How do I include audio in my newsletter?

Buttondown doesn't support native audio uploading like we do with images, nor do we have active plans on supporting it.

However, we do have integrations with many other platforms, including:

• Soundcloud,
• YouTube
• Transistor
• Spotify
• Vimeo

Your best bet at the moment is to upload your audio to one of those platforms and then plop it into your newsletter.