Online fax for small and midsize business

Your fax line, working in ninety seconds.

Send and receive faxes from your browser, with your whole team on the same number. Pick a number, invite your staff, drag in a PDF — that’s setup. No fax machine, no phone line, no sales call.

Thirty days, money back. From $12 a month, with a signed BAA at no cost and free porting in both directions.

Transmission reportSignal Fax
To
(415) 555-0192
From
(206) 555-0148
Document
referral.pdf
Pages
4
Started
09:41:06
Duration
0:22
Resolution
Fine
ResultOK — 4 of 4 pages
Compliance
HIPAA-ready, BAA free
Encryption
TLS 1.3 · AES-256
Porting
Free, in and out
Setup
About 90 seconds, self-serve

Three steps. Ninety seconds. Then you’re faxing.

01

Pick your number

Choose a local or toll-free number in any US or Canadian area code, or keep the one you already have. Porting is free and we handle the paperwork.

02

Add your team

Invite colleagues by email. Give each person their own number, or share one. Group them by department and set who can send and who can only view.

03

Send your first fax

Drag a PDF into the browser, pick a recipient from your contacts, attach a cover sheet, and send. Broadcast to a whole list at once, or schedule it for later.

There is no software to install, no fax machine, no dedicated phone line, and no onboarding call unless you want one.

Don’t take our word for the quality. Fax yourself a page.

Enter your own fax number and we send a sample page to it. No account, no card, usually under 30 seconds. We only ever send to the number you type here.

One test per number. We don’t call you about it unless you ask.

Everything a practice actually needs on a fax line.

Send from your browser

Drag in a PDF, Word file, or image and we convert it. Send to one number or broadcast to a whole list, now or on a schedule you set.

Receive straight into your inbox

Incoming faxes arrive as PDFs with an email notification the moment they land, and can save themselves into a Google Drive folder automatically.

Real team accounts

Per-user direct numbers, department groups, roles that separate sending from viewing, and an audit log of who sent what to whom.

Cover sheets that match your practice

Branded templates with your logo and contact details. Set a default per department so nobody rebuilds one by hand.

Your number, your archive

Port in free, port out free — any time, no notice period, no penalty. Your fax history stays exportable, including after you cancel.

Built to sit next to your EHR

Send faxes and pull eligibility, claims and remittances through our clearinghouse integration, so referrals and billing run off the same line.

See what Signal Fax connects to →

Switching providers

Keep your old service until your new number is proven.

You don’t have to switch in one move. We give you a working Signal Fax number today and start the port on your existing one. Until that port completes you run both — your old provider keeps receiving, we handle everything new — and we don’t bill you for the overlap. Once your number lands here and you’ve sent a test through it, cancel the old account.

3–10
business days, typical port
$0
for the overlapping month
0
minutes your line is dark

Coming from HumbleFax, eFax, or a machine in the corner?

See every comparison →
Signal Fax
HumbleFax
Signed BAA
Free, self-serve, every plan
Not offered as a standard path
Page allowance in writing
250 / 2,000 / 10,000
“Unlimited,” with a right to move heavy users up a tier
Free port-out
Free, any time, no notice
30-day notice; $500 liquidated damages
Archive export after cancel
Export for 30 days
Access ends with the account
Refunds
Full refund inside 30 days
Stated as non-refundable

HumbleFax column drawn from their public site and terms as of August 2026. Verify before publishing; terms change.

Your fax number can be live before your next meeting.

Thirty days, money back — tell us inside 30 days and we refund everything you paid. Cancel after that and we refund the unused part of the month. You keep your archive export and your number either way.