Get Started

Request an Application Key

All API requests require an application key pre-registered with Mimecast.

If you’re an existing Mimecast customer, click here to access our self-provisioning tool to request and manage your API Keys.

If you’re looking to create an integration with Mimecast and are not a customer, click here to obtain an Application Key, Test Sandbox and more!

Start Building

Use the documentation and smaple code to start building your integration.