AI Agents for Gmail: Gemini in Gmail and Connected Agents

Google folded Gemini into its paid Workspace plans in 2025 and retired the old standalone add-ons, so most business accounts now have AI inside Gmail at no separate charge. In the inbox it drafts replies, rewrites and shortens messages, summarizes long threads, and answers questions using your mail and files. Google also offers lightweight Workspace agents that run with access to your Gmail, Drive, Calendar, and Chat, which non-technical staff can set up for simple automations.

Pricing is per user and bundled: Business Starter is about $8 a user a month with Gemini in Gmail and a capped number of daily prompts, Business Standard about $18, and Business Plus about $28, with the fuller Gemini experience across Docs, Sheets, and Meet starting on Standard. That bundle is genuinely good value for an in-inbox assistant. The limit is scope and intent: Google itself frames its Workspace agents as lightweight automations rather than full agentic systems, and they stay inside your Workspace data. For a team drowning in a shared support or sales inbox, the assistant helps each person type faster but does not, on its own, run the inbox, which is the gap a purpose-built email agent fills.

A marketplace agent connects to Gmail through its API with scoped, revocable access, and it owns the repetitive inbox work. It reads each incoming message, classifies and labels it, routes it to the right owner, and drafts a reply from your approved answers, sending automatically for the simple cases and holding the rest for a person. When an email carries an order number, an invoice, or a support detail, the agent pulls it into your CRM or help desk so the record updates without anyone rekeying it, and it follows up on threads that go quiet. Because it runs on a flat subscription, a spike in volume does not change the cost.

This is where a connected agent earns its place next to Gemini. Gemini helps a person write a better reply; the connected agent handles hundreds of replies and keeps your other systems in step. Teams running a shared inbox often pair it with a connected AI agent for customer service so tickets and email stay in sync, and if the inbox is mostly sales, our AI agents for sales page covers reply and follow-up automation in more depth. If you would rather bring every mailbox into one place first, you can connect every mailbox in one workspace and let the agent work across all of them.

Email is how customers and prospects hear from you, so the default is cautious. The agent runs low-risk actions on its own, labeling, routing, and drafting, and you choose which replies send automatically (order confirmations, simple FAQs) and which wait for a person (refunds, complaints, anything with a dollar figure or a commitment). You widen what it sends on its own as you watch it work your real inbox, one message type at a time.

Every action the agent takes is logged against the thread, so a manager reviewing the inbox sees exactly what went out and why. Every agent listed on the marketplace is reviewed and security-scanned before it goes live, and you can see exactly what it does and which permissions it needs before you connect it to a live Gmail account. Compare the email and support agents side by side in the AI agent store, and read how to vet an AI agent before you grant inbox access.