Deactivating email tracking
We mistakenly installed Track, which provides tracking details about your Gmail messages. Although I’ve now deleted the app, it gets into your Contacts and creates duplicate entries, and seems to have altered our email addresses too. How can we repair this damage?
The app you installed by mistake is a service which works by diverting all your email messages via its own servers so it can track them for you. To accomplish that it modifies addresses stored in Contacts and accesses your Gmail account. It should have a feature to rectify those before disabling the service and deleting it, but you’re probably reluctant to reinstall it to find out.
You should be able to fix these issues manually. First, log onto your Gmail account and withdraw your permission to give that app access to your account, in the Access Granted to Third Parties section. That should stop any further redirection being performed on the Gmail servers.
The other and more laborious task is to work through all the entries in Contacts stripping out email addresses like jsmith@mail.com.trackapp.io, leaving only their originals. If you have many to correct, spend a little time planning how best to do this efficiently. If you normally share your Contacts in iCloud, those changes will have propagated to all your computers and devices which share that account. It’s then best to leave sharing turned on, so that corrections made on one system will be reflected on them all. You may also wish to perform this task on your Mac or iPad rather than on an iPhone’s smaller display.