1) Yes, I send out emails to users FIVE times before deleting the record (unless I see that it is a bad email address, which I will delete outright).

Average # of non-validated users per day: 5
Average # of new users per day: 10

2) Percentage of bad email addresses: less than 5%

3) Percentage of "equipment failure": less than 10%

4) Percentage of "non care users": difficult to answer, what do you mean?
========================================
Buh Bye!

Cheers,
Me