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Home > Guides > Wiping a fax machine
A fax machine stores more than you think: saved incoming faxes, outgoing redial history, speed-dial numbers, your station ID name and number, and Wi-Fi credentials on networked models. Before selling, run the machine's factory reset or initialize-memory function, then print a settings report to confirm the stored numbers and names are gone.
| What lives in fax memory | Why it matters to a seller |
|---|---|
| Stored faxes waiting to print | Incoming faxes held because the machine was out of paper may sit unread in memory |
| Redial and call history | Shows every number you faxed recently, including clients or medical offices |
| Speed dial and group dial entries | A list of your regular fax contacts with names |
| Station ID (your name and fax number) | Prints on every page you send; it identifies you to the buyer |
| Wi-Fi network name and password | On networked models, the machine joins your network |
| Scanned-but-unsent documents | Failed transmissions can leave scanned pages in a queue |
Usually not. Modern fax machines and multifunction printers keep settings and stored faxes in non-volatile memory, which survives a power outage on purpose. That is the same memory that preserves your station ID and saved faxes when the power flickers, so a day unplugged in the garage wipes nothing. Older machines sometimes used a small backup battery that kept memory alive for a few hours or days; when that battery dies, the memory does eventually fade, but you cannot rely on that, and waiting is not a plan.
Use the reset the manufacturer built for this. The menu names vary, but look under Settings, Initial Setup, or General for options like "Factory Reset," "Restore Default Settings," "Initialize Memory," or "Erase Stored Faxes." The exact steps differ by brand:
Run the full reset, not just the fax-log clear, because the fax-log clear only empties the transmission history. Your station ID, speed dials, and Wi-Fi credentials survive a partial clear.
After the reset, print the machine's own reports and look at them with a skeptical eye. Most machines can print a "User Data List," "Telephone Number List," or "Speed Dial List" report, plus a "TX/RX Activity Report" for recent history. If any names, numbers, or your old station ID still appear, the reset did not cover everything, and you should repeat it or clear those entries by hand.
Two more checks people forget:
They will not see old fax contents after a proper reset, but there is one subtle leak: the station ID. Until you clear it, your name and fax number keep printing at the top of every page the machine sends. That is how the buyer ends up with your identity stamped on their first outbound fax. The factory reset clears the station ID along with everything else, which is another reason to choose the full reset over deleting saved faxes one by one.
Once the reports print clean and the Wi-Fi is forgotten, the machine is safe to sell or donate. If you want to avoid owning a fax machine again entirely, you can send the occasional fax online instead: with LetterAgent you describe the fax to your AI assistant, approve the exact quoted price, and it is sent, with no machine, no memory, and nothing to wipe later.
Ready to fax it? Fax with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it is sent.
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