Fax Zero is world’s best free fax sending service, its delivery is reliable and you get email confirmation when your fax is delivered, you have to just upload your documents with their interface and enter sender and receiver details. Sender’s details include name and email of the sender and receiver’s information includes name and Fax No.
With Free Plan you can send maximum 3 pages + cover, you are limited to send 5 free faxes in a day, the only catch is that they will have their ads on the cover page, if you want your fax does not contain any ad then you can use paid plan which is only for $1.99, they allow 15 pages and optional cover; payment is made through PayPal and they ensure priority delivery of your faxes over free plan.
You can even send international faxes with ease, they have international rate card and all payments are made through PayPal. Fax Zero is Cheap over many paid services for international faxes, you get USA Canada Faxes FREE and best is you can send these faxes while sitting at home anywhere in the world
The file formats for sending faxes are doc, docx, and PDF