vv221: _I need to install the Steam client to send the confirmation e-mail?! No way!
0Grapher: I don't think I had to do that when I was still using Steam. Maybe you've done something wrong. (?)
Well, I didn’t stop here:
_Okay, I’ll contact Steam support about it…
_Wait, I need to create *another* account for sending e-mails to support?! … Okay, done.
_Second account created, e-mail sent, now let’s hope they will be efficient.
EDIT:
Here is the page from which I read I need to go through the client to send the verification e-mail:
https://support.steampowered.com/kb_article.php?ref=5151-RUAS-1543