GPT for Gmail

Multi-model AI sidebar that drafts, translates, and summarizes inside Gmail.

Freemium· Free tier with paid premium featuresWritingMulti-model (GPT-4o, Claude, Gemini, Mistral, Perplexity)

Best for

Pick GPT for Gmail if you live in Gmail and want a model-agnostic drafting and translation sidebar without leaving your inbox.

Skip if

Skip it if you need Outlook support, an API, or deep CRM-style automation beyond per-message drafting.

GPT for Gmail is a Google Workspace add-on from docgpt.ai that bolts a multi-model AI assistant directly into the Gmail compose and reading panes. It generates replies from context, rewrites tone, translates across 40+ languages, summarizes long threads, and ships a library of prebuilt prompts for common HR, sales, and customer-support scenarios. The add-on works on desktop Gmail as well as the iOS and Android apps.

The pitch that sets it apart from the dozens of other Gmail AI plugins is model choice: instead of locking you to one provider, it routes through GPT-4o, GPT-4, GPT-3.5 Turbo, Claude, Gemini, Mistral, and Perplexity, letting users pick the model per task. It is freemium, with basic generation free and heavier usage / premium models behind a paid tier. The 587K+ install base on the Marketplace suggests it is one of the more battle-tested options in the category, though reviews are modest in number.

Integration is sidebar-only inside Gmail, so it does not touch calendar, Drive, or non-Google mail clients. Personalization claims to learn from your writing style, but there is no public API and no self-hosting story — this is firmly a consumer/SMB productivity add-on, not an infrastructure piece.

Editor's take

A solid pick in a crowded niche, mainly because of the model-switching. The Gmail-only scope is limiting, and the polish lags behind first-party Gemini in Gmail, but the multi-provider flexibility and free tier make it a reasonable default for individuals.

— The AI Tool Bible editorial team