View your subscriptions, opt-out as needed
VSTS | TFS 2018 | TFS 2017.1
If you want to stop receiving select email notifications, you can do so by unsubscribing from them. For a description of each default subscription, see Default notifications
You start by opening your personal notification settings. If you don't have a team project yet, create one in VSTS.
From the web portal, click the icon with your initials or picture icon, and select Notification settings from the drop-down menu.
Those notifications you're subscribed to are indicated with the the State as On.
The following image indicates a subscription is a default or Out-of-the-box (OOB) subscription:
You can't modify an OOB subscription, but you can view its definition from its context menu.
To unsubscribe, slide the State On/Off indicator to the Off position.
For example, here we turn off the Build completes subscription.