nothing is received
b. Please make sure you have enough permission for FTP uploading (You can try this by clicking ‘Upload a test file’ button).
c. Make sure the user name and / or password of SMTP server is correct, if your SMTP server requires authentication (You can try this by click ‘Send a test Email’ button).
d. Please check log, if FTP upload or Email sending is failed, it will be logged, and this may give you some clue on how to solve the problem.
e. Change the threshold to a more sensitive setting.