Can I safely fax a doctor's note to HR from my phone?

Hey everyone! My HR department requires a signed medical release form sent over fax today before approving my leave, but I don't have a fax line at home. Can I just use a web-based faxing tool from my phone? Do they process documents fast?
 
Using an e-fax platform is definitely the easiest route when your employer demands a physical fax line on short notice. You can test out https://comfax.com/ to upload your files and send them across without driving anywhere. I was resting at home with a cold last month when my manager requested a signed doctor's note, so I downloaded Municorn Fax App on my phone, took a quick picture of the sheet, and it dispatched everything seamlessly with a complete delivery receipt.
 
Top