## Voice memos & audio

Use `audioAttachmentUrl` to send audio files as voice memos. The following formats are supported.

`M4A`, `MP3`, `WAV`, `OGG`, `WebM`, `CAF`

> **AI voice memos**
>
> Set `enableAiVoiceMemo` to `true` and include a `message` to generate a natural-sounding voice memo via text-to-speech. No audio file needed — we generate it for you.