Kerna vs Jetwriter AI

Kerna7.8Visit Jetwriter AI7.5Visit

Higher score Kerna #6 in AI Email Writing Tools 7.8/10 Free plan Free plan✓ 2 of 3 features Visit Kerna

vs

Jetwriter AI #9 in AI Email Writing Tools 7.5/10 Free plan Free plan✓ 3 of 3 features Visit Jetwriter AI

• Kerna fits best

  Multilingual email and inbox workflows

• Jetwriter AI fits best

  Gmail users wanting research and writing tools

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	Kerna 7.8/10 Visit ↗	Jetwriter AI 7.5/10 Visit ↗
At a glance
Editor score	7.8	7.5
Ranking	#6 in AI Email Writing Tools	#9 in AI Email Writing Tools
Best for	Multilingual email and inbox workflows	Gmail users wanting research and writing tools
Pricing model	Free plan + paid	Free plan + paid
Starting price	€12/mo	$14/mo
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud	Cloud, Browser extension
Platforms	Web, Windows, macOS	Web, Chrome extension
Support	Email, Docs	Email, Tickets, Docs
Integrations	6 integrations	8 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market
Features Kerna 2/3 · Jetwriter AI 3/3
Tone controls	✓	✓
Custom instructions	✓	✓
Browser extension	—	✓ (best)
Specs
Email context input	Thread	Inbox
Mail client support	Both	Both
Supported languages	45 languages	Not checked yet
Our review
Pros	Drafts replies and new messages with selectable tones and intents Translates email in 45 languages and summarizes threads Extracts data from emails and attachments for export to common office tools	Gmail-history analysis adds context to replies Custom styles, tone instructions, and personalized profiles Webpage, file, voice-input, translation, and summary tools
Cons	Starter, Standard and Pro plans are limited to one user No browser extension is listed among its supported features Usage is governed by monthly token allowances or shared token pools	Elite starts at $18 per month when billed monthly Advanced AI responses are capped by plan Automatic Gmail drafts have daily limits on paid plans
Our verdict	Kerna is an AI email assistant for people and organizations working in Gmail or Outlook. It drafts replies from email threads, composes new messages from topics or saved instructions, summarizes conversations, translates email in 45… Read the review →	Jetwriter AI is an AI writing assistant available through a browser extension and web app. It is designed for people and businesses that write emails, messages, support responses, and other web-based content. Its core tools cover email… Read the review →

Strengths and trade-offs

• Kerna — where it wins

  • Drafts replies and new messages with selectable tones and intents
  • Translates email in 45 languages and summarizes threads
  • Extracts data from emails and attachments for export to common office tools

  Where it doesn't

  • Starter, Standard and Pro plans are limited to one user
  • No browser extension is listed among its supported features
  • Usage is governed by monthly token allowances or shared token pools

• Jetwriter AI — where it wins

  • Gmail-history analysis adds context to replies
  • Custom styles, tone instructions, and personalized profiles
  • Webpage, file, voice-input, translation, and summary tools

  Where it doesn't

  • Elite starts at $18 per month when billed monthly
  • Advanced AI responses are capped by plan
  • Automatic Gmail drafts have daily limits on paid plans

• Kerna7.8/10 · Free plan

  A broad email workflow assistant for multilingual drafting, triage and extraction.

  Visit KernaFull verdict →
• Jetwriter AI7.5/10 · Free plan

  A broad Gmail-focused writing assistant with research tools and a free plan.

  Visit Jetwriter AIFull verdict →