Which AI agent for answering customer emails?
Short answer: Fin by Intercom, Lindy or ChatGPT. Fin by Intercom is our first pick: best for steady support volume.
Here are the AI tools and agents we’d look at first if you want to answer customer emails, with a simple setup recipe. This recipe is based on vendor documentation and common practice; hands-on testing is in progress.
Our picks
Fin by Intercom
Best for steady support volume
$0.99 per outcome, 50 outcomes/month minimum · With Intercom helpdesk: from $0.99 per outcome + $19 per seat/mo
DetailsBest for steady support volume
$0.99 per outcome, 50 outcomes/month minimum · With Intercom helpdesk: from $0.99 per outcome + $19 per seat/mo
Lindy
Best ready-made email assistant
Free: $50 in credits for 7 days · Team: from $29.99/mo per active user (3,000 credits)
DetailsBest ready-made email assistant
Free: $50 in credits for 7 days · Team: from $29.99/mo per active user (3,000 credits)
ChatGPT
Cheapest way to draft replies yourself
Free plan available · Paid plans: Go, Plus, Pro, Business, Enterprise (see site for prices)
DetailsCheapest way to draft replies yourself
Free plan available · Paid plans: Go, Plus, Pro, Business, Enterprise (see site for prices)
How to set it up
- List your 10 most common customer questions and your best answers.
- Put those answers in one help doc or knowledge base.
- Connect the tool to your support inbox and point it at the doc.
- Start in draft mode: the AI writes, a person approves.
- Switch common questions to auto-reply once drafts are consistently right.
Watch out for
Keep a person on refunds, complaints and anything legal.
Last reviewed Nov 2026. Pricing comes from each vendor's official page; confirm before you buy.