Summary
Zoom Phone allows users to send and receive electronic faxes (eFax) directly through the Zoom desktop and mobile apps, or via an authorized email address. This eliminates the need for physical fax machines and analog phone lines while keeping transmissions fully encrypted.
Body
Overview
Zoom Phone allows users to send and receive electronic faxes (eFax) directly through the Zoom desktop and mobile apps. This eliminates the need for physical fax machines and analog phone lines while keeping transmissions secure and fully encrypted.
Applies to: Faculty Staff
Before You Begin (Prerequisites)
Step-by-Step Guide
Instructions
1 Access Online Fax in Zoom Phone
Open the Zoom desktop application to access your eFax inbox and controls.
●Sign in to the Zoom desktop app on your computer.
●Click the Phone tab in the main navigation.
●Select the Fax tab to open your default Inbox.
2 Compose and Send an Outgoing Fax
Create a new fax message, specify recipients, attach documents, and transmit your files.
●In the top-right corner of the left navigation menu, click the New Fax button.
●To: Enter a contact, email address, or destination fax number and press Enter (supports up to 50 recipients).
●From: Select your sending fax number from the dropdown list.
●Cover page: Configure a cover sheet or choose None if one is not needed (view cover page options).
●Attachments: Click to upload or drag files (acceptable formats: PDF, JPG, JPEG, TXT, PNG, DOC, DOCX; max 50 MB / 300 pages). Drag the vertical dots 
to reorder, or click 
to remove an attachment.
●Click Send to transmit your fax.
3 View and Manage Received Faxes
Review incoming faxes, preview attachments, add notes, and perform quick actions from your inbox.
●View Details: Your inbox displays the sender (From), destination (To), received date and time, and PDF details. Hover over an attachment to preview it, or click to open full PDF tools.
●Add Notes: Select Add or view notes to attach follow-up commentary to individual or shared faxes.
●Download / Open: Hover over a fax and click the download icon 
, then click the folder icon 
to view the saved PDF file.
●Quick Actions: Click the ellipsis icon 
to call the contact 
, send an SMS 
, mark as read/unread 
, copy number 
, or delete 
.
4 Verify Destination Fax Line & Troubleshoot Delivery
If a fax fails to send or encounters delivery errors, verify the recipient line by placing a voice test call.
●Call the recipient fax number directly from a telephone or Zoom Phone.
●Valid Fax Line: You should hear high-pitched fax tones (beeping or screeching sounds).
●Invalid / Misconfigured Line: If you hear a normal voice dial tone, fast busy signal, or automated error message, the destination number may be incorrect or not set up to receive faxes.
Important Note on “Invalid Recipient Number”
If Zoom returns an “invalid recipient number” error, the failure occurs before dialing out. Verifying the destination line with a phone call confirms whether the digits were formatted or keyed in correctly.
Support & Assistance
Get Help
Need additional assistance using Zoom Phone or online faxing?