Kerna vs Remail
Kerna
kerna.io
Remail
remail.aiSide by side
| Figure | Kerna | Remail |
|---|---|---|
| Price from | €12/mo | $0.54/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Plans published | 5 | 7 |
| Spec score · AI Email Assistants | 8.3 (#11) | 7.6 (#29) |
| Spec score · AI Email Writing Tools | 8.2 (#11) | 7.6 (#21) |
| Integrations | Kerna integrates with Gmail, Outlook, Calendar, Contacts and Sheets, and the pricing page lists shared mailboxes for Outlook. | The pricing page lists a Gmail extension and plugin and says users can add Calendly, Cal.com, or Cron links to email replies. |
| Languages | Kerna offers translation in 45 languages for inbound messages and outbound replies. | Remail says its email assistant supports 40+ languages and can detect incoming email language and reply in the same language. |
| Product | Kerna is an AI email assistant that works inside Gmail and Outlook. | Remail describes itself as an all-in-one AI assistant for email, chat, reading, writing, image generation, and comparing AI model responses. |
Plans
Kerna
- StarterFree
- Standard€12 a month
- Pro€22 a month
- Business€69 a month
- Enterprise€499 a month
Remail
- Pro$6.50 a year
- Pro$9 a month
- Unlimited$14 a year
- Unlimited$19 a month
- Team$69 a year
- Team$99 a month
- Team+$159 a year
In their own words
Kerna
Kerna is an AI email assistant for Gmail and Outlook on macOS, Windows, and the web. At a user’s request, it sorts open messages into categories such as Urgent, Respond, Invoice, Waiting, and Notification; users can also set custom categories and industry taxonomies. It drafts replies based on the full thread, with controls for intent and tone, and makes structured thread summaries for conversations of up to 50 messages. It can summarize attachments, extract selected fields into exportable tables, and translate inbound messages and outbound replies in 45 languages. Integrations include Calendar, Contacts, and Sheets as well as Gmail and Outlook. Kerna says it acts only when a user initiates a request, processes content in memory, discards it afterward, and redacts personal data before it reaches the inference provider. Its trust information reports TLS 1.2 or higher in transit and AES-256 encryption at rest. Kerna has a free plan; paid plans start at €12/mo. Outlook requires a Microsoft-hosted mailbox; POP or IMAP and on-premises Exchange are unsupported.