# Customize AI

Filo lets you define the exact instructions its AI follows when it writes _Summaries, Drafts, Quick Replies and Smart Filter_. One saved prompt = one consistent style across every message.

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### What you can tell it to do

- •**Shape summaries** – "Summarize in 1–2 sentences" or "Return 3 bullet points with action items first."
- •**Tweak drafting tone** – "Write polite but concise replies, ~120 words, end with 'Best regards,'."
- •**Force classification** – "Always mark emails from <boss@filomail.com> as Important" or "Move messages containing 'invoice paid' to Updates."

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### Prompt-writing tips

- •**Be explicit and concise.** Short, direct instructions work best.
- •**Include formatting cues.** Markdown like **bold**, bullet lists, or numbered steps is respected.
- •**Combine rules freely.** One prompt can cover summaries, drafts, and categorization in any order.

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### Example all-in-one prompt

```
• Summarise threads in 2 bullets; list action items first.
• Draft replies: friendly business tone, ≤120 words, end with "Best regards,".
• Auto-categorise any email from boss@example.com as Important.
```

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### Updating or resetting

- •Edits apply instantly across every AI interaction.
- •Delete your input to restore Filo's built-in prompt at any time.

Define it once—Filo handles the rest.

Ask AI

Ask me anything about Filo Mail. I can help you with setup, features, and troubleshooting.

What is Filo Mail? How do I set up Smart Filter? What keyboard shortcuts are available? How does AI Summary work?