How many different email addresses do you have and why?

Probably 75+ at a guess.....
Got at least 15 active domains in gsuite plus a number of dormant ones without any emails, with around 5 aliases I use on each active domain.

Only regularly use around 10 or so, some domains I default to a personal address, some a generic, some I have but don't use myself.

Track my emails easily since a single login and inbox with gsuite.
Track my external accounts across all domains with lastpass.

• Basically infinite emails but only two inboxes I check regularly - I have wildcards set up at a couple domains that all feed into the same inbox and a personal gmail. (I also have some old accounts like one at hotmail, but I don't check them regularly.)

• 80% of the time, I give out my "official/main" email but I keep the wildcards so I can create emails on-demand for services I don't trust as much (like wifi hotspots with a signup wall) so I can later blackhole their emails if they spam me.

• I often do, yes, for the reason listed above.

• 1password is where I track everything.