I tried free fax tools myself, and at first, I didn’t see any problems. But after reading Why Modern Businesses Need More Than Just Email for File Sharing and reflecting on my experience, I realized free services are fine for non-critical documents but can fail with sensitive files. Delivery confirmations might be unreliable, and some platforms store your info. Personally, I’d use free fax for simple stuff, but for contracts, banking, or personal data, I always go with paid or secure services — peace of mind is worth it.