How secure is Public URL created by IFTTT for a file I send to trigger@applet.ifttt.com? [on hold]

I am keen on implementing a file upload functionality using IFTTT “Email” trigger (https://ifttt.com/email). The description states:

Send IFTTT any email Send IFTTT any email at trigger@applet.ifttt.com
and this Trigge… Continue reading How secure is Public URL created by IFTTT for a file I send to trigger@applet.ifttt.com? [on hold]