noun
fax
A1
Fax: a neuter noun meaning 'fax' (the transmitted document) or 'fax machine'. Article: das, plural Faxe. Genitive often des Fax(e)s (‑e optional). Declines regularly. No special prepositions or irregularities; used like other neuter German nouns when referring to sending or receiving faxes.
Examples
Bitte schicken Sie das Dokument per Fax.
Please send the document by fax.
Ich habe ein Fax bekommen.
I received a fax.
Der Anwalt sandte ein Fax an die Firma, nachdem er die Unterlagen unterschrieben hatte.
The lawyer sent a fax to the company after he had signed the documents.
Details
Mnemonics
Picture an old fax machine spitting out paper labeled 'FAX'.
Same as English 'fax' — easy to remember
das Fax — imagine a neutral grey machine
Notes
Plural often 'Faxe' or 'Faxgeräte' in formal contexts.