Why User Filters is not working when i receive a e-mail report ?

Why User Filters is not working when i receive a e-mail report ?

I Create a panel with lot of pivot tables, and in all of then have user filters to show only the last 3 months.

After i create a daily e-mail report with this panel, but in e-mail i receive all data, and not only the last 3 months.

How can i get the same in e-mail of i see on web ?