Emily Lane
April 30, 2026

Explore email-safe fonts and background color options in the new Courier Designer to create consistent, polished, and on-brand email experiences.
Learn more: Fonts documentation · Email Safe Formatting guide · see what fonts work in email

Send rate limits for providers
Send to Courier at any rate. Courier sends to each provider at the rate you set.
By Emily Lane
October 21, 2026

Preference webhooks and change history API
Get every preference change as a webhook, and read the full history by API.
By Emily Lane
October 14, 2026

Cross-Device Email Preview
Preview email templates on real devices, 96 clients across 21 apps, right from Design Studio.
By Emily Lane
September 01, 2026