It's a reasonable question — email and secure messaging cover most communication now. But fax hasn't disappeared, and it isn't disappearing. It has settled into a specific set of use cases where it keeps being the default, or the required, method.
Many public authorities, courts, and government offices — in Germany and elsewhere — still accept fax as a standard submission channel, and in some procedures it remains the specified fallback when an online portal is unavailable or not yet built for a particular form.
Healthcare is the clearest global example: referral letters, prescriptions, and records frequently move between practices and insurers by fax, because it produces a paper-equivalent, time-stamped transmission record without needing both parties to run the same software.
Legal practice keeps fax for a similar reason — a fax transmission confirmation is a simple, well-understood record that a document was sent and received, which matters for deadlines and filings.
Fax doesn't require the recipient to have any particular software, account, or app — a fax number and a fax-capable line (or an online fax service) is enough on both ends. That interoperability is exactly what a lot of newer messaging technology still doesn't guarantee across organizations, countries, and legacy office equipment.
It also produces a transmission confirmation as a natural side effect — proof that a specific document reached a specific number at a specific time — which is a genuinely useful property for anything with a legal deadline attached.
Most people who still need to send a fax today don't have a fax machine, a phone line for one, or any interest in getting either for a single document. That's the specific problem an online fax service like pdftofax.com solves: upload a PDF, send it to a real fax number, and get proof it arrived — without owning any fax hardware at all.
Upload a PDF, JPG, or PNG, enter the destination fax number, and pay only once it is delivered.
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