Build Outlook add-ins for the new Outlook on Windows
What can I build with the new Outlook?
The new Outlook adds features to improve user productivity, organization, and collaboration. These are just a few of the scenarios you can try.
Apply themed signatures
Use the event-based activation feature to apply the correct signature to messages across multiple Exchange accounts.
Integrate a spam reporting add-in
With the number of unsolicited emails on the rise, security is a top scenario for add-ins.
Use Smart Alerts to protect sensitive information
The OnMessageSend and OnAppointmentSend events now use Smart Alerts. You can run logic after users send messages to prevent the sending of sensitive information.
Enable users to import or export attachments from the cloud
With the item multi-select feature, your Outlook add-in can now activate and perform operations on multiple selected messages at once.
Simplify how users create and join online meetings
Streamline the user experience when creating and joining online meetings using the no item context feature.
Send and retrieve information from CRM and tracking services
Integrate your CRM data into Outlook to enhance user productivity right in their Inbox.
Transition to the new Outlook for Windows
VSTO and COM add-ins will no longer work in the new Outlook. To ensure your add-in continues to work in the new Outlook on Windows, migrate your VSTO or COM add-in to an Outlook add-in.
Seamlessly integrate your business solutions into classic Outlook
Increase user accuracy and efficiency
Help your users improve the quality of their emails. Build add-ins that check for missing attachments, insert legal disclaimers, or update sensitivity labels.
Build contextually rich email experiences across platforms
Outlook add-ins provide information and surface tasks when the user reads or composes email, and work across Windows, Mac, Android, iOS, and the web.
Drive efficiency and compliance
Create solutions that simplify tasks and ensure compliance.
Resources to help you get started
Microsoft 365 Developer Program
Get resources and information to help you build solutions for the Microsoft 365 platform, including recommendations tailored to your areas of interest. You might also qualify for a free, renewable developer subscription with a developer tenant that's preconfigured with sample data so you can test your add-in.
Start your learning journey
Learn how to create your first Outlook add-in with our self-guided training.
Explore more resources
Join our community
Don't reinvent the wheel. Share with others and contribute your knowledge about building apps for the new Outlook.
