How we make this list: we compare pricing pages, product documentation and public user reviews. Rankite is independent; if a vendor ever pays for a featured spot, that listing is clearly labeled Partner.
Key takeaways
- Fax.Plus ($6.99/month for 200 pages) and MyFax ($12/month) publish real prices; eFax, MetroFax, SRFax and CocoFax do not, so expect a quote or a signup flow to see numbers.
- If you fax for healthcare, legal or finance, HIPAA compliance decides the shortlist: Fax.Plus requires its Enterprise plan for a BAA, and SRFax is built for regulated offices.
- Already on RingCentral? Its built-in fax may be the cheapest option, since you are already paying for the phone system.
- Page limits matter more than the monthly fee. Count your inbound and outbound pages before choosing, because overage charges add up fast.
Quick comparison
| Tool | Best for | Starting price | Free plan |
|---|
 eFax | Businesses that want a well-known fax brand with mobile apps | See website | See website |
 Fax.Plus | Individuals and teams that want transparent per-page pricing | $6.99/month (Basic plan, 200 pages) | Yes (free plan with 10 pages total) |
 MyFax | Small offices that want a simple email-to-fax setup | $12/month (Home Office plan) | Free trial (14 days, per reviewers) |
 MetroFax | Businesses that want email-based faxing with US-based support | See website | No (no free plan advertised) |
 RingCentral Fax | RingCentral customers that need fax inside their phone system | See website (fax is bundled with RingEX plans) | See website |
 iFax | Mobile-first users who fax from phones and tablets | $12.49/month (200 pages, per the vendor's homepage) | Free trial (terms on website) |
 CocoFax | Occasional senders who want a simple web fax tool | See website | See website |
 SRFax | Healthcare and professional offices that need compliance-friendly faxing | See website | See website |
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
The best online fax software
Picture a medical office on a Tuesday morning. A specialist needs a signed referral, the patient is waiting, and the old fax machine in the corner has been blinking an error since Friday. This is the moment online fax software earns its keep: the referral goes out from a browser tab, the confirmation lands in an inbox, and nobody touches a toner cartridge. The eight services below all replace the machine, but they differ on price transparency, page allowances and compliance. Pick the one that matches how you actually fax.
#1
eFax
Best for: Businesses that want a well-known fax brand with mobile apps
Visit efax.com
Starting priceSee website
Free planSee website
eFax is the name most people have heard, and that recognition is the product. The service covers the standard set: a dedicated fax number, email-to-fax, a web portal and mobile apps, with Personal, Business and Corporate tiers aimed at different sizes. For a business that wants a safe, familiar choice and does not mind paying for the brand, it is the default.
The trade is transparency. eFax publishes no prices on its homepage, so you cannot compare it to Fax.Plus or MyFax without starting the signup process. Reviewers consistently describe it as pricier than the budget options. If the brand matters to your clients or your compliance checklist, get the quote. If it does not, the cheaper published-price options below do the same job.
What we like- One of the most recognized names in online fax
- Mobile apps for sending on the go
- Personal, Business and Corporate tiers for different sizes
Watch out for- No prices published on the site, so you enter a signup flow to see numbers
- The brand premium shows in what reviewers report paying
#2
Fax.Plus
Best for: Individuals and teams that want transparent per-page pricing
Visit fax.plus
Starting price$6.99/month (Basic plan, 200 pages)
Free planYes (free plan with 10 pages total)
If you want the price on the website before you sign up, start with Fax.Plus. Basic at $6.99 per month includes 200 pages, Premium at $13.99 covers 500 pages, and Business at $27.99 covers 1,000 pages, with per-page overage rates published for each tier. The free plan gives you 10 pages total to test with. Everything is on the pricing page, which is more than most competitors manage.
Two details matter. First, the free plan is a trial in all but name: 10 pages total, not per month, so it is for testing, not for ongoing use. Second, HIPAA compliance with a signed BAA is Enterprise-only, which starts much higher. For a clinic, that changes the math completely. For everyone else, Fax.Plus is the value pick with the clearest pricing on this list.
What we like- Published pricing with clear page allowances
- A genuinely free plan for occasional use
- HIPAA compliance available on Enterprise with a BAA
Watch out for- HIPAA requires the top Enterprise tier
- The free plan's 10 pages are a lifetime total, not monthly
#3
MyFax
Best for: Small offices that want a simple email-to-fax setup
Visit myfax.com
Starting price$12/month (Home Office plan)
Free planFree trial (14 days, per reviewers)
MyFax keeps the pitch simple: a fax number, email-to-fax, and three plans. Home Office at $12 per month, Small Business at $25 and Power at $45, all with published page allowances on the vendor's pricing page. For a small office that faxes a predictable volume and wants as little new software as possible, the email workflow is the appeal: you send and receive faxes as email attachments.
The honest comparison is with Fax.Plus. MyFax costs more per month at the entry level and gives you fewer pages for it. What you get instead is simplicity and a vendor that has served small offices for years. If your volume fits the Home Office allowance and you value a no-surprises setup over squeezing the per-page cost, it is a solid pick. Heavy senders should price the Power tier against Fax.Plus Business.
What we like- Straightforward plans with published prices
- Email-to-fax that needs no new software
- A long track record in the small-office market
Watch out for- The entry plan is pricier per page than Fax.Plus
- Feature depth is thinner than the enterprise options
#4
MetroFax
Best for: Businesses that want email-based faxing with US-based support
Visit metrofax.com
Starting priceSee website
Free planNo (no free plan advertised)
MetroFax has been selling internet fax since before most of these competitors existed. The service does what you expect: a local or toll-free fax number, email-to-fax in both directions, a web portal and mobile access, with no activation fees or contracts according to the homepage. The vendor advertises additional pages at $0.03 each and US-based support around the clock.
The gap is pricing transparency. The homepage talks about affordability without showing a plan price, which makes it impossible to compare against Fax.Plus or MyFax on paper. If US-based phone support matters to you, that alone can justify the call to sales. Everyone else should get the quote first and stack it against the published-price options before deciding.
What we like- Send and receive by email, web or smartphone with no hardware
- Additional pages at $0.03 each, per the vendor's homepage
- US-based support available 24/7
Watch out for- No published plan prices, so you cannot compare without contacting sales
- The site leans on marketing claims over specifics
#5
RingCentral Fax
Best for: RingCentral customers that need fax inside their phone system
Visit ringcentral.com
Starting priceSee website (fax is bundled with RingEX plans)
Free planSee website
RingCentral Fax is not really a standalone product. It is a feature of RingCentral's business phone platform: users send and receive faxes from the same app and admin console that handles their calls and messages. For a company already paying for RingCentral, that makes it the cheapest fax option by default, since there is no second vendor, no second bill and no new system to learn.
For everyone else, it is a non-starter as a fax-only purchase. You would be buying a phone system to get a fax feature. RingCentral publishes no standalone fax price because there is not one. If you are already a customer, turn the feature on and skip this list. If you are not, compare the dedicated services above.
What we like- No separate fax vendor to manage if you already use RingCentral
- Fax shares the same admin console and user accounts
- Enterprise-grade reliability and support
Watch out for- Not a standalone product, so non-customers must buy the phone system
- No separate fax pricing to compare
#6
iFax
Best for: Mobile-first users who fax from phones and tablets
Visit ifaxapp.com
Starting price$12.49/month (200 pages, per the vendor's homepage)
Free planFree trial (terms on website)
iFax built its reputation on the phone in your pocket. The apps for iOS and Android handle scanning, sending and receiving, which suits field workers, real estate agents and anyone who faxes away from a desk. The vendor's homepage FAQ puts plans at $12.49 per month for 200 pages, in the same band as MyFax.
The trade-off is focus. iFax is a mobile product first, and buyers who live in a browser or need deep admin controls may find it thin. It is also not the pick for regulated industries: if you need a HIPAA BAA, look at Fax.Plus Enterprise or SRFax instead. For mobile-heavy, low-compliance faxing, the price is fair and the apps are the reason to choose it.
What we like- Built around mobile apps for iOS and Android
- Plans start at $12.49 per month for 200 pages, per the vendor's own FAQ
- No hardware or phone line needed
Watch out for- Desktop and web experience is secondary to mobile
- Compliance options are thinner than the healthcare-focused picks
#7
CocoFax
Best for: Occasional senders who want a simple web fax tool
Visit cocofax.com
Starting priceSee website
Free planSee website
Some buyers only fax a few pages a month and resent paying for a subscription. CocoFax targets that end of the market: a simple web tool for sending faxes without a machine, an app install or a learning curve. For the occasional sender who needs to get a document out today, simplicity is the whole pitch.
The caveat is verification. We could not confirm current pricing or trial terms on the vendor's site, so treat the quote or signup flow as the source of truth and compare it against Fax.Plus's free plan and $6.99 entry tier before committing. Light users should also check the per-fax cost math: a cheap subscription beats pay-per-fax only if you actually fax every month.
What we like- Simple web-based sending with no hardware
- Positioned for light and occasional use
- Quick setup for one-off fax needs
Watch out for- No published pricing found on the vendor's site
- Thinner feature set and support story than the established brands
#8
SRFax
Best for: Healthcare and professional offices that need compliance-friendly faxing
Visit srfax.com
Starting priceSee website
Free planSee website
SRFax is the specialist pick for offices where compliance is not optional. The service is positioned for healthcare, legal and financial users, with HIPAA-friendly handling and the audit-friendly workflow those offices need. If your faxing involves patient records or client files, a vendor that talks compliance natively saves you a due-diligence headache.
The price of specialization is opacity and simplicity. The homepage publishes no plan prices, so you will need a quote, and the feature set is narrower than eFax or Fax.Plus. For a clinic choosing between SRFax and Fax.Plus Enterprise, the decision comes down to the quoted price and whether you need the broader platform features. Get both quotes before deciding.
What we like- Built with healthcare and regulated offices in mind
- HIPAA-friendly positioning with compliance features
- Straightforward web faxing without hardware
Watch out for- No prices published on the homepage
- The interface and feature set trail the bigger brands
What to check before you pick an online fax service
Start with volume, because page allowances decide the real price. Add up a typical month of inbound and outbound pages, then check what each plan includes and what overage costs. A $6.99 plan with 200 pages beats a $12 plan with 100 pages if you send 150 pages a month, and overage fees punish guesswork. If your volume swings, favor the vendor with the cheapest overage rate, not the cheapest base price.
Then check the three details buyers forget. First, number porting: if you have an existing fax number that clients know, confirm the vendor can port it before you sign, since reprinting stationery and notifying contacts is a hidden cost. Second, delivery confirmations and archiving: make sure sent faxes generate confirmations and stored copies you can retrieve later. Third, the contract: month-to-month beats annual when you are still learning your volume, even if the annual price looks better.
HIPAA, page limits and number porting: the fine print that matters
Healthcare buyers face one non-negotiable: a signed Business Associate Agreement. Fax.Plus offers HIPAA compliance with a BAA, but only on its Enterprise plan, which costs several times the entry tier. SRFax positions itself for regulated offices from the start. eFax and others offer compliance tiers too, but the BAA is never on the cheapest plan. If you handle protected health information, shortlist on the BAA first and compare prices second.
Page limits deserve the same scrutiny. Most plans count inbound and outbound pages together against one allowance, and some count a failed transmission as pages used. Ask each vendor exactly what counts. Number porting is the third trap: it usually works, but it can take days to weeks, and some vendors charge for it. Start the port before you cancel the old service, or you will have a gap with no working fax number.
How we chose
We started with the categories buyers search: online fax software, internet fax service, email to fax and HIPAA compliant fax. For each candidate we opened the vendor's own website and pricing page, checked prices against public reviews on G2 and Capterra and practitioner discussion on Reddit, and compared features, page allowances and compliance options. Where a price could not be verified on the vendor's page we wrote "See website" rather than guessing.
Frequently asked questions
Is online fax secure?
Reputable services encrypt faxes in transit and at rest, which is more secure than a paper fax sitting on a shared machine. For regulated industries, look for explicit HIPAA compliance with a signed BAA, not just encryption claims. Fax.Plus offers this on Enterprise; SRFax is built for it.
Do I need a HIPAA-compliant fax service?
If you fax protected health information, yes, and you need a signed Business Associate Agreement with the vendor. The BAA is the legal document that matters, not marketing language about encryption. Confirm the BAA is available on the specific plan you buy, since vendors gate it to higher tiers.
Can I keep my existing fax number?
Usually yes. Most services support porting an existing fax or voice number, though it can take days to weeks and some vendors charge a fee. Confirm porting support and timing before you sign, and do not cancel your old service until the port completes.
How many pages do I actually need per month?
Count both directions: every inbound page and every outbound page typically counts against your allowance. A small office usually lands between 100 and 500 pages monthly. Check your last few months of the old machine's logs if you have them, then buy the plan whose allowance covers your busiest month.
Can I fax from my phone?
Yes. eFax, iFax, Fax.Plus and most others offer iOS and Android apps with document scanning. iFax is the most mobile-focused of the group. If you fax mostly from the field, prioritize the app reviews over the web portal features.
What happens if I exceed my page limit?
You pay overage fees, which is why the per-page overage rate matters as much as the base price. Fax.Plus publishes overage rates per tier ($0.10, $0.07 and $0.05 per extra page on Basic, Premium and Business). For other vendors, ask for the overage rate in writing before you exceed the allowance and learn it from the invoice.
Sources we checked (10)
- https://www.fax.plus/pricing
- https://www.myfax.com/pricing
- https://www.ifaxapp.com/
- https://www.metrofax.com/
- https://www.srfax.com/
- https://efax.com/
- https://cocofax.com
- http://www.ringcentral.com/fax
- https://www.g2.com/categories/fax
- https://www.capterra.com/fax-software/
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has spent more than a decade helping SaaS and e-commerce brands grow through search. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.