FlowRelay: Send Email via Flow

FlowRelay adds a Send transactional email action to Shopify Flow, letting you send custom emails through your own email provider or SMTP server. Connect via API key using providers like SendGrid, Resend, Mailgun, or Postmark, and send from your own domain. Customize email content with Liquid variables to include order details, customer names, or any workflow attribute. Set up a primary provider with automatic fallback to a backup if delivery fails. Track delivery status for every email—see if it was delivered, bounced, or marked as spam. Perfect for order confirmations, account notifications, internal alerts, or any custom transactional email. Brand your messages with custom sender name, address, and reply-to fields.