Guides · By Povilas Konopackas, founder · Updated May 2026
How-to guides for sending a fax online.
Practical step-by-step guides for the specific documents and recipients people most commonly fax. Each guide covers which forms accept fax, where to find the right number, how to prepare the document, and what to do when the line is busy or the transmission fails. No affiliate nonsense, no free-trial traps.
By document type
- How to fax a signed contract. Is a faxed signature legally binding under E-SIGN and UETA? The five-step workflow, and why to keep the wet-ink original.
- How to fax medical records. Sending records to a doctor, specialist, or insurance company, with privacy considerations and HIPAA notes.
By recipient
- How to fax to the IRS. Which forms accept fax (2848, 8821, 4506-T), how to find the right state-specific number, what to do on a busy line.
By device
- How to send a fax from iPhone. No app required. Use Notes Scan Documents and a browser.
- How to fax without a fax machine. Four real options: phone, desktop, office-supply counter, library, with current prices.
Looking to compare services?
The comparison guides look at Shotfax against eFax, FaxZero, HelloFax (Dropbox Fax), and the question of the cheapest way to send a single fax.