Through an internet fax service: If you sign up for an internet fax service, you won't need to worry about connecting a phone line to your computer. You just have to make sure it's connected to the internet. There could be some variations with regards to how you can send fax depending on the provider, but they generally allow you to use email-to-fax. Simply open your email client, attach the documents you want to send, enter the recipient's fax number followed by "@[onlinefaxprovider.com]" (in the case of RingCentral Fax, this would be [recipient fax number]@rcfax.com) and click send. With RingCentral, you can also use your mobile phone to send faxes—you just need to sign up for a plan that includes the faxing feature, download the RingCentral app, and send and receive faxes from there.