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Best AI tools for writing emails

The email pile is where AI saves the most time in silence. You write three support words, AI turns them into a finished response in the right tone, and you edit in ten seconds instead of formulating from scratch. ChatGPT and Gemini are enough for free; Copilot embeds it directly in Outlook if you already run Microsoft 365; Copy.ai is sharp when the emails are salesy. The downside is uniformity: let everything go through AI and your emails start to sound like everyone else's. Use it for drafts, not for your voice. This is how we rank them.

Quick comparison

#ToolRatingPrice
1 ChatGPTMost popular 4,8 Excellent Freemium Review β†’
2 Google Gemini 4,8 Excellent Freemium Review β†’
3 ClaudeBest for text 4,3 Very good Freemium Review β†’
4 Mistral (Le Chat)European 3,8 Good Freemium Review β†’
5 Microsoft Copilot 3,8 Good From approx 220 SEK/month Review β†’
6 Notion AI 3,8 Good Freemium Review β†’
7 Copy.ai 3,3 Good From approx 290 SEK/month Review β†’

Links marked Try are affiliate links.

Our reviews

1

ChatGPT

OpenAI

4,8 Excellent
Most popular
Outside EU Writing Freemium EU data: Enterprise only ISO 27001

Writes quotes, emails and customer replies in seconds. The free version goes a long way for everyday use; the downside is that data is stored in the USA unless you have an Enterprise or Edu plan with EU data residency.

  • The free version is enough for most small businesses
  • Best in Swedish among the major AI tools
  • Data is stored in the USA on Free, Plus and Business plans; EU data storage is only available for Enterprise and Edu

Best for: Everyday tasks like email, text, ideas and research.

2

Google Gemini

Google

4,8 Excellent
Outside EU Writing Freemium EU data: Enterprise only ISO 27001

Google's answer to ChatGPT: free and built into Gmail and Docs if you use Google Workspace. Equally sharp in Swedish, but sometimes answers a little too cautiously.

  • Free to use
  • Built into Gmail, Docs and the rest of Google Workspace
  • Data stored in USA in the free version

Best for: Those who already work in Gmail and Google Docs.

3

Claude

Anthropic

4,3 Very good
Best for text
Outside EU Writing Freemium ISO 27001

Anthropic's AI, often best for longer and more nuanced text. Strong in Swedish.

  • Excellent in Swedish and longer texts
  • Free tier available
  • Data is stored in the USA

Best for: Longer texts, analysis and nuanced answers.

4

Mistral (Le Chat)

Mistral AI

3,8 Good
European
EU/EEA Writing Freemium EU data storage βœ“ ISO 27001

France's answer to ChatGPT and one of the few European AI models in the top class, with EU data storage.

  • European model in top class
  • EU data storage
  • Slightly weaker than the largest American ones

Best for: Those who want a powerful AI chat within the EU.

5

Microsoft Copilot

Microsoft

3,8 Good
Outside EU Writing From approx 220 SEK/month EU data storage βœ“ ISO 27001

Microsoft's AI built into Word, Excel and Outlook. Makes sense if the company already uses Microsoft 365; otherwise an expensive add-on for features you rarely use.

  • Built directly into Word, Excel and Outlook
  • EU data storage via Microsoft 365
  • Expensive add-on, around SEK 220/month per user

Best for: Companies that already live in Microsoft 365.

6

Notion AI

Notion

3,8 Good
Outside EU Writing Freemium EU data: Enterprise only ISO 27001

AI built into the note-taking tool Notion, which writes and summarizes where you already work.

  • Built into your notes
  • Good at summarizing
  • Requires that you use Notion

Best for: Teams already using Notion.

7

Copy.ai

Copy.ai

3,3 Good
Outside EU Writing From approx 290 SEK/month

Writes product descriptions, headlines and sales emails non-stop. Good for volume, but the free tier has now been removed and the texts need your polishing.

  • Fast when you need many texts
  • Sharp at headlines and product descriptions
  • The free tier has effectively been removed (from approx. SEK 290/month)

Best for: Sales copy and content that needs to be produced in volume.

Common questions

Will the recipient notice the email is AI-written?

If you don't edit, yes. The text becomes generic. A personal sentence at the end is usually enough to make it sound like you again.

Can AI reply to emails fully automatically?

The tools suggest replies, but automatic sending without review is not recommended. Always read through before you hit send. A wrong AI answer costs more trust than it saves time.