No Confirmation Email deliever

[DesmoWolf]

Since the latest Update (v4.7.18) last week the System do not sent the confirmation Mails to the Members.

[Marc]

Do you have any example members names you can provide me? 

[teraßyte]

Did you customize the email templates at some point perhaps? The last update changes the templates to include a new security key, and if the parameters of the template don't match, it's most likely causing an error preventing the email from being sent.