Reply-To and From name

Each Send Transactional Email step in Shopify Flow can set two optional fields:

Field	What it does	Example
Reply-To	Where replies go instead of the sending mailbox. Up to 5 addresses, separated by commas	[email protected]
From name	The sender name recipients see, for this step only	Acme Support

Both accept Flow variables, for example a Reply-To of {{order.customer.email}} for an email sent to your team.

They work with SMTP servers, Microsoft 365 and Google. The From address itself always stays the address of the sender you picked, so the email passes SPF and DKIM checks.

If a Reply-To value is not a valid address when the step runs, the email is not sent and History shows why. History also records the Reply-To and From name each email used, and a resend from History uses them again.