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Set up AI

Add your own AI key and use reply suggestions, translation and grammar.

Astreo assists your writing with AI — reply suggestions, translation and grammar, always as an editable draft, never auto-sent. In the AI settings you set the provider, model and your preferred style. This guide walks you through the setup.

Settings → AI settings: provider, model, translation and style guidance — Settings → AI settings: provider, model, automatic translation and style guidance.

1. Open the AI settings

Open the Settings via the avatar menu (top right).
Switch to the AI settings tab.

2. Choose provider & model

Under Provider, pick the right service, e.g. "OpenAI-compatible (OpenAI / OpenRouter / DeepSeek)" or Anthropic.
Enter the desired model (e.g. openai/gpt-4o-mini on OpenRouter or deepseek/deepseek-chat).

Note on the API key: the key is configured server-side, not in this form — for self-hosting in the server configuration, for the managed service by the provider. That keeps the key secure and out of the browser.

3. Translation & style guidance

Auto-translate incoming mail: enable if foreign-language mail should be translated directly — otherwise you translate each mail by click.
Target language: e.g. German (or "Automatic").
Style guidance: short hints that flow into every suggestion — e.g. "always formal, friendly and concise, with a sign-off" for replies, or "formal tone, keep technical terms unchanged" for translations.

Don't forget to save.

4. Use the features

Reply suggestion: creates a draft from the thread that you edit.
Translate: translates a message or your reply draft.
Grammar: smooths style and grammar before sending.

All outputs are drafts — sending stays your deliberate decision.

5. Privacy & cost

Only the needed context goes to the AI (the relevant thread/excerpt), not the whole mailbox.
No auto-send: the AI never writes to customers on its own.
Cost arises directly with the chosen provider (BYO key) — transparent, with no markup by Astreo.

Background: AI features.