Kerna vs MailSome

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.

MailSome is an AI email writer for Gmail, available through a browser extension and the web. It reads the current email thread and places contextual suggestions in Gmail’s reply field. You can choose neutral, friendly, critical, formal, or casual tones, then correct, rephrase, or translate text. Replies are available in German or English, while the PRO plan is described as multilingual. The free service provides five emails each day without signup. A 14-day PRO trial is available without commitment. PRO costs €9 a month and includes unlimited AI replies, multilingual support, updates, and priority support. The homepage says registration and storage are not required and describes user data as private and secure. MailSome appears automatically in Gmail after installation. It is made by Campus IT Consulting GmbH in Grünwald, Germany.