If you're using Outlook for work and Notion for project management, you're probably tired of manually copying emails between the two. Whether you're on Outlook.com, Office 365, or Microsoft 365, a focused forwarding workflow can keep selected new messages organized.
This guide shows you how to set up Outlook forwarding or rules for a manual-first Mailsink workflow. Perfect for testing client communications, support requests, or another email-based workflow before changing a broad rule.
Microsoft 365 policy caveat: Some tenants block external automatic forwarding and return a 5.7.520 response. An administrator may need to allow the route; manual forwarding or BCC may be the approved path. Mailsink cannot override tenant-level mail policy. See Microsoft's external forwarding policy documentation.
Related: If you use Gmail, check out our Gmail to Notion guide for similar setup instructions.
Why Forward Outlook to Notion?
The useful question is not whether to copy every message, but which messages belong in a Notion workflow.
The Problem
Constantly switching between Outlook and Notion breaks your focus and creates workflow friction. Important emails get buried in your inbox, making it hard to find critical information when you need it. Client conversations aren't linked to projects, so you lose context about ongoing work. Attachments scatter across email threads, making it nearly impossible to find that contract or document from three months ago.
The Solution
Forwarding selected messages can put useful context beside projects, clients, or tasks. The result depends on the rule, database mapping, permissions, and plan, so test the exact message types your team expects to use.
What You Need
You need an Outlook.com or Microsoft 365 mailbox and a Notion workspace. Setup time varies with workspace authorization, field mapping, and your organization's external-forwarding policy.
Step 1: Prepare Your Notion Database
First, create a database in Notion to receive your Outlook emails.
Quick setup
Open Notion and type /database to create a new table. Name it something descriptive like "Emails" or "Outlook Inbox". Start with Subject (Title), From (Text), Date (Date), and Body (Text). Mailsink can create recommended properties when auto-create is enabled. Add Attachments only after confirming attachment handling for your configuration and plan.
Step 2: Connect Notion to Mailsink
Mailsink gives the destination a forwarding address and a configurable Notion mapping:
- Create an account at mailsink.app.
- Open Connections and choose Connect Notion.
- Authorize Mailsink to access your workspace and choose the pages it can read/write.
- Create an inbox from Inboxes.
- Keep Email Inbox selected as the workflow and choose Notion as the destination.
- Decide whether to create a new database from inside Mailsink or link an existing one.
- Keep Auto-create properties on for recommended fields, then confirm which properties were created. Configure attachment mapping only when it is available for your setup and plan.
- Click "Create inbox". Mailsink verifies the connection, autoconfigures the database, and generates a unique inbox address (like
abc123@in.mailsink.app). - Copy the generated inbox address — you'll use this for Outlook forwarding rules.
- Optional: Open the inbox drawer later to customize field mappings under the Email Content, Email Metadata, Attachments, and Thread Linking tabs. You can rerun autoconfigure when you add new properties in Notion.
That inbox address is what we'll use in Outlook forwarding rules.
Step 3: Set Up Outlook Forwarding
Start with manual forwarding. If you later configure Outlook forwarding or an inbox rule, confirm that your Microsoft 365 tenant permits external delivery.
For Outlook.com (Personal)
- Open Outlook.com settings (gear icon → "View all Outlook settings")
- Go to "Mail" → "Forwarding"
- Enable forwarding and enter your Mailsink address
- Optional: Check "Keep a copy of forwarded messages"
- Save your settings
For Office 365 / Microsoft 365
- Open Outlook settings (gear icon → "View all Outlook settings")
- Navigate to "Mail" → "Forwarding"
- Start forwarding to your Mailsink address
- Set up inbox rules (optional, for selective forwarding)
Create Inbox Rules (Selective Forwarding)
Instead of forwarding everything, use rules to forward specific emails:
- Settings → "Mail" → "Rules"
- Add new rule
- Set conditions:
- From specific senders
- Contains specific words
- Sent to specific addresses
- Action: Forward to your Mailsink address
- Save rule
Example rules:
- Forward emails from
@client-company.com→ Client CRM database - Forward emails with "invoice" in subject → Finance database
- Forward emails to
support@yourcompany.com→ Support tickets database
Step 4: Test Your Setup
Send a test email to verify everything works:
- Send an email to the address you set up forwarding for
- Allow time for processing, then refresh Mailsink's activity view
- Check your Notion database and confirm whether the message arrived
- Review: Subject, sender, date, body, and any available attachments in the destination. Provider, permission, and plan limits apply.
Troubleshooting:
- Email not appearing? Check your Outlook forwarding settings, tenant policy, and Mailsink activity
- Missing data? Verify your Notion database properties match email fields
- Large attachments? Check your Mailsink plan for attachment size limits
Real-World Use Cases
1. Client Communication Tracking
Setup: Start with selected client emails and a "Clients" database in Notion Mapped data: Confirm the standard fields and any attachments received by your configuration Custom properties: Add your own properties to link emails to projects and tasks Optional AI: Test configured extraction fields on representative messages before relying on them
2. Support Ticket System
Setup: Forward support@yourcompany.com to a "Tickets" database
Mapped data: Confirm the subject, sender, body, and other configured fields
Custom properties: Add your own properties for ticket status, assignments, and resolutions
Optional AI: Treat categorization or priority as suggestions until reviewed
3. Invoice & Receipt Management
Setup: Forward receipts and invoices to "Finance" database Mapped data: Verify the body, fields, and any attachment with a sample receipt Custom properties: Add your own properties for categorization and tracking Optional AI: Review extracted financial values against the original message
Outlook vs Gmail forwarding
Both providers can offer forwarding or selective rules, but the available controls depend on the account and administrator policy. Gmail requires destination verification. Microsoft 365 can block automatic external forwarding. Start with a manual message in either provider.
Need Gmail instead? Read our Gmail to Notion integration guide.
Advanced Tips
Multiple Inboxes
Create separate inboxes in Mailsink for different purposes. Each inbox gets a unique auto-generated address:
abc123@in.mailsink.app→ Client CRMxyz789@in.mailsink.app→ Support ticketsdef456@in.mailsink.app→ Receipts
Notion Database Views
Organize emails with different views:
- Board view: Group by status or client
- Calendar view: See emails by date
- Table view: List all emails
- Gallery view: Visual view with attachments
Common Questions
Q: Does this work with Office 365 admin accounts? A: It can work when the tenant permits external forwarding. Some Microsoft 365 policies block it with a 5.7.520 response; ask the administrator or use an approved manual/BCC route.
Q: Will this delete emails from Outlook? A: No, Outlook keeps copies of all emails unless you specifically choose to delete forwarded emails.
Q: Can I stop forwarding later? A: Absolutely. Just disable the forwarding rule in Outlook settings.
Q: Can I forward from multiple Outlook accounts? A: You can test a rule in each account, subject to each account's forwarding controls and organization policy. Use separate Mailsink inboxes when the messages need different destinations.
Next Steps
Now that you have Outlook connected to Notion, consider:
- Build a lead workflow - See the lead email CRM use case
- Review setup constraints - Follow the manual-first Notion setup guide
- Try Airtable - Explore our email to Airtable guide
Ready to get started? Create a Notion Email Inbox →
Last updated: September 1, 2026