Kerna's IntelligencePowered by OpenAI.
Kerna reads the whole conversation, drafts your reply in your own tone, and lifts out what is actually in there — the dates, the tasks, the things you promised people. It reads the attachments too, and on demand sorts what is waiting into Urgent, Respond, Invoice, Waiting and Notification. In your inbox, in 45 languages.
Serious capability, no compromises.
Frontier reasoning, zero data retention, and 45 languages — the foundation under every email Kerna handles, hosted in the EU.
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 inbox sidebar.
Read it in your language. Reply in theirs.
Kerna translates the email you received, the reply you're drafting, or a brand-new message — into any of 45 languages, tuned per language and matched to your tone.
Send reply in · tuned per language
A finished draft from a one-line brief.
Choose one of 200 industry-aware templates, add a sentence of intent, and Kerna writes the whole email — structure, tone, and detail handled.
Template · 200 briefs
Say it the way you meant to.
Turn a rushed draft into something that lands — clearer, tighter and better pitched — in one click, and review it before it sends.
Quick improve · meaning preserved
Read the thread without reading the thread.
Kerna condenses a long conversation into a clear summary — in three levels of detail, from a one-line gist to a thorough recap.
Summary detail · 3 levels
Replies that already know the thread.
Pick an intent and a tone — Kerna reads the prior messages and drafts a reply that stays relevant, polite, and unmistakably yours.
Reply intent · 8 intents + tone
Never re-type a date, contact, or task again.
Kerna pulls the dates, people, and to-dos buried in a message and lets you drop them straight into Calendar, Contacts, and Tasks.
Detect · tap to toggle
Sort your inbox the moment you need to.
Kerna groups your open messages into Urgent, Respond, Invoice, Waiting, and Notification — only when you ask, never scanning in the background.
Triage · on demand
Get the gist of any attachment.
Kerna reads the file in your thread and hands back the key points — no opening, scrolling, or skimming. It runs only when you ask, never in the background.
Summarise · on demand
- Revenue up 18% QoQ, led by EU expansion.
- Two Berlin hires approved for Q4.
- Q4 priorities: onboarding automation, churn reduction.
- Decision needed: renew hosting contract by 15 Jul.
Even more in Outlook.
Everything Kerna does in Gmail comes to Outlook too — plus attachment extraction that exports straight to Excel.
Kerna for Outlook requires a mailbox hosted by Microsoft: Outlook.com, Microsoft 365, or Exchange. Microsoft does not load add-ins on accounts connected over POP or IMAP.
Turn attachments into a clean table.
Kerna reads each file in an Outlook thread and pulls the fields you choose into one row per file — then exports the table straight to Excel.
3 attachments
Fields to extract · tap to toggle
Ready to upgrade your workflow?
Stop switching tabs. Experience the power of GPT-5.6 with zero content retention. Join professionals who save 10+ hours a week.