# E-Fax How To Guide ## Sending a Fax Faxes sent out must be sent from the specific authorized email address which is designated on account setup. If you aren't sure which email address is the authorized address please contact [Accent Support](https://www.accentvoice.com/tech-support) for verification. Faxes are sent outbound via email by sending to the destination 10-digit phone number @faxtrunk.us. {% hint style="info" %} For example, to send a fax via email to (740) 555-1234 the destination address in the email would be **<7405551234@faxtrunk.us>**. {% endhint %} Attach the document you wish to send to the email prior to sending. Accepted file formats are .PDF, .DOC, .DOCX, .TXT, and .RTF. ## Receiving a Fax Faxes can be sent from any traditional fax machine to your designated fax phone number and are received to the authorized account email address with a .PDF file attached to the email. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://guides.accentvoice.com/e-fax-guide/master.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.