I have a formula (service name)-(local slang)(three random numbers)@mydomain.ca that way I can use free trials if I still need the service (I have only done this 2 or 3 times, not saying that I wont do it again but hey when in Rome) it also allows me to have multiple accounts with the same service for different purposes.

If I use a service than stop, forget about it. The email is almost definitely going to be sold so when I get spam I will close the address, if I stumble upon the service again and think oh cool I should try this vaultwarden via bitwarden may say here are your sign in credentials I will try signing in and it will tell me this account is no longer active so I need to create a new one.

My orignal plan was (service name)@mydomain.ca but than I came across the wanting extended free trial so I thought (service name)2@mydomain.ca, some are fine with that some are not. I like throwing in the fluf just to keep bots off of my trails.