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Draft Emails Faster with AI

Write better emails in less time. CoreGPT for Outlook helps you draft messages, summarize threads, and keep communication moving — all without leaving your inbox.

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Key Features

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Email Drafting

Draft professional emails in seconds. Start from scratch or improve existing drafts. What you can do:
  • Generate email drafts
  • Create different tones (professional, casual, friendly)
  • Write subject lines
  • Compose replies
  • Create templates
[Screenshot placeholder: Email Drafting in action]

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Thread Summarization

Instantly summarize long email conversations to understand the key points without reading every message. What you can do:
  • Summarize email threads
  • Extract key decisions
  • Identify action items
  • Understand context quickly
  • Catch up on conversations
[Screenshot placeholder: Thread Summarization feature]

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Tone Improvement

Rewrite emails to match the right tone — from formal to friendly, professional to casual. What you can do:
  • Change email tone
  • Improve clarity
  • Fix grammar and punctuation
  • Enhance professionalism
  • Adjust for audience
[Screenshot placeholder: Tone Improvement]

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Reply Suggestions

Get AI-powered suggestions for quick replies and responses. What you can do:
  • Generate reply suggestions
  • Create quick responses
  • Draft professional replies
  • Maintain conversation flow
  • Save time on routine emails
[Screenshot placeholder: Reply Suggestions]

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Common Use Cases

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Professional Communication

  1. Draft important emails
  2. Rewrite for professional tone
  3. Review before sending
  4. Archive for reference

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Email Management

  1. Summarize long threads
  2. Extract key decisions
  3. Identify action items
  4. Respond efficiently

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Customer Communication

  1. Draft customer emails
  2. Rewrite for appropriate tone
  3. Ensure clarity and professionalism
  4. Maintain brand voice

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Meeting Follow-ups

  1. Draft meeting summaries
  2. List action items
  3. Assign responsibilities
  4. Send to team

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How to Use

1

Start composing

Click New Email or open an existing draft.
2

Open CoreGPT

Click the CoreGPT icon in the ribbon or toolbar.
3

Choose an action

Pick from:
  • Draft Email - Generate a new email
  • Improve Tone - Rewrite for different tone
  • Summarize Thread - Get key points from conversation
  • Generate Reply - Create a response
4

Click Generate

Click Generate and wait for results (usually 5-10 seconds).
5

Review and use

Review the result and click Insert to add to your email, or Regenerate to try again.

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Tips & Best Practices

Be Specific About Tone

Instead of “Draft an email,” try “Draft a professional email to a client about project delays.”

Provide Context

Include who you’re writing to and why. This helps CoreGPT match the right tone.

Always Review

Always review generated emails before sending. Make sure they match your voice and intent.

Use for Summaries

Use thread summarization to quickly catch up on long conversations.

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Email Tone Guide

Professional: Use for business communications, client emails, formal requests
  • Example: “I would like to request…”
  • Use: Formal language, complete sentences, professional closing
Casual: Use for team communications, informal updates, friendly messages
  • Example: “Hey, just wanted to let you know…”
  • Use: Conversational tone, contractions, friendly closing
Friendly: Use for relationship-building, personal touches, warm communications
  • Example: “Hope you’re doing well! I wanted to…”
  • Use: Warm language, personal touches, genuine tone
Direct: Use for clear instructions, quick updates, action items
  • Example: “Please complete X by Y date.”
  • Use: Clear, concise language, specific requests

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Troubleshooting

Try being more specific:
  • “Draft a professional email in the style of a technical expert”
  • “Write a friendly email to a new client”
  • “Create a formal email to senior management”
Try asking for more detail:
  • “Summarize the thread with all key decisions”
  • “Extract all action items from this conversation”
  • “Create a detailed summary of the discussion”
Use Ctrl+Z (or Cmd+Z on Mac) to undo. CoreGPT results aren’t automatically inserted — you control what gets added.
Try regenerating with a more specific tone request:
  • “Rewrite in a warmer, more personal tone”
  • “Make this more formal and professional”
  • “Simplify the language for clarity”

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Email Best Practices

Good email practices:
  • ✅ Clear subject line
  • ✅ Appropriate greeting
  • ✅ Concise message
  • ✅ Clear call-to-action
  • ✅ Professional closing
Avoid:
  • ❌ All caps (looks like shouting)
  • ❌ Too many exclamation marks
  • ❌ Unclear requests
  • ❌ Overly long emails
  • ❌ Vague subject lines

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Privacy & Security

Your emails are safe:
  • We never store your emails or content
  • All processing is encrypted
  • Your data stays in your Outlook account
  • We don’t use your emails to train models

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Next Steps

Explore Other Microsoft 365 Apps

Learn about CoreGPT for OneNote and Teams.

Get Help

Find answers to common questions.