Utm6 is a platform based on Google Analytics, thus it's very important to fully understand how it works in order to leverage the best of utm6. Don't worry it's not so complicated.
A GA Account represents a business, it contains as many Properties as you like. A Property represents a website/app. And every Property can have up to 25 Views.
By default, your property will only have 1 View with no filters. It's up to you to create another View with some filters (i.e: to only see signed in users, a specific region of the world...).
They are always tied to the visited domain name (i.e: yourwebsite.com), and attached to every HTTP requests sent to its domain. It means, website A can't read the cookies of website B.
Cookies can have a lifespan of a session (until you close the window) or up to 2 years.
If the same visitor comes back to your website few days later, the "client ID" cookie will help Google Analytics knowing it's the same person.
There are some limitations though, when the visitor uses a different browser or device, the "client ID" cookie is not available, and Google Analytics will consider it as a new visitor.
It is possible to track your users cross-device, as long as they are connected on both devices and their "user ID" is sent to the GA tracker. The probability that your users sign in on all their devices is pretty low though... most of the time they will just sign in before buying on one device.
When you click on a website link, your browser tells to the new landing page, what was the previous page you came from. This is the referral URL.
On top of the Referral, in order to add some context to your traffic, Google Analytics introduced the following utm parameters:
Because the utm_source & utm_medium parameters are mandatory, Google Analytics uses the referral URL to automatically set them for you with utm_source=domain.com & utm_medium=referral. If there is no referral URL available, the default source / medium will be "(direct) / (none)".
|Referral||Landing page||Data sent to GA|
Using utm_ parameters are crucial while sending email campaigns. Because your customers use different email clients, the traffic sources will be mail.google.com, mail.yahoo.com, mail.live.com etc...
To avoid splitting your traffic coming from your email marketing, you have to customize the links contained in your email by overriding their source/medium with utm parameters like this: