TL;DR: Add a tag to your sender address with plus addressing (
user+tag@domain.com) so every automated email reveals which flow or system sent it, no extra licensing or infrastructure.
💡 Challenge
Automated notification emails often arrive with no clue which Power Automate flow or system triggered them, slowing support and audits.
✅ Solution
Embed a unique identifier in the sender address using plus addressing (user+tag@domain.com). The email itself now reveals its origin.
🔧 How It’s Done
1. Choose a clear tag
🔸 e.g. guest-management or invoice-processing.
2. Configure the sender address
🔸 Set the sending system or cloud flow to use user+tag@company.com, e.g. marcel.lehmann+guestmanagement@company.com.
3. Gmail / Google Workspace works the same way
🔸 marcel.lehmann+newsletter@gmail.com.
4. (Optional) Automate sorting
🔸 Create inbox rules or labels that flag or file the tagged messages automatically.
🎉 Result
Every incoming email clearly shows which workflow generated it, cutting troubleshooting time to seconds and simplifying compliance reports.
🌟 Key Advantages
🔸 Immediate source identification
🔸 Faster troubleshooting for IT and support
🔸 Simplified audit and compliance tracking
🔸 Zero extra licensing or infrastructure cost
🛠️ FAQ
Q1: Does plus addressing survive corporate mail gateways?
Most modern gateways keep everything before “@” intact; only rare legacy filters strip the tag. Test first.
Q2: Can I assign multiple tags to the same project?
Yes. Use addresses like projectX+finance@company.com and projectX+it@company.com to separate streams.
Q3: Are there security concerns?
Avoid putting sensitive information in the tag; use generic labels or numeric IDs instead.
🔗 Related Tips
- #PowerPlatformTip 149: Approvals to a Shared Mailbox, route automated mail through shared mailboxes cleanly.
- #PowerPlatformTip 142: Automate Outlook Categories, sort and flag those tagged emails automatically.
Marcel Lehmann
Microsoft MVP