan AndroidiOSWeb $1.99/mo7.0
Flex Email-to-Fax vs FaxTerra
14
OVHcloud Fax WebWinMacLinux €0.99/mo6.9
Flex Email-to-Fax vs OVHcloud Fax
15
TELUS Cloud Fax AndroidiOSMacWebWin $14.95/mo6.8
Flex Email-to-Fax vs TELUS Cloud Fax
16
NTT Cloud Fax Web 6.8
Flex Email-to-Fax vs NTT Cloud Fax
17
WestFax WebWiniOSAndroidMac $14.99/mo6.7
Flex Email-to-Fax vs WestFax
18
eGoldFax AndroidiOSWebWin 6.7
Flex Email-to-Fax vs eGoldFax
19
GotFreeFax Free plan Web $1.25/mo6.7
Flex Email-to-Fax vs GotFreeFax
20
FaxSalad Free plan AndroidiOSWeb $0.03/mo6.7
Flex Email-to-Fax vs FaxSalad

Flex Email-to-Fax alternatives compared

#	Platform	Score	Free plan	From	Runs on
1	OpenText Core Fax Management API	8.3			API
2	ETHERFAX	8.3			API, Linux, Mac, self-hosted, Web, Windows
3	FaxCore	8.0			API, self-hosted, Web, Windows
4	FAXAGE	8.0	No	$3.49/mo	Android, API, iOS, Web, Windows
5	Abbax Cloud Fax	7.8	No	$24.99/mo	Android, API, iOS, Linux, Mac, Web, Windows
6	SecurelyFax	7.8		$0.07/mo	Android, API, iOS, Web
7	Dropbox Fax (formerly HelloFax)	7.5	Free plan	Free	Web
8	Openfax Cloud Fax API	7.3	No	$0.03/mo	API, Web
9	FAX.PLUS	7.1	Free plan	$6.99/mo	Android, iOS, Web
10	SendFax.to	7.1	No		Android, API, iOS, Web
11	GoFax REST API	7.1	No		Android, API, iOS, Mac, Web, Windows
12	Browserfax	7.0	Free plan	$4/mo	Web
13	FaxTerra	7.0	Free plan	$1.99/mo	Android, iOS, Web
14	OVHcloud Fax	6.9	No	€0.99/mo	Web, Windows, Mac, Linux
15	TELUS Cloud Fax	6.8	No	$14.95/mo	Android, iOS, Mac, Web, Windows
16	NTT Cloud Fax	6.8			Web
17	WestFax	6.7	No	$14.99/mo	Web, Windows, iOS, Android, Mac
18	eGoldFax	6.7			Android, iOS, Web, Windows
19	GotFreeFax	6.7	Free plan	$1.25/mo	Web
20	FaxSalad	6.7	Free plan	$0.03/mo	Android, iOS, Web

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Questions about Flex Email-to-Fax alternatives

What is the best alternative to Flex Email-to-Fax?

OpenText Core Fax Management API, number 1 in online fax services with a score of 8.3 out of 10. The others here: ETHERFAX, FaxCore, FAXAGE and 16 more.

What is the best free alternative to Flex Email-to-Fax?

Dropbox Fax (formerly HelloFax) is the best-ranked alternative with a free plan. 6 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.