&gt; services should allow me to easily create lots of aliases. Right now the best defense against social engineering seems to be my fastmail account which allows me to create 1 email address alias per service<p>What you may want is a catch-all email - which lets you do <i>@domain.com -&gt; nmjohn@domain.com (where </i> is everything besides already defined addresses) - that way you can make up emails on the fly without having to setup the alias beforehand.<p>I&#x27;ve had that setup for 5 or 6 years now, and it works extremely well. A handy side-effect of this is it makes it easy to see which companies sell your email address to spammers when you included the name of the original company in the email you register with