Kerna's IntelligencePowered by OpenAI.
Designed explicitly for Gmail. Kerna integrates GPT-4 & GPT-5 reasoning directly into your Google Workspace for 45-language translation and structured workflow automation.
Built for privacy. Engineered for speed.
We never train models on your data. Kerna operates strictly within Google's secure environment.
Engineered for the inbox.
The world's most advanced reasoning, brought into the place you already work. No tab-switching, no copy-paste — every capability runs natively in your Gmail sidebar.
Native-Level Translation
Break language barriers without breaking confidentiality. Write in English and send in flawless Spanish, French, German, Polish, or Japanese — across 45 languages, tuned per language rather than machine-translated.
- 45 languages
- Bidirectional translation
- Business-grade accuracy
Structured Drafting
Start from 200 purpose-built templates — cold outreach, follow-ups, reminders, and more — each backed by an industry-aware brief that steers tone, structure, and detail. Kerna drafts a complete, ready-to-refine email from the brief in one click.
- 200 templates
- Industry-aware briefs
- Formal & casual modes
Tone & Polish
Make every message land the way you intend. Rewrite a rough draft to sound more confident, more empathetic, or more concise — then review it before you ever hit send.
- Grammar correction
- Tone adjustment
- Clarity improvements
Executive Summaries
Skip the whole thread. Kerna reads the last 50 messages and returns a structured brief with the key points and action items.
- Bullet-point briefs
- Action-item extraction
- Thread-history analysis
Context-Aware Replies
Drafts that actually make sense — Kerna reads the prior messages so replies stay relevant, polite, and on-tone.
- One-click drafting
- Matches your tone
- References prior detail
Smart Extraction
Never miss a detail. Kerna detects dates, meeting times, contacts, and tasks buried in long, messy threads.
- Calendar-sync ready
- Contact capture
- Deadline detection
- Task listing
“Hi — let's loop in Sarah Chen and meet Tuesday 2 PM to review the budget deck before Friday.”
Your workflow, uninterrupted.
Stop switching tabs. Kerna lives natively inside your Gmail sidebar, eliminating the need to copy-paste sensitive data into external AI tools.
1. Secure Analysis
Open any email. Kerna analyzes the conversation history via strictly encrypted TLS channels to understand intent, tone, and key details.
2. Generative Reasoning
Select a quick action (like 'Polite Decline') or type a custom instruction. Our GPT-5 engine drafts a full response in seconds.
3. Native Handoff
Review the draft and insert it directly into your Gmail compose window with one click. You retain full control before hitting send.
Simple, transparent pricing.
Choose the level of intelligence you need. Upgrade or cancel anytime.
Starter
Test the connection. Limited capacity for new users.
- 50,000 Tokens (Trial Volume)
- GPT-4
- Basic Reply Functionality
- Single User License
Standard
Essential AI for daily productivity.
- 500,000 Tokens (Standard Usage)
- GPT-5
- Basic Summaries & Translation
- Single User Only
Pro
Advanced tools for high-volume professionals.
- 1,000,000 Tokens (Power Usage)
- Advanced Improvement
- Perfect Native-Level Writing
- Single User Only
Business
Collaborate and scale with your team.
- 7,500,000 Tokens (~Shared Pool)
- Includes 5 Team Seats
- Shared Prompts & Billing
- No Wasted Credits
Enterprise
Scale and compliance for larger organizations.
- 50,000,000 Tokens (Shared Pool)
- Includes 25 Team Seats
- Processing Log + CSV Export
- Priority Contact
Need more than 25 seats or 50M tokens?
Custom volume contracts, dedicated infrastructure, and tailored SLAs for large organizations.
Ready to upgrade your workflow?
Stop switching tabs. Experience the power of GPT-5 with zero content retention. Join professionals who save 10+ hours a week.