I cannot receive verification emails from Amazon(both of amazon.com shop site and AWS cloud) at least for this one year.
Because these mails are sent from web forms, I cannot get NDR's.
And my spam box are empty.
Auto labels? -No, Auto Tags? -No, moved to anywhere by my filter settings? -No.
And this happedned in accounts of Zoho Mail default domain and accounrs of hosted custom domain.
So, does Zoho Mail silently drop verification emails?
I 've experienced also with verification emails from sogo-seibu.jp .
(as a work around, I've received these emails at gmail)
Best wishes,