BotTasks / Email writing
Best AI tool for email writing
One decision, not a directory. Pricing checked 2026-10-14.
ChatGPT
OpenAI's general-purpose AI assistant for writing, analysis, coding and images.
Free tierFree tier; paid plans (Go, Plus, Pro, Business)Writing
Claude
Anthropic's AI assistant, strong at long documents, writing and coding.
Free tierFree tier; Pro $20/mo ($17/mo billed annually)Writing
- Open chatgpt.com; the free tier is enough for drafting emails.
- Give context, not just a topic: who the recipient is, your relationship, the goal, and any facts that must be included.
- Ask for a short draft under 150 words with a clear ask in the last line.
- Request two alternative subject lines and a firmer or warmer version if needed.
- Edit the final draft in your own voice and double-check names, dates and numbers before sending.
Why ChatGPT
ChatGPT is free to start, fast, and good at matching tone when you give it the situation, so it covers most everyday email drafting.
When to choose Claude instead
Choose Claude if your emails are long or sensitive and you want writing that sounds less templated, or you need to reference long attached documents.
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Pricing at a glance
| Tool | Pricing | Free tier |
|---|---|---|
| ChatGPT | Free tier; paid plans (Go, Plus, Pro, Business) | Yes |
| Claude | Free tier; Pro $20/mo ($17/mo billed annually) | Yes |
| Grammarly | Free plan; Pro $12/mo | Yes |
| Gemini | Free tier, paid plans via Google AI subscriptions | Yes |
| Superhuman | Paid plans | No |
Pricing changes often; check the official site before buying.
FAQ
What is the best AI tool for email writing?
Our pick is ChatGPT: OpenAI's general-purpose AI assistant for writing, analysis, coding and images. Pricing: Free tier; paid plans (Go, Plus, Pro, Business).
When should I choose Claude instead?
Choose Claude if your emails are long or sensitive and you want writing that sounds less templated, or you need to reference long attached documents.
Does ChatGPT have a free plan?
Yes. ChatGPT: Free tier; paid plans (Go, Plus, Pro, Business).