Email upgrades: engagement tracking, dark mode, and test sends

A wave of improvements across everywhere you write email in Helios.

The email template builder with the light and dark preview toggle

Open and click tracking: email blasts now report delivered, opened, and clicked, with per-recipient breakdowns on the blast detail page. Bounces and spam complaints are handled automatically so undeliverable addresses are skipped on future sends.
Dark mode emails: emails built with default colors adapt to the recipient’s dark mode, and the builder gains a light/dark preview toggle so you can check both before sending.
Social links in the footer: add your website, Facebook, Instagram, and X links once in inbox settings and they render as an icon row in every email footer.
Send preview: every email surface (template builder, blasts, and flow email steps) can send a test copy to your own address, merge tags included.
Email from the new message page: starting a conversation with a contact who has an email address now offers Send email right from the compose screen.