how to install efax
How to install eFax Messenger. 1  If you haven't already, sign up for an eFax account. 2  Choose the version of eFax Messenger that is appropriate for your operating system. 3  Click the download link. 4  Save the file to your computer. 5  Double click the file and follow the on-screen instructions to install eFax Messenger. Choose the version of eFax Messenger that is appropriate for your operating system. 2  Click the download link. 3  Save the file to your computer. 4  Double click the file and follow the on-screen instructions to install eFax Messenger.