Best Flex Email-to-Fax Alternatives in 2026

Updated October 2026

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

1
Dropbox Fax (formerly HelloFax) Free plan Web Free7.9
Flex Email-to-Fax vs Dropbox Fax (formerly HelloFax)
2
OTG Networks vFax AndroidiOSMacWebWin $15/mo7.9
Flex Email-to-Fax vs OTG Networks vFax
3
FAX.PLUS Free plan AndroidiOSWeb $6.99/mo7.7
Flex Email-to-Fax vs FAX.PLUS
4
FaxTerra Free plan AndroidiOSWeb $1.99/mo7.6
Flex Email-to-Fax vs FaxTerra
5
GTC Cloud-Fax Free trial apiWeb 7.5
Flex Email-to-Fax vs GTC Cloud-Fax
6
Browserfax Free plan Web $4/mo7.4
Flex Email-to-Fax vs Browserfax
7
GotFreeFax Free plan AndroidapiiOSWeb $1.25/mo7.4
Flex Email-to-Fax vs GotFreeFax
8
FaxSalad Free plan AndroidiOSWeb $0.03/mo7.3
Flex Email-to-Fax vs FaxSalad
9
FaxBurner Free plan AndroidiOSLinuxMacWin $14.95/mo7.2
Flex Email-to-Fax vs FaxBurner
10
ETHERFAX apiLinuxMacself-hostedWeb 7.0
Flex Email-to-Fax vs ETHERFAX
11
TELUS Cloud Fax AndroidapiiOSMacWeb $14.95/mo6.9
Flex Email-to-Fax vs TELUS Cloud Fax
12
eGoldFax AndroidiOSWebWin 6.9
Flex Email-to-Fax vs eGoldFax
13
OpenText Core Fax Management API api 6.8
Flex Email-to-Fax vs OpenText Core Fax Management API
14
WestFax AndroidapiextensioniOSMac $14.99/mo6.8
Flex Email-to-Fax vs WestFax
15
FaxBetter Free plan Web $9.95/mo6.8
Flex Email-to-Fax vs FaxBetter
16
MonFax Free plan Web €2.49/mo6.8
Flex Email-to-Fax vs MonFax
17
OVHcloud Fax WebWinMacLinux €0.99/mo6.7
Flex Email-to-Fax vs OVHcloud Fax
18
NTT Cloud Fax Web 6.7
Flex Email-to-Fax vs NTT Cloud Fax
19
FlatRateFax Virtual Fax Free trial WebWin 6.7
Flex Email-to-Fax vs FlatRateFax Virtual Fax
20
InterFAX Free trial AndroidapiiOSWebWin 6.6
Flex Email-to-Fax vs InterFAX

Flex Email-to-Fax alternatives compared

#	App	Score	Free plan	From	Runs on
1	Dropbox Fax (formerly HelloFax)	7.9	Free plan	Free	Web
2	OTG Networks vFax	7.9		$15/mo	Android, iOS, Mac, Web, Windows
3	FAX.PLUS	7.7	Free plan	$6.99/mo	Android, iOS, Web
4	FaxTerra	7.6	Free plan	$1.99/mo	Android, iOS, Web
5	GTC Cloud-Fax	7.5			API, Web
6	Browserfax	7.4	Free plan	$4/mo	Web
7	GotFreeFax	7.4	Free plan	$1.25/mo	Android, API, iOS, Web
8	FaxSalad	7.3	Free plan	$0.03/mo	Android, iOS, Web
9	FaxBurner	7.2	Free plan	$14.95/mo	Android, iOS, Linux, Mac, Windows
10	ETHERFAX	7.0			API, Linux, Mac, self-hosted, Web, Windows
11	TELUS Cloud Fax	6.9	No	$14.95/mo	Android, API, iOS, Mac, Web, Windows
12	eGoldFax	6.9			Android, iOS, Web, Windows
13	OpenText Core Fax Management API	6.8			API
14	WestFax	6.8	No	$14.99/mo	Android, API, Browser, iOS, Mac, Web, Windows
15	FaxBetter	6.8	Free plan	$9.95/mo	Web
16	MonFax	6.8	Free plan	€2.49/mo	Web
17	OVHcloud Fax	6.7	No	€0.99/mo	Web, Windows, Mac, Linux
18	NTT Cloud Fax	6.7			Web
19	FlatRateFax Virtual Fax	6.7			Web, Windows
20	InterFAX	6.6			Android, API, iOS, Web, Windows

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Questions about Flex Email-to-Fax alternatives

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

Dropbox Fax (formerly HelloFax), number 1 in online fax services with a score of 7.9 out of 10. The others here: OTG Networks vFax, FAX.PLUS, FaxTerra 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. 9 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.