Some days I did not receive more e-mails from my Foscam ipwebcam...
NOTE: if you have enable the security in two steps, you have to disable it.
Very strange because is has always worked.
I have checked the "Mail Service Settings" in the webcam and all it is correct:
after I remembered that Google has prepared the account security system then I have setting the following:
Go to https://www.google.com/settings/security and login your gmail account;
Click on “Settings” behind“Access for less secure apps”, then choose “Enable”. (see point 4)
Now my test is correct:
NOTE: if you have enable the security in two steps, you have to disable it.