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4 days agoFair use requires you to analyze or comment on the work or transform the original work in some way, non-commercial use isn’t enough on its own.
The real reason it’s “ok” is that it’s unlikely the owner would be able to prove damages from someone using their image as an avatar so it’s not worth taking anyone to court over it because all they would get is the judge ordering them to stop and a C&D is cheaper if the owner really cares about stopping you.
But what’s supposed to make a potential customer excited about that? Looking at your page, all I see is what you call labels, extensions to your email address separated by a “-” which seem identical to the “+” addressing supported by most big email services except that you automatically set up rules to bounce emails sent to the home label instead of the user needing to manually set that up.
Maybe this works some clever way under the hood but nothing on your site really tells me why I should be interested or excited about it. Every email provider advertises that they have some “unique” solution to spam and most of these work well enough for most people so you need more than just that to have a good selling proposition when you’re not priced competitively.