From: Shopify

How to disable order notifications for staff members?

Avoid flooding your mailbox during order migrations

When migrating orders to Shopify, your customers won't receive any notifications for migrated orders. However, you will receive notifications! Luckily, it's easy to switch off. Go to your Shopify admin and click the following links:

1. Click 'Settings' in your Shopify Admin (bottom left)

Shopify Settings

2. Click 'Notifications in the left menu

Shopify Notifications

3. Click 'Staff notifications'

Shopify Staff Notifications

4. For each recipient, click the three dots and click 'Turn off'

Shopify Staff Notification Recipients

Once your Shopify order migration is complete, you can follow the same steps and use step 4 to 'Turn on' the notifications again.