NTT Cloud Fax vs OTG Networks vFax

NTT Cloud Fax is a paid web service that gives organizations a virtual fax number and handles inbound and outbound faxes through email. Users can send documents as email attachments, in the message body, or both, and receive incoming faxes as PDF attachments. Supported outgoing files include DOC, PDF, XLS, PPT, and TXT, with notices for successful or failed delivery. The service works with Microsoft Exchange or Gmail through an SMTP connector and does not support analogue fax devices. Incoming handling detects T.38 and T.30 protocols. Each line includes five outgoing fax email addresses by default; fax blasting, junk faxing, spam, broadcast fax, and other high-volume sending are prohibited. Listed destinations include the United States, United Kingdom, Australia, Canada, and Japan, while other destinations are charged per minute. NTT describes AES-256 encryption for personal data stored at rest longer than one hour and redundant high-availability clusters with stateful failover. Support is available in English 24/7 for elements under NTT control. Pricing is on request, with monthly line charges and per-minute overage billing.

OTG Networks vFax lets users send and receive faxes through email, a browser, or a device without fax hardware. To fax from email, users attach a PDF and enter the fax number in the recipient field; incoming faxes arrive as PDF attachments in the inbox. The web portal supports drag-and-drop documents, fax history, and management of multiple fax numbers. Customers can obtain a dedicated local or toll-free number or port an existing number. Delivery receipts report a timestamp, pages delivered, and recipient confirmation. The service is listed for Android, iOS, macOS, web, and Windows. OTG describes vFax as HIPAA compliant and says it uses encryption in transit and at rest, role-based access controls, and audit logs; it also lists 256-bit encryption and SOC 2 readiness. The page advertises unlimited cloud storage. The vFax plan is included free on every GoOTG plan, while the general pricing note starts at $15/user/mo. OTG identifies healthcare, legal, finance and banking, and real estate as industries that rely on vFax.