ChatGPT for Outlook Add-In: Options, Setup, and Permissions

There is no add-in for Outlook built and published by OpenAI. Microsoft 365 Copilot — which uses OpenAI models under license — is the Microsoft-native AI experience inside Outlook for eligible subscriptions. Third-party add-ins that connect ChatGPT to Outlook do exist, but they come from independent developers, not from OpenAI directly. Tools like fenbs help you track the follow-up work and decisions your email conversations create, keeping them outside the inbox where any connected AI assistant can reach them.

Before installing anything, it is worth being clear on the distinction: Microsoft 365 Copilot is a Microsoft product your IT department enables. Third-party ChatGPT add-ins are separate software that asks for inbox access. They are not the same thing, and the setup process, cost, and permissions differ significantly.

Microsoft 365 Copilot versus a ChatGPT add-in

Microsoft 365 Copilot is integrated into Outlook at the platform level when your organization licenses it. It can draft emails, summarize threads, and suggest follow-up actions from within the Outlook interface. Because it is a Microsoft product, it stays within Microsoft's data boundary — your email does not travel to a third-party service.

A third-party ChatGPT add-in is different. It is software published by a company other than Microsoft or OpenAI that calls the OpenAI API. Your email content goes from Outlook, through the add-in's servers, to OpenAI. Each step introduces a party that sees your email. If your organization has data handling rules, that chain matters. For a broader look at how ChatGPT compares to other assistants, see copilot vs chatgpt.

What to check before installing a third-party Outlook add-in

Microsoft distributes add-ins through the Microsoft AppSource marketplace, and some are sideloaded directly by IT admins. Either way, the same questions apply:

• Who is the publisher? Look for a company with a clear website, published privacy policy, and support contact. An anonymous developer is a red flag for inbox access.
• What permissions does it request? Outlook add-ins operate under a permission model that ranges from reading selected text to reading all mail. Read-all access is broader than most use cases require.
• Where does email content go? Does the add-in send data to its own servers, or does it pass only selected text to the OpenAI API from your browser? The difference matters for confidential email.
• Is it approved by your IT department? Many organizations restrict Outlook add-ins to an approved list. Installing an unapproved add-in may violate policy even if it works.

Using ChatGPT with Outlook without an add-in

The simplest approach is also the most controllable. Open the email, select the text you need help with, and paste it into ChatGPT at chat.openai.com↗ (opens in a new tab). You decide exactly what leaves your inbox with each paste. This works for drafting replies, summarizing threads, extracting action items, and translating messages.

For recurring tasks — like drafting a standard reply to a certain type of inquiry — save the prompt you use in a shared location so you do not have to rewrite it each time. ChatGPT Projects lets you store instructions and files for a specific workflow, which can help with consistent email tasks. For a general view of what ChatGPT can do in a business setting, see chatgpt for business.

Automation options for connecting ChatGPT to Outlook

If you need a more automated workflow — for instance, processing a high volume of incoming requests — automation platforms like Zapier and Make let you build flows that watch a folder, pass email text to the OpenAI API, and deliver a result. These require configuration and ongoing maintenance.

Power Automate, which is part of Microsoft 365, also connects to the OpenAI API through its connector library. For organizations already using Microsoft 365, this is often easier to manage than a third-party add-in because it stays within the same administrative boundary.

Keeping reviewed email links and handoffs outside the inbox

Email conversations about projects often create commitments and next steps that belong in the project record, not buried in a thread. Once you have reviewed an email with ChatGPT and identified the actions, those actions need to live somewhere your team and their AI assistants can find them — not just in the inbox. fenbs keeps the source references and the resulting tasks together, so the context of why a task exists is always one click away.

How to do this with fenbs

fenbs does not connect to Outlook directly. What it provides is a project record that captures the decisions and tasks your email produces, with a link back to where they came from.

1. Create a free account. Start with the project that the email relates to — a client, a contract, an ongoing workflow.
2. When an email produces a decision or commitment, record it in fenbs as a task or a Decision. Add a short note about the source: "Client confirmed scope in October 21 email." That becomes the record both you and a connected AI assistant can reference.
3. Use ChatGPT to draft replies or summarize the thread. Paste the relevant context into ChatGPT, not the whole inbox.
4. Connect a supported AI app from Integrations. At the start of the next session, it reads the project context — including the decisions from email — without you explaining the whole history again.
5. Before you finish a session, ask the assistant to record Where we left off. The handoff is now in the record, not just in the inbox.