email starting with number considered invalid

I updated to the latest version of the plugin and sent out a newsletter to about 430 people. I checked a couple days later and there still 320 e-mails in the queue and there was an error message on the queue page about one of the e-mails being invalid. It was gmail address that started with the number “1”. (1wor…[email protected]). It is a valid e-mail address. I removed that subscriber and one other that started with a number (for which there had been no error) and clicked “Run now” to get the mail sending again.

One other bit of unrelated feedback, when I was sending the message I had forgotten to select the mailing list and I got a generic error about being unable to queue the message. It took me a while to track down the problem because the error message made it seem like there was a system error rather than a form validation/missing required field error.