For medical and dental offices

For medical and dental offices: the front desk writes the same eight emails all day

Confirm the appointment. Say what to bring. Chase the overdue recall. Explain what the insurer paid and what is left. Tell the patient the referral has gone and what happens next. Send the pre-visit instructions again, because the first email got lost. Between the phone and the waiting room, the office manager writes those eight emails on a loop, and every one of them has to be exactly right, because a wrong time or a wrong balance is a patient at the desk with a complaint.

MailTwin writes those emails from your notes. You type the facts, it writes the finished message in the practice's own words, and you read it and send it.

What that looks like on a Monday morning

Select the patient's message in Apple Mail, type what the reply needs to say, and MailTwin writes the complete email into the reply window — greeting, every point in full sentences; Mail appends the practice signature.

You type	You get
Tuesday 2:15 with Dr K, arrive ten minutes early, bring insurance card and current medication list, no fasting needed	An appointment confirmation with the time, the clinician, what to bring and the one instruction they will otherwise ring to ask about
hygiene recall overdue, next mornings free are the 4th and the 11th, reply or call to book	A recall email that is friendly rather than nagging and gives two concrete slots
referral sent to the specialist today, they contact the patient directly within two weeks, chase us if not, copy of the letter attached	The referral update that sets the timetable and tells the patient what to do if it slips
balance 140 after insurance, statement attached, pay online or at the next visit, payment plan available if that helps	A billing note that states the figure once, plainly, and offers the options without sounding like a collections letter

None of those is hard. That is the point. The afternoon goes on the thirty easy ones, not on anything difficult.

Patient information, and where it goes

Patient correspondence is not yours to hand to a third party, and that objection deserves an architectural answer rather than a privacy badge.

MailTwin has no server. There is no MailTwin account, and there is nowhere for your mail to be sent even if we wanted it. You choose the AI engine from nine. Three of them, Apple Intelligence on macOS 26 or later, Ollama, and a local OpenAI-compatible server (oMLX, LM Studio, llama.cpp), run on the Mac itself, so with those the message content stays on the Mac and is not transmitted. With a cloud provider, the request goes from your Mac straight to that provider under a key you supply and can revoke, together with a short sample of the account's own sent mail so the reply sounds like the practice. Voice learning reads sent mail locally and keeps its samples locally, under your own user account on that Mac.

MailTwin does not claim compliance with HIPAA or with any other health-privacy regime, and no software can make that claim for your practice on its own. Whether a cloud AI provider is an acceptable recipient of patient correspondence, and what agreements you would need with that provider first, is a question for your own compliance rules and the people who set them. If the answer is that patient material does not go to a cloud service, the on-device engines are a complete answer rather than a reduced version of the app. Everything on this page works with them.

Times, balances and the things a patient will hold you to

An appointment email with the wrong day in it is a no-show and an argument. When MailTwin rewrites a draft you have already written, a validator checks the result before it reaches you and rejects it if a number, a date, an amount, a link or an email address has changed. That runs every time. What it cannot do is judge whether a new sentence is true; it does not know the appointment book. Type 2:15 when the diary says 2:50 and you will get 2:15, well written. Reading the draft before it goes is still the job, and nothing sends without you.

The practice address and the named ones

The front desk answers from the practice's general address, and the practice manager, the clinicians and the billing person each have their own. Those do not read the same. MailTwin learns voice separately for every mail account, from that account's own sent mail, so the shared address keeps the practice register and a named address keeps its own. Nothing is shared between them, and switching mailbox switches the voice.

The insurer thread

A disputed claim runs to forty messages between the patient, the insurer and the office. MailTwin summarizes the thread and pulls out what is still owed and by whom, which is the part you actually need before writing the next email. It also improves a draft you have already written, including inside Mail's own compose window, and translates, for the patient who writes in another language.

The honest version of the time saving

Christopher Naas, who makes MailTwin, says it saves him an hour or more on a busy email day. That is his experience, not a promise about a front desk, and anyone quoting a precise figure is guessing. What holds is where the time goes: not into the one difficult message about a complaint, but into the thirty routine confirmations and reminders around it.

What it will not do

It does not connect to your scheduling system, your patient records or your billing software, and it does not know who has an appointment or what they owe. Every fact in a draft is one you typed. It will not read the inbox on its own, answer anyone without you, or send anything you have not looked at; there is no autonomous mode and no scheduled sending. It is macOS 13 or later only, Apple Mail only, with no iPhone or iPad app; if the practice runs its mail on Windows, this is not the tool for it. It needs two macOS permissions on the first run, Automation for Mail and Accessibility, which is a few minutes in System Settings and cannot be automated away, because Apple deliberately does not let an app grant itself access to your mail. And if your replies are mostly one line, it will not help much.

For practice-manager associations and dental groups

If you run a body whose members run front desks and want to look at this before they do, write to [email protected] and licences for the office will come back, no conditions and nothing expected in return. Endorsements are not asked for and not implied. MailTwin is made by Smilodon AS, a one-person company in Norway, and the person who answers that address writes the code.

Common questions

Is MailTwin compliant with health-privacy rules?

MailTwin does not claim compliance with HIPAA or with any other health-privacy regime, and no software can make that claim for your practice on its own. What is true is architectural: three of the nine engines, Apple Intelligence on macOS 26 or later, Ollama, and a local OpenAI-compatible server, run on the Mac itself, so with those the message content stays on the Mac and is not transmitted. Whether a cloud AI provider is an acceptable recipient of patient correspondence is a question for your own compliance rules and any agreement you hold with that provider. If the answer is no, the on-device engines are a complete answer, not a reduced one.

Does it connect to our practice management system?

No. It does not read your scheduling system, your patient records or your billing software, and it does not know who has an appointment. You type the time, the instructions and the balance in a few words and it writes the email around them. It only knows what you typed and what was in the message you selected.

Could it get an appointment time or a balance wrong?

When it rewrites a draft you have already written, a validator rejects the result if a number, date, amount, link or email address has changed. What it cannot do is judge whether a new sentence is true, so a wrong time you typed comes back written out neatly. Read every draft before it goes. Nothing sends on its own.

Our front desk answers from a shared practice address and staff have their own. Does that work?

Yes. Voice is learned separately for every mail account in Apple Mail, from that account's own sent mail. The practice address keeps the practice register and a named address keeps its own. Nothing is shared between them, and switching mailbox switches the voice.

What does it cost, and can the office share it?

A one-time licence with a 30-day full trial and no card to start, and a five-licence pack for an office. The engine is separate: the three on-device engines cost nothing to run, and a cloud provider bills you directly for what you use, usually a few cents a day at ordinary volumes. The app shows a running total.

Try it on a month at the desk

Thirty days, every feature, no card. A month with a recall run in it is the only honest test.

Download MailTwin →

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