Yes, I did that single letter email way back around 2007-2008 and had it with my Bank (closed account for a company). Now, I can neither change nor login (not valid to them), and I have set a specific filter just to ignore that email from the Bank that keeps sending me newsletter and offers.
I don't use the short oin.am as my primary (which is oinam.com), I have it as a alias domain, allowing me to quickly say/hand-write my email to someone and continue the conversation from my main domain -- say, ß@oin.am.
I don't use the short oin.am as my primary (which is oinam.com), I have it as a alias domain, allowing me to quickly say/hand-write my email to someone and continue the conversation from my main domain -- say, ß@oin.am.