In Users & Sessions > User Look-up > Search Users, if I use advanced search to find a user by email, I find 2 or more (up to 16) Amplitude IDs mapped to the same email. It’s one person, and I assume this is due to use on separate devices (although 16 does seem odd, it’s just one person). I assume Amplitude is counting Amplitude IDs not unique emails, for MTUs. The result is almost 40% over-counting -- this is on a portal where everyone is logged in, so everyone has an email address.
Does this sound right? Is this a flaw in our implementation of Amplitude? Is there a way to still use Amplitude IDs but de-dupe tracked users so there is only one Amplitude ID per email? Or is that something I shouldn’t want for some reason?