Kerna

7.0easy start · #9 of 46
in AI Email Assistants

Free to practise onyes
Free trialnot on record
Well documentedyes
Runs where you workyes

Runs on Mac, Web, Windows. Paid plans from €12/mo.

Kerna is ranked #9 of 46 in AI email assistants on The Geeks Club. It runs on macOS, Web, Windows. There is a free plan. Paid plans start at €12/mo.

Kerna plans and pricing

All plans

Starter Free 30,000 Tokens (Trial Volume) · GPT-5.6 · All features · Single User License kerna.io · 29 Sept 2026

Standard €12/mo Monthly 500,000 Tokens (Standard Usage) · GPT-5.6 · All features · Single User Only kerna.io · 29 Sept 2026

Pro €22/mo Monthly 1,000,000 Tokens (Power Usage) · GPT-5.6 · All features · Single User Only kerna.io · 29 Sept 2026

Business €69/mo Monthly 7,500,000 Tokens (Shared Pool) · Includes 5 Team Seats · Shared Prompts & Billing · No Wasted Credits kerna.io · 29 Sept 2026

Enterprise €499/mo Monthly 50,000,000 Tokens (Shared Pool) · Includes 25 Team Seats · Processing Log + CSV Export · Priority Contact kerna.io · 29 Sept 2026

Compared on AI email assistants

Free plan: Yes

Best Kerna alternatives

See all 20

Mailbutler Smart Assistant 0 of 4 in the starter kit Lesson 18.0 Spark +AI 0 of 4 in the starter kit Lesson 27.7 Superhuman Go 0 of 4 in the starter kit Lesson 37.7 Perplexity 0 of 4 in the starter kit Lesson 47.6 MailMaestro 0 of 4 in the starter kit Lesson 57.5 MailWise 0 of 4 in the starter kit Lesson 67.4

The record

Product: Kerna is an AI email assistant that works inside Gmail and Outlook.
Inbox triage: On request, Kerna sorts open messages into Urgent, Respond, Invoice, Waiting and Notification, with custom categories and industry taxonomies available.
Email drafting: Kerna drafts context-aware replies using the full thread history and lets users choose an intent and tone.
Summaries: Kerna creates structured summaries of email threads, with the About page specifying threads of up to 50 messages.
Attachments: Kerna summarizes attachments and extracts selected fields into tables that can be exported to files.
Languages: Kerna offers translation in 45 languages for inbound messages and outbound replies.
Integrations: Kerna integrates with Gmail, Outlook, Calendar, Contacts and Sheets, and the pricing page lists shared mailboxes for Outlook.
User control: Kerna says it only processes content when a user initiates an action and does not scan the inbox in the background.
Privacy: Kerna says email content is processed in memory and discarded after the request, with personal data redacted before content reaches the inference provider.
Security: The trust page reports TLS 1.2 or higher in transit and AES-256 encryption at rest in Firestore.
Assurance: Kerna reports CASA Tier 2 validation for its Gmail add-on and describes Microsoft Publisher Attestation as a self-assessment, not an independent verification or Microsoft 365 Certification.
Outlook requirements: Outlook requires a Microsoft-hosted mailbox; POP or IMAP connections and on-premises Exchange mailboxes are unsupported.
Intended users: Kerna describes itself as email automation for professionals and offers team plans for collaboration and larger organizations.
Headquarters: Katowice, Poland
Price from: €12/mo

Where it ranks on The Geeks Club

Best AI Email Assistants in 2026#9 of 46
Best AI Email Writing Tools in 2026#6 of 28

Is Kerna yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote Kerna

Sources

kerna.io/about· checked 29 Sept 2026
kerna.io· checked 29 Sept 2026
kerna.io/trust· checked 29 Sept 2026
kerna.io/pricing· checked 29 Sept 2026