If you're writing to a company or organization, put the name of the company or organization after the "To." If the fax has to go to a specific individual within the business or organization, use "Attn:" followed by the person's name on the following line. For example, if you want to send a fax to the attention of John Smith at ABC Company, do so with the text "Attn: John Smith" on the document. Alternatively, if you have their phone number, you could also use that as well, for example "Fax: (555) 555-5555" You can also use subject lines when sending faxes. They are used in place of opening words such as "RE:," "Fwd:," or "Opinion req:." You can see some examples of good and bad use of subject lines below: Good Use of Subject Lines: 1 Legal Disclaimer - Fax 2 Re: New Product Request - Fax 3 Need Opinions on X, Y, Z - Fax 4 Questions About Billing - Fax 5 Update on Project - Fax