The medical world uses the terms indications and contraindications. I think we in IT could do with a similar process/procedure.
For example, my only used by Claude email address doesn't get any spam at all.
It can take a while for spammers to get your address on their list. Generally the amount of spam over time only goes up. Just because there's a correlation doesn't mean there is a causation. Anyone with an email address, including on a custom work domain, has experienced this and Claude wasn't responsible for all email spam lol
98% I look at a LinkedIn profile, my $SALES_LEAD Chrome extension shows me their email + phone.
(To be clear, not from LinkedIn, but given their name/city/company.)