Courier is the fastest way to design your notifications once and deliver them through push notifications, direct messages like Slack and Facebook Messenger, SMS, and email–with a single Courier API rather than having to integrate each provider API separately. Courier's Notification Designer empowers every team member to build beautiful notifications. Drag & drop content without writing code Consistent rendering across every email client Re-use content for any channel Consistent branding across all your notifications Route each message to the most effective notification channel using a robust delivery rules engine without touching your code. Drag and drop channel prioritization Always send settings "Best of" channel settings Courier Data Logs and Metrics give you insight into your notification performance across all channels. Find the best channel for each user Compare deliverability across multiple providers Detailed event log for every user on every channel