Kerna
Kerna: A broad email workflow assistant for multilingual drafting, triage and extraction. Ranked #6 of 28 in AI Email Writing Tools by our editors (7.8/10); pricing: Free plan; best for multilingual email and inbox workflows.
At a glance
- Editor score7.8 / 10
- PricingFree plan
- Best forMultilingual email and inbox workflows
- Free planYes
- Paid from€12/mo
- Tone controlsYes
- Facts checked20 Sep 2026
Where it wins
- Drafts replies and new messages with selectable tones and intents
- Translates email in 45 languages and summarizes threads
- Extracts data from emails and attachments for export to common office tools
Where it doesn't
- Starter, Standard and Pro plans are limited to one user
- No browser extension is listed among its supported features
- Usage is governed by monthly token allowances or shared token pools
Our verdict on Kerna
Kerna is an AI email assistant for people and organizations working in Gmail or Outlook. It drafts replies from email threads, composes new messages from topics or saved instructions, summarizes conversations, translates email in 45 languages and sorts inboxes with custom or industry categories. It also extracts dates, contacts, tasks and fields from messages and PDF, DOC or XLS attachments. Gmail, Outlook, Google Calendar, Google Contacts, Google Sheets and Microsoft 365 are supported across web, Windows and macOS.
The plans scale from individual use to team administration. Starter costs €0 per month and includes 50,000 tokens, GPT-4, basic reply functionality and a single-user license. Standard costs €12 per month with 500,000 tokens, GPT-5.6, basic summaries and translation for one user. Pro costs €22 per month with 1,000,000 tokens, advanced improvement and native-level writing. Business costs €69 per month and includes 7,500,000 shared tokens, shared prompts and billing, team member management and five team seats. Enterprise costs €499 per month with 50,000,000 shared tokens, processing logs, CSV export, priority contact and 25 team seats.
Its broadest advantage is the connection between writing and inbox operations. Users can control reply tone and intent, translate messages, triage mail, and move extracted information into Sheets, Docs, Excel, Word or CSV. That makes Kerna a strong fit for multilingual workflows that also involve attachments, contacts, dates or tasks. Individual users should compare the token allowances with their volume, while teams needing shared billing and member management should look at Business or Enterprise. Kerna is less suitable for users who specifically require a browser extension or want multi-user access on an individual plan.
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Kerna pricing
All 5 Kerna plans and prices →
Kerna fact sheet
| Free plan | Yes |
|---|---|
| Paid from | €12/mo |
| Tone controls | Yes |
| Custom instructions | Yes |
| Email context input | Thread |
| Browser extension | No |
| Mail client support | Both |
| Supported languages | 45 languages |
| Deployment | Cloud |
| Platforms | Web, Windows, macOS |
| Compliance & security | GDPR |
| Support | Email, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 6 integrations: Gmail, Outlook, Google Calendar, Google Contacts, Google Sheets, Microsoft 365 |
| Pricing | Free plan (source) |
| Website | kerna.io |
| Facts checked | 20 Sep 2026 |
Kerna integrations
Kerna lists 6 integrations on its own site.
- Gmail
- Outlook
- Google Calendar
- Google Contacts
- Google Sheets
- Microsoft 365
Alternatives to Kerna
- WPS AI Email WriterA free, unlimited prompt-based drafter for common email messages across six platforms.9.1
- MailMaestroA practical AI assistant for writing, organizing, and following up across Gmail and Outlook.8.8
- LavenderA sales-focused email coach with drafting, scoring, personalization, and team coaching.8.5
Kerna vs the competition
- Kerna vs WPS AI Email Writer
- Kerna vs MailMaestro
- Kerna vs Lavender
- Kerna vs Workforce AI Email Drafter
- Kerna vs ForthWrite
- Kerna vs Demi
Compare Kerna with any tool side by side →
Also Ranked In
Kerna is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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