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FlowRelay: Send Email via Flow
- by IE Aleksei Kulikov
- Free plan available
- by IE Aleksei Kulikov
- Free plan available
Send transactional emails through Shopify Flow using your own email provider or SMTP, with automatic fallback and delivery tracking.
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About the 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. Send as your brand with custom sender name, address, and reply-to settings.
Launched: May 18, 2026
Key features
- Send emails from Shopify Flow workflows via API key or SMTP from your own domain
- Set a primary and backup provider — switches automatically if the primary fails
- See whether each email was delivered, bounced, or reported as spam
- Customize subject, preview text, and body with Liquid variables
- Send as your brand with a custom sender name, address, and reply-to
Integrations with:
- Shopify Flow,
- Shopify Admin,
- Custom SMTP servers,
- Mailgun,
- Postmark,
- Resend,
- SendGrid,
- SMTP
Category:
Pricing of FlowRelay: Send Email via Flow
Free
Free
- 50 emails/month
- All providers
- 3-day sent email log
Starter
$9.99 / month
- 500 emails/month
- All providers
- Fallback provider routing
- 30-day sent email log
- Email support
Growth
$29.99 / month
- 2,500 emails/month
- All providers
- Fallback provider routing
- Delivery status tracking
- 90-day sent email log
- Email support
Scale
$49.99 / month
- Unlimited emails
- All providers
- Fallback provider routing
- Delivery status tracking
- 180-day sent email log
- Priority processing
- Email support
