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What it does

A private AI email assistant: triage and reply drafts, for your OK.

Short answer

A private AI email assistant sorts incoming mail, drafts replies for you to approve and tracks follow-ups, with the model running on hardware you control rather than an AI vendor’s cloud. Cloud assistants such as Copilot in Outlook and Gemini in Gmail do similar work, but process your mail on the vendor’s servers.

What it does

Triage

Mail sorted into urgent, waiting on you and waiting on them.

Reply drafts

A draft in your tone for each message that needs an answer, waiting for your OK.

Follow-ups

Reminders when a client hasn’t sent what they owe, on rules you set.

Morning rundown

One page: what came in, what’s drafted, what’s overdue.

Cloud email assistants vs on-site

Copilot in OutlookGemini in GmailOther AI email appsAdminOnsite
Where mail is processedMicrosoft’s cloudGoogle’s cloudThe app vendor’s cloudA Mac mini in your office
Price modelPer user (Copilot license)Per user (Google Workspace plan)Per user subscriptionFlat monthly price for the office
Sends without approval?You decideYou decideVariesNo, unless you allow routine items

A summary, not a feature comparison. Check each vendor’s current terms.

Follow-up rules you can set

Examples of rules offices use:

  • Remind a client after 5 business days if requested documents haven’t arrived.
  • Flag any email that mentions a deadline, a court date or a filing date.
  • Draft a polite second request for unpaid invoices 14 days past due.
  • Put new-client inquiries at the top of the morning rundown.

What stays human

Every reply is a draft until a person approves it. The assistant can be wrong about facts, so names, figures and dates are checked before sending, and anything involving advice, money or deadlines gets a professional’s eye. You can choose low-risk routine replies, such as receipt confirmations, that it may send on its own.

Questions

Does it send email automatically?

No, not by default. Drafts wait for your OK. You can allow specific routine replies.

Does it work with Outlook or Gmail?

It connects to your office mailbox the way an email app does. We confirm the connection for your email provider during the demo.

Is my email sent to an AI company?

No. The models run on the Mac mini in your office.

How is this different from Copilot in Outlook?

Copilot runs in Microsoft’s cloud and is licensed per user. AdminOnsite runs in your office at one price for everyone.

Can several people share it?

Yes. It can work across several personal and shared inboxes; the Office plan adds more inboxes.

Sources, checked November 13, 2026

  1. Microsoft: Copilot plans and pricing for business
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See it on your own files

Tell us about your office. We’ll set up a demo with documents like yours, so you can judge the drafts and summaries yourself.

  • Your kind of documentsWe demo on sample files from your field: letters, workpapers or policies, not a canned script.
  • Straight answers on priceFlat monthly plans for the whole office. No seats, no credits.
  • Honest about fitIf cloud AI is the better choice for you, we’ll say so.

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