Last active from contact

Hi,



I would like to know how’s the “last active” in Contact list works?



I was thought that it is the contact which open the email campaign before, but when I was checking the email list, just found out that the email addresses are not exist or wrong.



for example:

xxxxx@gmai.com

xxxx@putlook.com

xxxx@gmil.com



Thanks.

Hi,

I would like to know how’s the “last active” in Contact list works?

I was thought that it is the contact which open the email campaign before, but when I was checking the email list, just found out that the email addresses are not exist or wrong.

for example:
xxxxx@gmai.com
xxxx@putlook.com
xxxx@gmil.com

Thanks.