The Spently app already automatically adds UTM tags to each of your email notifications. These UTMs can be used to track performance in your Google Analytics, and they are also used to display Marketing Events in your Shopify Admin. Since these marketing events rely on these specific UTMs, they can not be edited or changed.
Here is a list of all the UTMs we append to links in your emails:
Order Confirmation: UTMCampaign=Spently%20Order%20Confirmation%20
Email&UTMMedium=notification_email&UTMSource=spently
Order Cancelled: UTMCampaign=Spently%20Order%20Cancelled%20 Email&UTMMedium=notification_email&UTMSource=spently
Order Refund: UTMCampaign=Spently%20Refund%20 Email&UTMMedium=notification_email&UTMSource=spently
Draft Order Invoice: UTMCampaign=Spently%20Draft%20Order%20 Email&UTMMedium=notification_email&UTMSource=spently
Abandoned Checkout: UTMCampaign=Spently%20Abandoned%20Checkout%20 Email&UTMMedium=notification_email&UTMSource=spently
POS Receipt: UTMCampaign=Spently%20POS%20 Email&UTMMedium=notification_email&UTMSource=spently
Shipping Confirmation: UTMCampaign=Spently%20Shipping%20Confirmation%20 Email&UTMMedium=notification_email&UTMSource=spently
Shipping Update: UTMCampaign=Spently%20Shipping%20Update%20
Email&UTMMedium=notification_email&UTMSource=spently
Shipment Out for Delivery: UTMCampaign=Spently%20Shipment%20Out for%20Delivery%20Email&UTMMedium=notification_email&UTMSource=spently
Shipment Delivered: UTMCampaign=Spently%20Shipment%20Delivered%20 Email&UTMMedium=notification_email&UTMSource=spently
Account Invite: UTMCampaign=Spently%20Customer%20Account%20Invite%20 Email&UTMMedium=notification_email&UTMSource=spently
Customer Account Welcome: UTMCampaign=Spently%20Customer%20Account%20Welcome%20 Email&UTMMedium=notification_email&UTMSource=spently
Follow-up Emails: UTMCampaign=Spently%20Follow%20Up%20 Campaign&UTMMedium=followup_email&UTMSource=spently