You can send me an e-mail at: firstname.lastname@example.org
Please, check your spam folder!
Sometimes big e-mail providers put e-mail from smaller domains in spam folder, Microsoft is especially notorious for this practice.
Of course, you can always whitelist my domain to be sure that my e-mails won’t end up in your spam folder.
I also have a public PGP key if you wish to use it for asymmetric encryption.