I can see from the email logs that @yahoo.com is delaying emails from Voice, but I can also see that they do get through in the end. I guess that yes they may end up in the spam folder but perhaps you can 'educate' it by marking it as not-spam so they don't get stuck in future!
Thanks
Joe
thank you for being able to confirm the delay on Yahoo's side
i did "educate" the email to not go to spam and then further to your reply i have made other change to add contact, which seems to be working at the moment
i tested with both logged in and logged out using the captcha and from two [2] different browsers and both went through straight away with a few second delay
there are two [2] things to note and a query of it's own, [not bug related] hence i will ask separately as this query is now resolved
many thanks