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Re:Removing email registration improved retention by dsr_ on Thursday September 10, 2020 @12:32PM (#24433863)
Don't bother. If you collect email addresses, it's PII and someday you will have to account for that.

Instead, give them a searchable FAQ or a wiki and an email address to write to for support. Connect it to a ticket system that autoresponds with a ticket number.

(then you added your second paragraph while I was writing this.)

Re:Removing email registration improved retention by londons_explore on Thursday September 10, 2020 @12:43PM (#24433992)
I get users to email a personalized support email address.

Eg. [email protected]

The support team can figure out which account or anonymous cookie saw that email address.

It's a handy way to still communicate directly with users while holding as little PII data as possible about them.

Re:Removing email registration improved retention by gen220 on Thursday September 10, 2020 @12:48PM (#24434049)
This is really clever! Thank you for the idea.
Re:Removing email registration improved retention by tapneal on Thursday September 10, 2020 @01:47PM (#24434729)
We're hoping to test an email password recovery option after the account is set up. It builds on the idea of getting more information after commitment.