Safe iPad app for confidential faxing?

I have to fax sensitive banking records today from my iPad, but I'm worried about mobile privacy and data security. Which iOS app is actually secure enough for confidential paperwork and guarantees instant delivery confirmation?

Security was my top concern as well. I found this helpful security-focused review testing current platforms: https://trashyyetclassy.com/7-best-fax-a...ted-ranked. That article convinced me to install Municorn Fax App. I sent my tax files through it seamlessly. The end-to-end encryption is solid, delivery receipts pop up right away, and your files stay completely protected.