I could not receive email from TD Ameritrade when using iCloud email address
I have an issue to receive the verification / confirmation code from TD Ameritrade when using iCloud email address. Other email domains e.g., outlook or gmail do not have such an issue. I checked with TD Ameritrade team and they responded "There were no notice of issues with icloud receiving emails from us from the developers at this time."
I am guessing the iCloud filtering mechanism is strong