@Burk my kingdom for a power user email client!

• Compose email in Markdown, send as multipart with HTML/Markdown.
• Snoozing that doesn't require that I authorize some random company to read all my email.
• Built-in, first-class support for encryption.
• Powerful scripting. Lua, JavaScript, Python, whatever, I don't care.
• macOS Native, not some Electron monstrosity.

I'd pay $200/year for this. No kidding.