
InboxSDK
First usable API to write Gmail Apps for 1B active users
In plain words
InboxSDK is a developer tool that provides an API for building applications that integrate with Gmail. It enables developers to create and deploy custom functionality for Gmail's billion active users without requiring deep knowledge of Gmail's internal systems. The SDK handles the technical complexity of Gmail integration, allowing developers to focus on building their app's core features. It launched in 2015 and is designed for developers building email-based tools and extensions.
written from the facts on this page · September 2026
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