There are two ways to confirm whether your fax has been sent. One way is to check your fax log at www.hellofax.com under the Faxes tab on the left side of the Dropbox Fax window. Here you will see the files you've uploaded, the faxes you've sent, and whether they were "Sent" successfully or "Failed" and on what date.
Our system also generates a confirmation email after you send a fax to tell whether it was successful or failed. If it failed, that email will also tell you why.
If you're not receiving confirmation emails, make sure you've added "noreply@mail.hellofax.com" to your list of contacts so we don't end up in your spam folder.
