11 aug 2026

How to Fax Online: Top 3 Methods (Without a Machine)

While faxing may seem outdated, it remains a standard way to exchange documents in industries like healthcare, legal services, insurance, and real estate. In healthcare alone, industry surveys suggest that around 70% of communications are sent by fax, rising to about 90% when EHR-integrated faxing is included.

Fortunately, you no longer need a fax machine or dedicated phone line to send a fax. In this guide, you’ll learn how to fax without a fax machine using three simple methods, including sending a fax from your phone with iScanner.

Method 1: Send a Fax With the iScanner App

If you’re looking for the easiest way to send a fax from your phone, a mobile scanning app with built-in faxing is the answer.

With iScanner, you can scan paper documents, improve image quality, save them as PDFs, and fax them without switching between multiple apps or searching for a local fax service.

Why use iScanner?

Whether you’re sending a signed lease, submitting insurance paperwork, faxing medical forms, or sharing a contract with a client, iScanner keeps the entire process on your phone. You can:

  • Scan paper documents in high quality
  • Save files as PDFs
  • Add a digital signature before sending
  • Fax documents without leaving the app
  • Keep important paperwork organized 

Instead of juggling separate apps for scanning, editing, signing, and faxing, you can complete the whole workflow in just a few minutes.

How to send a fax with iScanner

  1. Open the iScanner app.
  2. Tap Scan and capture your document using your smartphone camera.
  3. Review the scan and make any edits if needed.
  4. Save the document as a PDF.
  5. Select Fax.
  6. Enter the recipient’s fax number.
  7. Add a cover sheet if required.
  8. Do a final review and send your fax.
send fax without a machine

Method 2: Email to Fax

If the document is already saved on your computer, an email-to-fax service lets you send it straight from your inbox. You send an email as you normally would, but instead of entering an email address, you use the recipient’s fax number in the format provided by your fax service.

Why use email-to-fax?

Email-to-fax works well when your documents are already digital. For example, if you’ve received a signed contract, an invoice, or a completed form by email, you can forward it as a fax without printing or scanning it first.

Other advantages include:

  • Familiar email interface
  • Supports common file formats, including PDF
  • Easy to use from your computer or mobile device

How to send a fax by email

  1. Open your email account.
  2. Create a new message.
  3. Enter the recipient’s fax number in the address field.
  4. Attach the document you want to fax, such as a PDF.
  5. Add a cover sheet if requested.
  6. Send the email.

The fax service receives your attachment, converts it into a fax, and delivers it to the recipient.

What to keep in mind

Most email-to-fax services require a subscription, although many offer a free trial if you only need to send a few documents.

If the document starts out on paper, you’ll need to scan it before attaching it to your email. In that case, using a scanning app with built-in faxing can save you a few extra steps by keeping everything in one place.

An email-to-fax service example

Dropbox Fax is one option if you only need to send a fax occasionally. Paid subscribers can send documents directly from their email, while pay-as-you-go faxing starts at $0.99 for up to 10 pages after the free pages are used. You can also connect Dropbox Fax to Google Drive, making it easier to send files you already have stored there.

Method 3: Send a Fax Through a Web-Based Fax Portal

If you’re working on a computer,  web-based fax portals are often the most convenient option, as they let you upload and fax documents directly from your browser..

How to send a fax through a web portal

  1. Sign in to your online fax provider.
  2. Open the Send Fax section.
  3. Enter the recipient’s fax number.
  4. Upload your document, such as a PDF or Word file.
  5. Add a cover sheet if needed.
  6. Review the details and click Send.

The service converts your file into a fax and delivers it electronically to the recipient.

Why use a web-based fax portal?

This method is a good fit when you’re already working from a desktop or laptop and your documents are saved locally. You can upload files directly without transferring them to your phone first.

Other benefits include:

  • Send PDFs, Word documents, and other common file types
  • Access your fax history from your account
  • Manage multiple documents from a single dashboard

Popular web-based fax services

Several providers offer browser-based faxing. Fax.Plus and mFax are popular choices if you send faxes regularly. If you only need to send a document occasionally, FaxZero lets you fax a limited number of pages for free, making it a convenient option for occasional use.

Which method should you choose?

The best option depends on where your documents are and how you prefer to work.

Choose iScanner if you:

  • Need to send a fax from your phone
  • Often start with paper documents
  • Want to scan, edit, sign, and fax in one app

Choose email-to-fax if you:

  • Already have your documents in your inbox
  • Mostly send digital files
  • Prefer working from your email client

Choose a web-based fax portal if you:

  • Are working from a desktop or laptop
  • Have documents saved on your computer
  • Want to upload and fax PDFs or Word files through your browser

Each method lets you fax without a fax machine, so the right choice comes down to your workflow.

FAQs

How can I send a fax online without a fax machine?

You can use a mobile fax app, an email-to-fax provider, or a web-based fax service. All three methods allow you to fax without a fax machine or dedicated phone line.

How do I send a fax from my phone?

Apps like iScanner allow you to scan documents using your smartphone, convert them into a PDF, and send them directly to a recipient’s fax number.

Do I need a landline to fax online?

No. Online fax services use an internet connection instead of a traditional phone line.

Can I fax a PDF file?

Yes. Most digital fax services support PDF files, making them one of the most common formats for online faxing.

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