I am not sure where to put this because it is related to the forum in general. There seems to be an identity problem with the activation mail automatically generated when registering. In GMAIL the activation mail drops through to the spam box with the following message:
Be careful with this message. This message may not have been sent by: firstname.lastname@example.org. Similar messages were used to steal people's personal information.
I will leave the link that explains the warning: https://support.google.com/mail/troubleshooter/2411000?p=sent_warning&hl=en&rd=1
This is just an alert for email@example.com (whose identity is undetermined by the gmail server) and a PSA for any new registrees that are unsure what to do, or haven't figured out where to find the confirmation message with the activation link.