AI productivity assistant for Gmail™. Translate, summarize, and draft emails in 45 languages. Catch calendar conflicts, extract contacts, save hours on multilingual correspondence.
Listing updated:May 25, 2026
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Overview
Write less. Communicate more!

Kerna is the AI productivity assistant for Gmail™ that reads, summarizes, drafts, and replies — across 45 languages, right inside your inbox. Built for international professionals who'd rather close deals than translate, retype, and proofread.

Professionals spend over a quarter of their workday on email. Kerna gives that time back

🌍 TRANSLATE & UNDERSTAND
- Instantly translate emails in 45 languages — full translation, not just summaries
- Detect the original language automatically
- Generate concise summaries (brief, standard, or detailed)
- Summarize entire email threads with one click

📧 REPLY SMARTER
- Generate AI-powered replies with 7 tone options: Formal, Casual, Friendly, Direct, Enthusiastic, Diplomatic, Empathetic
- Choose from 8 intent options: Agree, Decline, Ask for Clarification, Provide Info, Follow Up, Thank, Apologize, Negotiate
- Reply in the email's original language — automatically
- Create threaded Gmail™ drafts with one click — review before sending
- Save custom reply prompts for recurring situations

✏️ COMPOSE NEW EMAILS
- Generate professional emails from templates or custom instructions
- Choose department, topic, and provide specific details
- Quick Improve (grammar fix) and Advanced Improve (full rewrite)
- Translate composed emails into any language
- Import recipients from Google Contacts™

📋 EXTRACT KEY INFORMATION
- Automatically extract contacts (name, email, phone, role)
- Extract calendar events with conflict detection — Kerna warns you before you accept a meeting that clashes with your schedule
- Extract action items as clear, actionable tasks
- Smart Focus: define custom extraction fields (e.g., "ticket number", "contract value", "deadline")
- Save extracted data to Google Tasks™ or Google Calendar™

👥 TEAM MANAGEMENT
- Create teams with shared token pools
- Set individual or default member limits
- Share custom prompts across the team
- Admin dashboard with usage tracking

⚙️ SETTINGS & CUSTOMIZATION
- UI fully translated into 45 languages
- Set default language, tone, and summary level
- Configure Smart Focus extraction fields by industry
- Auto-save preferences

🎯 WHO KERNA IS FOR
- International sales and account management teams
- Customer support handling multilingual inboxes
- Procurement, partnerships, and supplier managers
- Founders and executives running cross-border operations
- Anyone whose inbox regularly includes more than one language

🔒 PRIVACY & SECURITY
- Independently assessed under CASA Tier 2 (Cloud Application Security Assessment)
- Servers and data processing within the European Union
- Email content is processed in-memory only — never stored on our servers
- PII redaction applied before AI processing
- No model training on customer emails
- AI-generated content clearly labeled with disclaimer
- GDPR-compliant with self-service data deletion
- Full privacy policy: https://www.kerna.io/privacy

💼 SUBSCRIPTION TIERS
- Free: Basic translation, summarization, and reply generation
- Standard: Advanced AI models, higher token limits
- Pro: Custom prompts, Smart Focus, advanced text improvement
- Business: Team management, shared prompts
- Enterprise: 25 seats, Detailed reporting, priority support

Works entirely within Gmail™ — no new tabs, no copy-pasting, no switching apps. Open an email, click Kerna, get results in seconds.

Start free at kerna.io.

Gmail™, Google Contacts™, Google Tasks™, and Google Calendar™ are trademarks of Google LLC. Kerna is not affiliated with, sponsored by, or endorsed by Google LLC.
Additional information
PricingFree of charge with paid features
Developer
Privacy policy
Terms of service
Kerna AI Email Assistant will ask for the permissions shown below. Learn more
Kerna AI Email Assistant will need access to your Google account
This will allow Kerna AI Email Assistant to :
Manage drafts and send emails
View your email messages when you interact with the add-on
View your email messages and settings
View your email messages when the add-on is running
Run as a Gmail add-on
See, edit, share, and permanently delete all the calendars you can access using Google Calendar
View and edit events on all your calendars
See, edit, download, and permanently delete your contacts
See your primary Google Account email address
See your personal info, including any personal info you've made publicly available
Create, edit, organize, and delete all your tasks
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