To fax a document online, sign in to Fax.Plus, enter the recipient’s fax number, attach your file, and send. Check that every page is complete and readable before uploading, then save the transmission confirmation. You can use an existing digital file or a clear scan of paper.
Check the document you intend to send. A successful fax transmission cannot fix an unreadable page, missing entry, or incorrect destination.
Create a Fax.Plus account and have the document and recipient’s fax number ready. Use the web or mobile app to follow these three steps.
Open Send Fax in your Fax.Plus account. Enter the recipient’s full fax number, including the country and area codes, and check it against their instructions.
Attach up to 10 supported files and arrange them in the order you want them sent. Add a cover sheet if needed. File-size and total-page limits apply.
Review the number and documents, then select Send. Check the final transmission status in your account or email notification, and save the confirmation report for your records.
Use the option that matches where your document is now. These are starting points for the sending steps above; setup depends on the method you choose.
If your document is saved on your computer, attach the final version in Send Fax. You do not need to print a supported digital file first.
Use the Fax.Plus mobile app to attach a saved file. Review the document before sending, especially if it came from a photograph or scan.
Email-to-Fax is an option on paid plans with the feature enabled and a registered sender address. Check the email-content setting so that your message and signature are included only when intended.
The Fax.Plus Google Drive integration can send a supported file stored in Drive. It requires installation and authorization with your Fax.Plus account.
Use the Fax.Plus mobile app’s camera to make a digital copy of paper. Check that every page is upright, complete and readable before attaching it.
If you already have a working fax machine and compatible telephone line, you can send the printed pages. Follow the machine’s loading instructions and check its transmission result.
Fax.Plus accepts PDF, DOC, DOCX, TXT, RTF, JPG, PNG, TIFF, XLS and XLSX files. Use the relevant guide when your document needs a format-specific workflow.

Fax acceptance depends on the recipient and purpose. Check the requested documents, destination and any signatures or reference details before sending.
Medical records and lab results: Check that you have authorization to share them and send only the pages the receiving office requests.
Insurance and dental claims: Include the claim details and supporting documents the insurer requests, and verify the correct department.
Referrals and prior authorization requests: Check the patient, provider and reference details the receiving office needs, using your organization’s approved process.
Contracts and agreements: Send the signed version with all required pages and attachments. Check that the recipient accepts the document by fax.
Invoices and billing records: Include the invoice or account reference so the recipient can identify the document and route it correctly.
Other business records: Prepare the reports, statements or purchase orders requested by the recipient. Include the reference details needed to match the documents to your request.
Tax authorizations: Examples include Form 2848 (Power of Attorney and Declaration of Representative) and Form 8821 (Tax Information Authorization). Check signatures and required entries.
Business tax forms: Examples include Form SS-4 (Application for Employer Identification Number) and Form 2553 (Election by a Small Business Corporation). Check required attachments.
Notices and supporting records: Send the pages requested by the tax office or adviser. For every tax document, follow current official instructions and verify that fax is accepted for your situation.
In the U.S., these are options to check when you want to fax documents in person. Confirm local availability, opening hours and the total cost before travelling, and bring the recipient’s full fax number.
No. Attach a supported digital file directly in the Fax.Plus web or mobile app. If you only have paper, make a clear scan first. You do not need to print a digital document just to send it to a fax number.
Yes. A new Free account includes up to 10 one-time sending pages after signup and mobile-number verification. Extra sending credit is available without a recurring subscription, with a $10 minimum top-up and no expiry. Destination and transmission duration affect usage, and connected failed attempts can use credit. Receiving faxes, Email-to-Fax and sending to certain high-rate destinations require a paid plan.
Check the destination number and use your organization’s approved sharing process for work documents. Fax.Plus encrypts stored files at rest using 256-bit AES, with unique encryption keys for each user. A transmission confirmation does not replace the recipient’s own acceptance requirements.
Transmission time depends on the number of pages, document complexity, connection quality and the receiving fax machine. Scans and detailed images can take longer than simple text. Wait for the final status before treating the fax as successfully transmitted.
Check the final status in your Sent folder and save the confirmation report. Success means the receiving fax machine acknowledged the transmission. It does not confirm that a person read or accepted your documents. Contact the recipient if you need that additional confirmation.
Find a guide for your document, choose a device, or connect faxing to the tools you already use.
Create a Fax.Plus account, attach your prepared document, and send it to the recipient’s fax number. Check the final status and keep the confirmation.