Comparison
Best AI email assistant for a small business: ChatGPT vs Gemini
Updated 25 October 2026
Task: Automate email triage
Direct answer
The better email assistant is the one whose draft you will actually read before you send. ChatGPT works beside Gmail on the free plan until the cap. Gemini's Help me write sits inside Gmail only when your plan includes it, and a free UK personal account should not assume that. No bake-off was run.
ChatGPT
Best for. A separate Project and a draft you paste into Gmail, including on the free plan until the cap.
Cost. Free to try. Plus was listed at $20 a month before tax on 24 October 2026, about £15.
Setup. Labels first, then a Project that must not invent prices or dates.
Limit. You copy the draft across. A consumer plan is a poor place for client files. The test log is pending.
Gemini
Best for. A draft inside the Gmail message, once Help me write is visibly on the account.
Cost. On 25 October 2026 the US plans page showed Plus at $4.99 a month and Pro at $19.99. Read the card for your country.
Setup. Open a reply. If the button is missing, do not pay from this page's figure.
Limit. Personal Gmail without a paid plan is listed as US-only for Help me write. You still send.
Labels still come first. The ChatGPT triage playbook is the paste-across path. The Gemini playbook is the button inside Gmail. If the button is missing, do not invent a UK price and do not subscribe from the starting-at figure alone.
Customer replies that repeat a written policy are a third page, FAQ drafts, and they are not the same job as sorting the inbox.
Which to pick
Choose ChatGPT
You want to try a draft today without a Google AI subscription, and you will paste it into Gmail yourself.
Choose Gemini
Help me write is already in your Gmail, or you have read the price on the Google card and accepted it.
Choose labels first
The mailbox is mostly newsletters. Sort it with labels before either draft.
Playbooks for this task
Questions
Which writes a better email?
This page does not say. Nobody has scored the drafts. The difference we will stand behind is where the button lives, and whether a UK personal account can see it.
Can either of them send?
Not in these guides. Sending is the decision. A wrong promise about a day or a price is the expensive part, not the typing.
Sources
AgentShed is independent and this comparison is not sponsored. There is no affiliate link. Gemini's availability was read from Google's help page on 25 October 2026. The ChatGPT Plus figure is from 24 October 2026.