Available on Microsoft AppSourceAI email assistant for Outlook
Handle your Outlook inbox in seconds, not hours
AI built into your Outlook toolbar. Summarize long threads, draft replies and polish emails without leaving your inbox.
★★★★★4.9· 130 ratings onAppSourceFree to start · No credit card required
The same work, in a fraction of the time
Typical times. Your results will vary.
Everything you need, right inside Outlook
One sidebar. No copy-paste, no switching tabs.
Summarize any thread
Get the full context of a long email chain in seconds. No more scrolling and re-reading.
Draft replies
Tell it what to say and get a polished reply in your tone, ready to send.
Rewrite and polish
Turn any draft into a cleaner, sharper, more professional version.
Fix grammar and tone
Sound confident and professional in every email, every time.
Catch up on any thread instantly
Open a long conversation and get what matters in a few bullet points.
- Key decisions and dates
- Who is waiting on what
- Works on threads of any length
CoreGPTPriya Shah
Re: Q4 launch timeline
Can we confirm the dates…
Marco Rossi
Contract renewal
Attached is the updated…
Support
Ticket #4821 resolved
Your request has been…
Emma Clark
Lunch on Thursday?
Are you free around…
Re: Q4 launch timeline
Priya Shah
Marketing needs final copy by Oct 28 if we keep the Nov 3 launch. Can engineering confirm the release candidate is on track?
Daniel Kim
RC is on track for Oct 30. QA needs two extra days for the payments flow, so Nov 3 is tight but possible.
Priya Shah
If QA slips, should we move the launch to Nov 5 instead?
Summary:
- Launch planned for Nov 3
- RC due Oct 30, QA needs 2 more days
- Option: move launch to Nov 5
Replies that sound like you
Say what you want to answer; CoreGPT writes the email.
- Short or detailed, friendly or formal
- Uses the context of the thread
- Edit before you send
CoreGPTPriya Shah
Re: Q4 launch timeline
Can we confirm the dates…
Marco Rossi
Contract renewal
Attached is the updated…
Support
Ticket #4821 resolved
Your request has been…
Emma Clark
Lunch on Thursday?
Are you free around…
Re: Q4 launch timeline
Priya Shah
Marketing needs final copy by Oct 28 if we keep the Nov 3 launch. Can engineering confirm the release candidate is on track?
Daniel Kim
RC is on track for Oct 30. QA needs two extra days for the payments flow, so Nov 3 is tight but possible.
Priya Shah
If QA slips, should we move the launch to Nov 5 instead?
Hi Priya, agreed. If QA needs the extra days, let’s move the launch to Nov 5 and keep Oct 28 for final copy. Thanks!
Up and running in 30 seconds
No setup and no API keys.
Add it to Outlook
Install from Microsoft AppSource. Works in Outlook desktop and on the web.
Open any email
Click the CoreGPT icon in your Outlook toolbar.
Get your result
Summarize, draft or rewrite in seconds.
CoreGPT for Microsoft 365
One plan for Outlook and every other app
Use CoreGPT in all 5 apps with one shared pool of credits, for you or your whole team.
Word
Excel
PowerPoint
Outlook
OneNoteWhat Outlook users say
Core GPT
“It works like a champ boosting productivity — Impressed.”
Pedro Furlanetto · Microsoft AppSource
Excellent app
“Helps with writing emails and summaries. Makes life easier — a must have at work.”
Abdullah Mandani · Microsoft AppSource
Must have for corporate emails
“Helps with my corporate email threads. Very user-friendly and efficient.”
Millien, Victoria · Microsoft AppSource
Common questions
Is it safe to use at work?+
Yes. CoreGPT AI for Outlook is distributed through Microsoft AppSource, the official Microsoft marketplace, and follows Microsoft’s requirements for Office add-ins.
Does it read or store my emails?+
Your email content is only sent to the AI model to create the response you asked for. It is not shared or used to train AI models.
Which versions of Outlook does it support?+
It works with Outlook on Windows, Mac and Outlook on the web.
Is it free?+
Yes, you can start for free with trial usage included. When you need more, upgrade to an Outlook plan, or to CoreGPT for Microsoft 365 to use one plan in Word, Excel, PowerPoint, Outlook and OneNote.
Start saving time today
Takes 30 seconds to install. Free to start.
Add to Outlook — Free