Agents like ChatGPT's Dots, Hark and Thine can read your inbox overnight and text you at 8 a.m. with the handful of messages that need you. They can notice that a buried email mentions an appointment missing from your calendar, and they can book a train on a clunky ticket site while you do something else. Several of them are free to start, and a few of the biggest AI companies have now built one.
They catch what you would never have asked about
A chatbot answers the question you bring it. That is useful, but it cannot help with a promise you forgot, because you would have to remember the promise to ask.
An agent that has standing access to your email, calendar and meeting notes can compare what you said you would do with what you have scheduled. For example, a recruiter has a candidate write, deep in a long thread, that Tuesday at 3 works for an interview. The recruiter replies to something else, and nothing goes on the calendar. The next morning the agent texts: "You agreed to Tuesday at 3 with this candidate, and there is no invite. Want me to send one?" The recruiter never asked for that check, and it is the one that keeps the candidate from being left waiting.
Morning briefings alone are not new; ChatGPT has offered them since 2025. What is new is that the same assistant can then go and do the task. Dots has its own cloud computer and connects to thousands of apps, so the follow-up, the booking or the form can be finished without you opening a laptop.
The saving is easy to estimate. If sorting email costs a manager 30 minutes a day, an agent that archives the irrelevant messages and drafts polite refusals gives back about 11 hours a month. The bigger gain is the mistake that never happens.
A helper that used to go with seniority now costs a subscription
Having someone who watches your inbox and diary has mostly been a privilege of rank. Hark is free to start and charges $20 or $100 a month for heavier use, and Thine is $15. Dots needs ChatGPT Pro at $100 a month, and it is not offered on Pro in the European Economic Area, Switzerland or the United Kingdom. Anthropic's Claude Duet is a research preview, open by waitlist to US subscribers on its Pro, Max and Ultra plans. Even the most expensive of these costs a small part of what a human assistant is paid, though none of them does everything a person can.
Giving an agent your email and calendar is a real decision. The safer ones ask before they send a message, make a payment, sign a document or delete a file, and that approval step is worth keeping on. A free shopping agent also has to earn its money somewhere, so check whether its recommendations include paid placements. Expect some friction too: agents can stumble when you have two Gmail accounts, or when your employer restricts which apps can connect.
Hand over the checking before the doing
We wrote earlier about a CEO who gave chief-of-staff tasks to an agent. That is the right direction, but most people should not begin with the heavy work. Begin with the checking: tell one agent to watch for promises in your email that never reached your calendar, threads waiting for your reply, and deadlines nobody has scheduled. An agent that only flags gaps carries little risk, and it shows you what the agent is good for before you let it send or pay for anything.