When I try to send an e-mail through my website running Laravel 4, I get this exception:
{\"error\":{\"type\":\"Swift_TransportException\",\"message\":\"Expe
I tried the same thing and got the same error. So i personally checked my gmail account and i had a message from Gmail itself letting me know that they'd blocked an access attempt to my email account.
They showed an option to disable this security setting by visiting https://www.google.com/settings/security/lesssecureapps.
Things will actually be more straight forward if you visit that link already logged in into your Gmail account.