I too went through a test case and never received any e-mail notification after this commit completed successfully. I added a dummy custom item to the order and committed it. Saw the transaction in the web admin order timeline, with the added order item along with a test note. But no e-mail was triggered. Perhaps someone from Shopify’s team can chime in?
It worked when I just tried again. I originally hadn’t defined the notify flag in the correct place. This fired off the e-mail notification as expected. All good!
mutation orderEditCommit($id: ID!) {
orderEditCommit(id: $id, notifyCustomer: true) {
order {
id
}
userErrors {
field
message
}
}
}