Originally published at ictfax.com
ICTFax and eFax solve the same core problem -- sending and receiving faxes without a physical fax machine -- but from entirely different positions. eFax is a cloud fax service with a monthly subscription, no server to manage, and a fax number assigned on signup. ICTFax is an open source fax server that runs on your infrastructure, costs nothing in software licenses, and gives you complete control over your fax data and architecture.
The short answer: eFax is faster to start and requires no technical setup. ICTFax wins on total cost for moderate-to-high volumes, HIPAA compliance on your own terms, and multi-tenant capability for service providers. Which fits you depends almost entirely on volume, technical resources, and data control requirements.
FeatureICTFaxeFax
Open sourceYes (FreeSWITCH-based)No
Self-hostedYesNo (cloud only)
PricingFree software + hosting + SIP trunkFrom $18.95/month (150 pages)
Overage chargesNone (SIP trunk per-minute)$0.10–$0.20 per extra page
HIPAA complianceSelf-managed on your serverBAA available (paid plans)
Multi-tenant / white-labelYesNo
Fax broadcasting (bulk fax)Built-in campaign toolNot supported
Email-to-faxYesYes
Fax APIREST API includedAPI on higher plans
Setup timeHours (Linux server)Minutes (cloud signup)
Pricing deserves a careful look. eFax's $18.95/month plan covers 150 pages -- that's fine for low-volume faxing. But healthcare offices, legal firms, and insurance companies often send and receive hundreds or thousands of pages monthly. At eFax's overage rate of $0.10-$0.20 per page, a practice sending 1,000 pages over the included 150 is looking at $85-$170 in overages every month on top of the subscription. ICTFax's cost is the server and SIP trunk -- both are flat, and a T.38 SIP trunk typically runs a fraction of a cent per page. For any organization above 300-400 pages/month, ICTFax's economics are significantly better.
Where ICTFax Wins
For businesses with meaningful fax volume -- healthcare, legal, financial services, insurance -- ICTFax's self-hosted model reduces per-page cost to near zero once the server is running. The FreeSWITCH-based architecture handles high concurrent fax volumes efficiently, which matters when you're processing hundreds of inbound referrals or orders simultaneously.
Data residency is the other major advantage. When you send a fax through eFax, that document transits and is stored on eFax's cloud infrastructure. For industries where document confidentiality is paramount -- a medical practice sending patient referrals, a law firm sending discovery documents, a financial advisor sending account documents -- having fax data on your own server under your own access controls is meaningfully different from trusting a third-party cloud. ICTFax's self-hosted model means your fax data never leaves your infrastructure.
Fax broadcasting is a capability eFax simply doesn't offer. ICTFax includes a fax campaign module for sending bulk faxes to contact lists -- used by healthcare networks sending patient notifications, insurance companies distributing policy updates, or businesses running fax-based marketing. If you need to send the same document to hundreds or thousands of recipients, ICTFax has that built in. eFax is a single-send service.
Multi-tenant capability sets ICTFax apart for fax service providers and MSPs. A single ICTFax installation can serve multiple clients with complete isolation -- each client has their own fax numbers, inbox, and billing. The white-label configuration lets you brand the platform under your own name or each client's name. eFax has no equivalent for resellers or service providers.
Where eFax Wins
eFax's real advantage is simplicity. Sign up, get a fax number, send and receive faxes from your email -- you're done. No server, no SIP trunk, no Linux admin. For a small business owner who sends 20 faxes a month and wants a fax number without any technical overhead, eFax is genuinely the right answer. The setup experience takes minutes, not hours.
eFax also provides local and toll-free fax numbers in many countries without the carrier relationship management that ICTFax requires. If you need a fax number in a specific area code in multiple countries and you don't want to research SIP trunk providers with local number availability, eFax handles that number acquisition for you.
For HIPAA compliance, eFax does offer a Business Associate Agreement on its corporate plans -- a requirement for healthcare covered entities. That's legitimate and removes the need for your team to manage the compliance configuration yourself. Self-hosted ICTFax is HIPAA-capable, but HIPAA compliance on a self-hosted system means your team owns the access controls, encryption configuration, and audit logging. That's appropriate for organizations with IT staff; it's more than a solo practitioner wants to manage.
When to Choose ICTFax
ICTFax is the right fit if your fax volume is above 400-500 pages per month and the per-page savings matter, if you're in a regulated industry with data residency requirements and want fax data on your own infrastructure, if you need fax broadcasting for bulk sends, or if you're a service provider offering fax service to multiple clients. Healthcare networks, legal firms with document-heavy workflows, insurance companies, and VoIP service providers with fax offerings are the natural fit.
A practical example: a medical practice sending 500 outbound referral faxes monthly would pay eFax around $53/month in overages on top of the base subscription. The same practice running ICTFax on a $40/month server with a T.38 SIP trunk pays under $50/month total -- and owns the data. After 12 months the savings cover the setup time comfortably.
When to Choose eFax
eFax is the better choice for low-volume faxing (under 200-300 pages/month), for solo practitioners or small businesses that want a fax number without any technical management, and for teams that need international fax numbers with minimal setup. If fax is a minor part of your workflow and you'd rather pay a monthly fee than spend time on server administration, eFax is the pragmatic choice.
Frequently Asked Questions
Is ICTFax HIPAA compliant?
ICTFax can be deployed in a HIPAA-compliant configuration -- encryption in transit (TLS/SRTP), access controls, and audit logging are all achievable on a self-hosted server. However, HIPAA compliance on a self-hosted system is your team's responsibility. You configure and maintain the controls; you sign your own Business Associate Agreements with partners. eFax offers a BAA as part of its service, which shifts some of that compliance responsibility to eFax. For organizations with IT staff, self-hosted ICTFax is viable; for solo practitioners, eFax's BAA-included service is simpler.
Can ICTFax send faxes via email like eFax?
Yes. ICTFax includes email-to-fax functionality -- you send an email to a configured address and ICTFax converts and transmits it as a fax. Inbound faxes can be delivered to email as PDF attachments. The email integration works with any mail client or server, the same as eFax's core functionality.
What are the actual running costs of ICTFax?
A typical ICTFax deployment runs $40-80/month for a Linux VPS depending on capacity, plus SIP trunk costs. A T.38-capable SIP trunk for fax typically charges per-minute (around $0.005-0.015/minute depending on the provider and destination). A fax page takes roughly 30-60 seconds to transmit, so per-page cost is well under a cent for domestic faxes. At 1,000 pages/month, total ICTFax running cost is usually $50-100/month. eFax at that volume would run $80-200/month including overages.
Does ICTFax have a REST API?
Yes, ICTFax includes a REST API for sending faxes programmatically, checking fax status, managing contacts, and retrieving received faxes. The API is useful for integrating fax sending into existing applications -- EHR systems, CRM platforms, document management systems. eFax offers API access on higher-tier corporate plans. ICTFax's API is included at no additional cost.
Can I keep my existing fax number if I switch to ICTFax?
Number porting depends on your SIP trunk provider. Most major SIP trunk providers support porting existing fax numbers (DIDs), though the porting process typically takes 2-4 weeks and varies by carrier. If you're currently using a physical fax line, porting to a SIP trunk is standard. If you're using an eFax number, check whether that number is portable -- some virtual fax numbers are not portable and you'd need to update contacts with a new number.
Is ICTFax difficult to install?
ICTFax requires a Linux server and familiarity with command-line administration. The installation guide covers the process step by step, and most installations complete within a few hours. You'll also need to configure a SIP trunk with a T.38-capable provider. It's not plug-and-play, but it's not complex either for anyone comfortable managing a Linux VPS. eFax requires no technical setup whatsoever.
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