By Alexey Spasskiy · Published November 10, 2026 · 8 min read
A team fax is a fax service where several people send and receive on a shared fax line, each signing in with their own login, and all of them see one history of what went out and what came in. The organization owns the number, the bill and the page allowance; people just get seats. In mFax Business that is a Business workspace with a Team fax line, an Owner, Members and one shared Received list.
Below: how multi-user faxing works, what it costs and what to check before you choose. One note: "team fax" here means a fax line shared by a group of people. It is not the same as faxing from Microsoft Teams, which has its own Microsoft Teams fax guide.
What Is a Team Fax?
A team fax replaces the shared office fax machine with a shared online fax line. Everyone who used to walk to the machine now sends from their own screen, and incoming faxes land in a list the whole office can see instead of a tray by the printer.
The difference from a single-user account is who owns what:
- The number belongs to the organization, not to the person who signed up. If someone leaves, the line stays.
- People get seats. Each seat is one person with their own login.
- History is shared. A fax sent by the front desk is visible to the office manager without forwarding anything.
- One bill and one page allowance cover the whole team.
Many offices that need a team fax line are small: a solo practice, a small clinic, a billing office. For them, "team" mostly means the fax line is in the practice's name, with room to add a colleague later.
How Multi-User Faxing Works
Multi-user faxing rests on six parts: a shared line, seats and roles, a shared history, per-person logins, email-to-fax for each member, and a shared page allowance. Here is what each one does and how mFax Business handles it.
A shared fax line
Everyone in the workspace sends from the team fax line and receives on it. In mFax Business, a Business workspace has a Team fax line: every member sends from that number and sees every incoming fax in the shared Received list. Nothing lands in personal accounts.
Already have a fax number your clients know? A Business workspace can port it in for free under Settings › Team fax line › Move it to mFax; most transfers finish within 7 business days. The details are in our fax number porting guide.
Seats and roles
Seats decide how many people can be in the workspace; roles decide what they can manage. mFax Business has two roles:
| Role | What they do |
|---|---|
| Owner | Created the workspace. Manages billing, invitations, the fax line and the BAA |
| Member | Sends and receives on the shared line |
The plan sets the number of seats. To add someone, the Owner opens Settings › Team, chooses Invite member and enters their email address. Once they accept, they see the shared fax line and history. Pending invitations are listed there and can be cancelled. When the seats are full, Invite member says so, and more seats can be added under Settings › Plan.
One shared history
A shared history means nobody has to ask "did that fax go out?" Everyone with a seat sees what the practice sent and received. A fax that left from the front desk shows its status to the person in the back office too: Delivered once the receiving machine confirms the transmission, or Failed with the reason, such as Recipient busy or No fax tone.
People switch between their personal and Business workspaces with the switcher in the lower-left corner of the app. Faxes and billing belong to the workspace you are in, so a personal fax never mixes into the practice's list.
On retention, mFax's support answer says sent faxes stay in history until someone deletes them, with no automatic expiry, and a deleted fax cannot be recovered.
Per-person logins and an audit trail
Every teammate signs in with their own login. That is the line on the mFax Business page, and it matters more than it sounds. A shared password on a shared machine tells you nothing about who sent what. Separate logins give each person their own access, and mFax Business keeps audit logs.
Sign-in has no password to share in the first place: each person gets a one-time code to their own email. Members can work from whatever device suits them. The front desk can use Windows, the exam room an iPad and billing a phone, all on the same shared list.
Email-to-fax for every member
Each member can fax from their own email client. In mFax Business, every member of the organization can send from Outlook, Gmail or Apple Mail by addressing a message to the fax number at send.mfax.to, for example 12125550147@send.mfax.to. The address digits are the country code and number, with no +, spaces or dashes.
The email address a person signs in to mFax with is authorized automatically. To let a colleague fax by email, invite them to the organization; mail from any other address is not faxed. The sender gets a status email when the fax is delivered or fails, and the fax appears in the organization's history and audit trail like any other send. The full walkthrough is in our guide to faxing through email.
A shared page allowance
The team draws on one pool of pages, not one pool per person. An mFax Business plan carries the page allowance chosen at setup, sold in packs of 100 and shared by every seat. Settings › Plan shows what this period has used, under Seats and Pages.
Three details are worth knowing before the first busy month:
- The allowance resets on the plan's anniversary date, not on the 1st. A plan started on the 15th renews on the 15th.
- When it runs out, further faxes are refused, not charged extra. There are no overage charges.
- More pages can be added under Settings › Plan, and they apply at once.
How to Set Up a Team Fax Line in mFax Business
Setting up takes a few minutes in a browser. The apps sign you in; they don't sign you up.
Create the organization
Go to mFax Business, choose Get started and type the practice's name. That, and a five-digit code sent to your email, is the whole form. Pick your seats and pages with the calculator.
Get or bring the number
The workspace comes with its Team fax line. Already have a number your clients know? Move it under Settings › Team fax line › Move it to mFax; porting is free.
Sign the BAA if you handle PHI
The Owner opens Settings › Business Associate Agreement › Review & sign. Both sides sign electronically, and the row shows Signed with the date.
Invite your team
Open Settings › Team, choose Invite member and enter each person's email. Once they accept, they see the Team fax line and the shared history.
What Does a Team Fax Cost?
Team fax pricing is either per seat and per page, or a fixed tier with a set number of users. mFax Business is the first kind: $3 per seat a month plus $4 per 100 pages a month, with 20% off annual billing. The calculator on mfax.to/business has two sliders, seats from 1 to 35 and pages from 200 to 5,000, and there are no named tiers.
Some worked examples of that formula:
| Team | Seats | Pages/mo | Monthly billing | Annual billing |
|---|---|---|---|---|
| Solo practice | 1 | 200 | ~$11/mo | ~$9/mo |
| Small team | 3 | 500 | ~$29/mo | ~$23/mo |
| Five-person office | 5 | 500 | ~$35/mo | ~$28/mo |
| Office | 5 | 1,000 | ~$55/mo | ~$44/mo |
Every plan includes the web, mobile and desktop apps, email-to-fax, API access and a signed BAA. A one-seat office pays for one seat, and adding a second person later is a slider move, not a plan change. For a wider look at plans for small offices, see our best fax service for small business roundup.
What to Check When Choosing a Team Fax Service
Check how a service handles seats, the shared number, incoming copies and compliance before you compare prices.
| Criterion | Why it matters | Question to ask |
|---|---|---|
| Users included | Fixed tiers often cap users per plan | How many people are included, and what does one more cost? |
| Team fax line | Clients and payers need a line that isn't tied to one person | Can every member send and receive on the team's line? |
| Incoming copies | Some services copy each fax to every assigned user | Does a fax received by a shared number use pages once or per person? |
| Shared history | Stops "did it go out?" questions | Does everyone see sent and received faxes in one list? |
| Own logins | Ties every fax to a person | Does each person sign in separately? |
| BAA | Required if PHI is involved | Is a signed BAA on the plan you are buying, or only a higher one? |
| Email-to-fax | Lets people fax from Outlook or Gmail | Can every member send by email, or only the account holder? |
| Overage | Busy months happen | Are extra pages charged, or refused? |
That "incoming copies" row is not hypothetical. Fax.Plus's help center explains that when one number is assigned to several members, each assigned member gets their own copy of every incoming fax, and each copy uses plan pages or credits (Fax.Plus help center, read on 2026-11-13).
How team plans compare
Here is how a few team plans are priced, from each provider's own pricing page as listed on 2026-11-03:
| Service (plan) | Price | Users | Pages/mo | BAA |
|---|---|---|---|---|
| mFax Business | $3/seat + $4 per 100 pages /mo, −20% annual; from about $9/mo | 1–35 seats, your choice | 200–5,000, your choice | Signed BAA on every plan |
| eFax Business | $39.99/mo monthly, $33.33/mo annual | 5 user licences, +$10/mo per extra user | 500 | Signed BAA included |
| Fax.Plus Business | $34.99/mo monthly, $27.99/mo annual | 5 members | 1,000 | Not on Business; HIPAA and BAA only on Enterprise ($99.99/mo, $79.99/mo annual) |
| iFax Pro | $39.99/mo monthly, $33.33/mo annual | 1 user licence included; extra licences $19.99/user/mo for the first three, less in volume | 1,000 | HIPAA listed on the plan |
Fixed tiers suit a team that matches them exactly. A five-person office sending 500 pages fits eFax Business neatly. A two-person office still pays for five licences on eFax Business, and on iFax only the Pro plan takes more than one user licence.
For a broader comparison of desktop and web tools, see our guide to business fax software.
Team Fax and HIPAA
A team fax line that carries patient information needs a signed BAA and a way to tell users apart. The HIPAA Security Rule lists unique user identification and audit controls among its technical safeguards (45 CFR 164.312). A shared password on a shared machine meets neither.
mFax Business includes a signed BAA on every plan at no extra cost, with AES-256 at rest, TLS 1.2+ in transit, PHI stored and processed in the US, and audit logs. Each teammate's own login is what makes the audit trail mean something.
When members fax by email, keep PHI in the attachment rather than the subject line or body: the BAA covers the fax service, not your own mailbox. The full checklist is in our HIPAA-compliant fax guide, and the contract itself is covered in BAA for fax service.
Do You Need a Team Fax If You Work Alone?
Usually you need a business fax line, not a team. The things a solo practice cares about are a number in the practice's name, a BAA its privacy officer accepts, and a history that survives a lost phone. A one-seat mFax Business workspace gives all three, from about $9/mo billed annually.
The team parts are there when you need them. When a receptionist or a billing assistant joins, the Owner invites them, and they see the same line and the same history the same day. Until then you pay for one seat. Our guide to a fax number for business covers how to choose and set up the number itself.
Get a Team Fax Line
A team fax gives your office a shared fax line, a login for each person, one history everyone can check and one page allowance to watch. mFax Business puts all of it in a workspace that runs on web, iPhone and iPad, Mac, Android and Windows, with email-to-fax for every member, a signed BAA and API access on every plan. Build your own plan with the seats and pages you need, from about $9/mo.