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.
Six things, on demand.
Nothing runs on its own. You ask, Kerna answers, and nothing you send is kept afterwards.
28%
of the working week goes on email
McKinsey Global Institute, 2012
121
business emails a day, per person
Radicati Group, 2022–2026
23 min
to refocus after one interruption
Gloria Mark, UC Irvine
Kerna does not change how much arrives. It changes what you have to do with it.
Work it out on your own numbers
Three questions about your week. The minutes are not ours to invent, so each one is sourced under the slider it belongs to.
8 min each · ~1,800 words at 238 wpm — Brysbaert, meta-analysis of 190 studies
5.5 min each — Slack study of 8,000 employees, 2023, which found 112 a week
8 min each · data capture only; full manual invoice touch time is ~12 min — Ardent Partners, APQC, IOFM
EU average is €34.90 — Eurostat, 2025
4.9
hours a week
€741
a month
Kerna Standard is €12 a month. On your numbers that leaves €729 a month.
Kerna reads the thread, writes the first draft and lifts the fields out of the attachment. We count that at 60 per cent of the time above, not all of it, because you still read and adjust everything it produces.
Sort the inbox in one click
Five categories are built in. Replace them with a set of your own, or start from one of 20 taxonomies built for your industry.
One pass instead of opening every message
Attachments become a table
Pick the document you are looking at and the fields are already defined, for the documents most common in each of 20 industries.
No retyping, no second pass over the file
45
languages, names included
Grammatical name and address forms corrected in every one of them.
No translator in the loop
Your email is not training data
Hosted in the EU. Zero content retention, contracted with OpenAI at organisation level, for every plan including the free one. Personal data is redacted before anything reaches the model.
Nothing to delete later, because nothing is kept
Say it the way you meant to
Still your words, just the ones you meant
It runs where you already work
No new tab, no copy-paste, no separate app to learn. Both add-ins are live on their marketplaces.
Nothing new to learn
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.
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. Replace those with categories of your own, or start from one of 20 taxonomies built for your industry.
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.
Turn attachments into a clean table.
Kerna pulls the fields you choose out of an attachment and into a clean row, then exports the table — Google Sheets or Docs in Gmail, Excel or Word in Outlook. In Outlook it runs across every file in a thread at once.
3 attachments
Fields to extract · tap to toggle
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
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
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