Multiple opens per user per day

[anpa7992]

Dear community,

I noticed that some users open multiple emails (e.g. one user opened 90 past emails) in one day at the same time:

How can this be? 

Is it a user who marked emails as read without opening them? Or a bot?

Thank you for your replies!

[SanfordWhiteman · Accepted solution]

A mail scanner routinely rescanning items already delivered.

[anpa7992]

Can I somehow exclude this from campaigns? 

[SanfordWhiteman · Accepted solution]

Sorry, no.