Can ChatGPT answer my emails? What works, and what still needs you

Three ways to use AI on your inbox

1. Copy, paste, copy back

You paste an email into a chat window, ask for a reply, then copy the answer into Gmail or Outlook. It costs nothing extra and the AI never touches your account. It also means you do the sorting, the pasting and the remembering yourself, one email at a time. Fine for the odd tricky message; tiring for twenty a day.

2. A chat assistant connected to your mail

ChatGPT and similar assistants can now link to Gmail on some paid plans, so they can search your inbox, read a thread and draft an answer without the copy and paste. What is available depends on your plan and your country, and it changes often, so check the provider’s own help pages for the current list. The pattern is still mostly “you open the chat and ask”: it works when you remember to ask.

3. An agent that runs a routine for you

The third option is an assistant that keeps running when you are not looking at it. You describe the job once (“every weekday at 8, find customer emails I have not answered and draft a reply to each”), and it does that on schedule, with your sign-off and your prices kept in its memory. The replies wait as drafts in your own mailbox. You read them, fix what needs fixing and press send.

That third option is what ReadyHermes runs: your own Hermes Agent, an open-source AI agent, hosted for you and connected to your Gmail or Outlook. The rest of this page uses it as the example, but the advice about what to automate applies whichever tool you pick.

A worked example: one morning run

Imagine Maya, who runs a small cake and catering business on her own. Her inbox gets 10 to 15 emails a day: orders, changes, price questions and the odd complaint. On her first day she connected Telegram and sent her agent this:

Every weekday at 8:00, look through my Gmail for customer emails
from the last 2 days that I haven't answered. Save a draft reply
to each one in my Gmail Drafts. Don't send anything.
Sign the drafts "Maya, Rise & Shine Cakes".
If someone asks about a price that isn't in my price list,
leave the price out and tell me in your summary.

The agent sent her a sign-in link to connect Gmail, saved the sign-off and the price rule to its memory, and set up the schedule. On Tuesday at 8:00 it read 12 new emails and left this summary in her Telegram chat:

• Drafted: Priya changing a collection time to Saturday 11:00. Draft confirms the new time.
• Drafted: Tom asking whether the lemon cake is nut-free. Draft quotes her allergen note word for word, which Maya had given it on day one.
• Drafted, price left out: a school asking for 120 cupcakes. Draft thanks them and asks for the date; the summary flags that 120 is above her listed quantities.
• Not drafted, flagged: a customer unhappy that a delivery was late. Maya asked for complaints to come to her first.
• Skipped: two supplier invoices, a newsletter and five notifications.

Maya spent about ten minutes in her Drafts folder. She sent two drafts as written, added a price to the cupcake one, and wrote the complaint reply herself. Before, the same inbox took most of an hour, mostly spent working out where to start.

“Don’t send anything” is an instruction, not a lock. Once Gmail is connected, the agent can send mail if you ask it to. Keep the instruction in every email job, and say it again in plain words if you ever change the routine.

Emails you should keep for yourself

Drafting saves time on routine messages. These are the ones where a wrong word costs more than the time saved, so tell the agent to flag them instead of drafting:

• Money you have not written down. Discounts, custom prices, refunds and anything that sounds like a promise. Give it a price list and tell it to leave out anything not on it.
• Complaints and disputes. A calm, apologetic draft is easy to produce, but what you offer to fix it is your call.
• Anything legal, medical or about safety. Allergen questions are fine only when it quotes wording you have approved.
• Strangers asking you to click, pay or log in. Phishing emails are written to fool people, and an AI reading your inbox can be fooled too. Tell the agent to treat what an email says as information, never as instructions to follow.
• People you have a long history with. Your best customers notice when the tone changes.

A simple rule covers most of this: “If an email is about money, a complaint or something you are not sure of, don’t draft it. Put it at the top of your summary.”

Setting it up in practice

1. Start the free trial and open the chat. Ask: “Connect my Gmail.” (Outlook works the same way.) The agent replies with a secure sign-in link; sign in and go back to the chat.
2. Give it the facts it needs: how you sign off, your opening hours, your price list, and two or three past replies you were happy with. It keeps these in its long-term memory.
3. Try a one-off run first: “Draft replies to customer emails from the last 2 days that I haven’t answered. Don’t send anything.” Read the drafts in Gmail and tell it what to change.
4. When the drafts are close, ask for the schedule: “Do this every weekday at 8:00, my time.”
5. Connect Telegram, WhatsApp or another chat app under Channels if you want the morning summary on your phone. The browser chat has no push notifications, but the drafts land in Gmail either way.

The step-by-step guide shows each screen, including how to connect the chat apps.

What it costs, and where the limits are

The trial is 30 minutes, free, with no card. That is enough to connect Gmail, run one batch of drafts and see whether you like them. After that, you choose Lite at $3.99 a month or Pro at $6.99 a month. Both are offer prices against regular prices of $5 and $10, and what you pay does not go up at renewal. Local tax is added where it applies.

Both paid plans include $1 of AI every month on DeepSeek V4.1 Flash, roughly 100 everyday requests, renewing on your billing date. Be realistic about that number: a daily inbox run that reads a dozen emails and writes several drafts uses much more than a quick question does. A light inbox fits; a busy one may run out before the month ends. When that happens the agent tells you the renewal date, and on a paid plan you can add your own key from OpenRouter, OpenAI, Claude, Gemini or another provider, billed to you by that provider with no AI limit from us.

A few more things it does not do:

• It does not answer phone calls or voicemail. This is email and chat only.
• It gets things wrong sometimes, like any AI: a date misread, a tone slightly off. That is why the drafts wait for you.
• Drafting a reply means the email text goes to an AI model provider, possibly outside the EU. Your agent and account are kept on servers in the EU, and ReadyHermes does not use your conversations to train AI.

If customer email is one of several jobs you want off your plate, read an AI assistant for small business owners for the wider picture, or see the plans in pricing.