Currently, the “Submit fulfillment request” action in Shopify Flow only works with app-based (third-party) fulfillment services. It does not support custom fulfillment services (email-based).
For stores that use multiple custom fulfillment services — for example, my gift shop with dozens of individual suppliers each set up as a custom fulfillment service — there is no way to automate the fulfillment request process via Flow. This means every order has to be manually actioned.
The workaround is to use a “Send internal email” action as a prompt to manually press “Request fulfillment”, which partially solves the problem but still requires manual intervention for every order.
Requested improvement: Allow the “Submit fulfillment request” action in Shopify Flow to work with custom (email-based) fulfillment services, so that workflows can automatically trigger fulfillment requests without manual steps.
This would be particularly valuable for stores managing many individual suppliers or makers, where automation would save significant time.
Thanks so much for your time.
