Thank you for your reply and tried your recommendation, but it does not work.  Why all of a sudden the feature is not working.

Anyway can you get in touch with the programmers - Why?  see below

1st - have been using yahoo mail to send invoices for the past 10 years with not problem - never had to turn on "two step" verification as the article mentions.

2nd - had used "emailing" invoices the day before this problem.

3rd - called Tech support the other day and the rep said it has been reported as an "issue"

4th - how do the users know if it is an "issue" or not????

5th - as a Beta tester never had this issue before - do not want to call tech support because they will have limited information