Question 1

What is Kerna and how does it work?

Accepted Answer

Kerna is an AI-powered email assistant that runs directly inside Gmail as a Google Workspace add-on. Open any email, click the Kerna icon in the sidebar, and get instant translations, summaries, smart replies, and email composition — all in 45+ languages.

Question 2

How do I install Kerna?

Accepted Answer

Sign in with your Google account at kerna.io, then follow the prompts to add Kerna to your Gmail. It will appear as an icon in your Gmail sidebar. No downloads or browser extensions needed.

Question 3

Does Kerna work with Google Workspace / business accounts?

Accepted Answer

Yes. Kerna works with both personal Gmail and Google Workspace (business) accounts. Workspace admins can install it organization-wide or allow individual users to install it themselves.

Question 4

Why isn't Kerna showing in my Gmail?

Accepted Answer

Make sure you've completed the Google sign-in at kerna.io. The add-on may take a few minutes to appear. Try refreshing Gmail or checking Settings → Add-ons. If using a Google Workspace account, your admin may need to approve the add-on first.

Question 5

What languages does Kerna support?

Accepted Answer

Kerna supports 45 languages including English, Spanish, French, German, Polish, Japanese, Chinese, Arabic, Hindi, and many more. You can translate emails, compose in any language, and switch your UI language at any time.

Question 6

Can Kerna summarize entire email threads?

Accepted Answer

Yes. Kerna can fetch all messages in a Gmail thread and provide a summary in your preferred language. You can choose between brief (1–2 sentences), standard (3–5 points), or detailed summaries.

Question 7

What is Smart Focus Extraction?

Accepted Answer

Smart Focus lets you define custom fields to extract from emails — like ticket numbers, error codes, or tracking IDs. Kerna pulls out each data point automatically. You can configure your extraction fields in Settings.

Question 8

Can I save custom reply prompts?

Accepted Answer

Yes, on Pro plans and above. You can create reusable reply instructions (e.g., 'Decline politely and suggest next quarter') that appear in your tone/intent dropdown for one-click access.

Question 9

Does Kerna integrate with Google Calendar and Tasks?

Accepted Answer

Yes. Kerna can detect events and tasks in your emails, check your calendar for conflicts, and create events or tasks directly from the sidebar. It also integrates with Google Contacts and Sheets for recipient management.

Question 10

What's the difference between the plans?

Accepted Answer

Starter is free with 15,000 tokens and basic features. Standard (€9/mo) gives 100,000 tokens. Pro (€19/mo) unlocks GPT-5 models, custom prompts, and 500,000 tokens. Business (€49/mo) adds team management with up to 5 seats and 2,000,000 tokens. Enterprise plans are fully custom.

Question 11

What are tokens and how are they used?

Accepted Answer

Tokens measure AI usage — roughly 1 token per word processed. Every action (translate, summarize, reply, compose) uses tokens. Your monthly allocation resets on each billing cycle. You can track usage in your dashboard.

Question 12

How do I cancel or change my plan?

Accepted Answer

Go to Dashboard → Subscription and manage your plan. You can upgrade, downgrade, or cancel at any time. Cancellation takes effect at the end of your billing period — you keep access until then.

Question 13

Do you offer annual billing?

Accepted Answer

Yes. Annual plans are available at a discounted rate. You can switch between monthly and annual billing from the Subscription page in your dashboard.

Question 14

What payment methods do you accept?

Accepted Answer

We accept all major credit and debit cards through Stripe. Business customers can also provide a VAT/Tax ID during checkout for proper invoicing.

Question 15

Can I use Kerna with a team?

Accepted Answer

Yes. Business plans include team management with up to 5 seats sharing a token pool. Enterprise plans support up to 20 seats with custom token limits. Team leaders can add/remove members, set individual limits, and monitor usage.

Question 16

How does the shared token pool work?

Accepted Answer

On team plans, all members draw from a single token pool. The team leader can set individual limits per member or use a default allocation. Usage is tracked per member in the Team dashboard.

Question 17

What does the Enterprise plan include?

Accepted Answer

Enterprise plans offer custom token limits, up to 20 team seats, priority support, custom deployment options, and dedicated account management. Contact sales@kerna.io for a tailored quote.

Question 18

Is my email data safe with Kerna?

Accepted Answer

Yes. Kerna processes your email content ephemerally — it's analyzed in real-time but never stored on our servers. We operate under EU data protection standards with zero content retention. Your emails are never used for training AI models.

Question 19

Where are Kerna's servers located?

Accepted Answer

Kerna runs on Google Cloud in Europe (eu-west1). All data processing happens within the EU, ensuring compliance with GDPR and European data protection regulations.

Question 20

What Google permissions does Kerna need?

Accepted Answer

Kerna uses granular OAuth consent. Core features need Gmail read access. Optional features like Calendar sync, Tasks, Contacts, and Sheets integration each request their own permission — you choose which to grant.

Question 21

Can I delete all my data from Kerna?

Accepted Answer

Yes. Kerna provides a data deletion endpoint that removes your profile, statistics, and analytics data from all collections. You can also contact support@kerna.io to request a complete data purge.

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