If you tell your AI “go through my inbox and draft replies,” that's just a task. An agent is when you give it a goal: “your job is to own my client communication, monitor my inbox, help negotiate new work, and flag anything that needs me.” You're giving it a job and letting it work out the steps.
For that to actually work, it needs four things.
Context
What does your business do? Who are your clients? What do you charge? Give it that so it isn't guessing on your behalf.
Memory
AI forgets what happened last time. Give it a place to save things, like what a client agreed to, and have it check those notes before it acts.
Tools
The model is the brain, but it needs access to actually do things. Connect your email, calendar, and files so it can read the conversation, check your schedule, and prepare a reply.
A trigger
What tells it when to start, say every morning at nine. You don't need it running all day if you only need it once a day; that gets expensive.
Then set the guardrails
Drafting an email is fine. Sending it, agreeing to a price, or spending money needs your approval, set that with the app's permission controls, not just a prompt. Run it once while you watch, fix what it gets wrong, then put it on the schedule. Now you can hand your agent a job without spelling out every step.
A task is one instruction. A goal is a responsibility it manages, choosing steps and tools based on what it finds, inside the guardrails you set.