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NTT Cloud Fax

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Spec score 8.0 #43 of 103 in Online Fax Services

What it is

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.

Spec sheet

What it does
NTT Cloud Fax handles inbound and outbound faxes and delivers them through email attachments for management and archiving.Read 15 Oct 2026 · services.global.ntt
Security
NTT recommends enabling TLS encryption on the SMTP connector between the customer email solution and Cloud Fax.Read 8 Oct 2026 · services.global.ntt
Support
NTT's Global Integrated Operations Centre provides English-language support 24 hours a day, 365 days a year for NTT-controlled service elements.Read 15 Oct 2026 · services.global.ntt
Availability
NTT says Cloud Fax platforms use on-site redundant high-availability clusters with stateful failover that can preserve calls in progress in many failover scenarios.Read 8 Oct 2026 · services.global.ntt
Billing
Monthly recurring line charges are billed monthly, overage faxes are charged per minute, and NTT says it does not prorate monthly charges.Read 8 Oct 2026 · services.global.ntt
Billing policy
Monthly charges are calculated at month end, NTT does not prorate monthly charges, and removed lines remain chargeable for the full current month.Read 15 Oct 2026 · services.global.ntt
BYON integration
Bring Your Own Numbers can register numbers from another carrier, with SIP trunking and T.38 compatibility required.Read 15 Oct 2026 · services.global.ntt
Chrome Web Store fax extension
The opened Chrome Web Store listing for Satellite Office Cloud Phone/Cloud Fax shows 0 out of 5 from 0 ratings; it is offered by Sateraito Office, not NTT DATA.Read 15 Oct 2026 · chromewebstore.google.com
Company activities (Crunchbase)
Crunchbase describes NTT DATA as providing consulting, systems integration and IT outsourcing and lists 32 acquisitions.Read 15 Oct 2026 · crunchbase.com
Company reach (LinkedIn)
LinkedIn says NTT DATA serves clients in more than 50 countries.Read 15 Oct 2026 · linkedin.com
Company size (LinkedIn)
LinkedIn lists NTT DATA as a public IT-services company with more than 10,001 employees and headquarters in Tokyo.Read 15 Oct 2026 · linkedin.com
Data protection
NTT states that personal data stored at rest for more than one hour is encrypted using AES-256.Read 8 Oct 2026 · services.global.ntt
Delivery notifications
Users receive email notifications indicating successful or failed fax delivery.Read 15 Oct 2026 · services.global.ntt
Destinations
The per-line service includes outgoing faxes to listed destinations including the United States, United Kingdom, Australia, Canada, and Japan; other destinations are charged per minute.Read 8 Oct 2026 · services.global.ntt
Device limitation
The service is not compatible with analogue fax devices and works using email software clients such as Outlook or Gmail.Read 8 Oct 2026 · services.global.ntt
Email compatibility
The customer email solution must use Microsoft Exchange or Gmail, with an SMTP connector configured to connect it to NTT Cloud Fax.Read 8 Oct 2026 · services.global.ntt
Email integrations
The customer email system must use Microsoft Exchange or Gmail technologies and connect through an SMTP connector.Read 15 Oct 2026 · services.global.ntt
Encryption at rest
Personal data stored for more than one hour is encrypted with AES-256.Read 15 Oct 2026 · services.global.ntt
Fax formats and status
Supported outgoing formats include DOC, PDF, XLS, PPT, and TXT, and users receive email notices of successful or failed delivery.Read 8 Oct 2026 · services.global.ntt
Fax protocols
Incoming fax handling automatically detects T.38 and T.30 protocols.Read 8 Oct 2026 · services.global.ntt
File formats
The service lists DOC, PDF, XLS, PPT and TXT as supported outgoing fax formats.Read 15 Oct 2026 · services.global.ntt
Founded year
NTT DATA Group's corporate profile gives an establishment date of May 23, 1988.Read 15 Oct 2026 · nttdata.com
High availability
NTT states that Cloud Fax platforms use redundant high-availability clusters with stateful failover that can preserve calls in progress in many scenarios.Read 15 Oct 2026 · services.global.ntt
HQ and ownership (Crunchbase)
Crunchbase places NTT DATA in Koto, Tokyo, Japan and identifies NTT, Inc. as its parent organization.Read 15 Oct 2026 · crunchbase.com
Inbound faxing
Incoming faxes arrive as PDF email attachments and the service detects T.38 and T.30 fax protocols automatically.Read 15 Oct 2026 · services.global.ntt
International destinations
The per-line plan includes outgoing fax destinations across listed countries in Europe, Asia-Pacific, Africa and the Americas; other destinations use per-minute billing.Read 15 Oct 2026 · services.global.ntt
International faxing
YesRead 21 Sep 2026 · services.global.ntt
Legal name (Crunchbase)
Crunchbase identifies the legal name as NTT DATA Corporation and says it is an active for-profit company acquired by NTT, Inc.Read 15 Oct 2026 · crunchbase.com
Limit: analogue devices
The service does not support analogue fax devices and works through email clients such as Outlook or Gmail.Read 15 Oct 2026 · services.global.ntt
Limit: fax duration
NTT may disconnect a fax call after two hours, requiring the sender to redial.Read 15 Oct 2026 · services.global.ntt
Limit: fax size
Maximum inbound and outbound fax size depends on attachment-size policies on the customer email servers.Read 15 Oct 2026 · services.global.ntt
Limit: high-volume use
Fax blasting, junk faxing, spam, broadcast fax and other high-volume or multi-person faxing are prohibited.Read 15 Oct 2026 · services.global.ntt
Limit: inbound recipients
Only one email address can be configured for inbound fax delivery unless a distribution list is used.Read 15 Oct 2026 · services.global.ntt
Limit: mailbox types
Distribution lists cannot send outgoing faxes and shared mailboxes are not permitted; personal mailboxes are required.Read 15 Oct 2026 · services.global.ntt
Limit: notification customization
Email notification appearance cannot be customized or disabled at the client level.Read 15 Oct 2026 · services.global.ntt
Limit: number format
Outgoing fax numbers must use international E.164 format; omitting a country code can route a fax incorrectly.Read 15 Oct 2026 · services.global.ntt
Limit: senders per line
Each line has up to five personal outgoing-fax email addresses by default; extra users cost more.Read 15 Oct 2026 · services.global.ntt
Number ordering
NTT can provide new local numbers subject to feasibility and numbering-resource availability.Read 15 Oct 2026 · services.global.ntt
Number porting
Existing numbers may be ported where supported, but porting depends on country rules, carrier feasibility and documentation.Read 15 Oct 2026 · services.global.ntt
Outbound faxing
Users can send faxes from an email attachment, the email body, or both.Read 15 Oct 2026 · services.global.ntt
Patch management
Critical and security patches are targeted for implementation within 30 days of vendor release.Read 15 Oct 2026 · services.global.ntt
Penetration testing
NTT states that annual penetration tests assess its external cloud footprint using industry-standard methodology.Read 15 Oct 2026 · services.global.ntt
Rating on G2
G2's online fax category reports 4.31 out of 5 from all submitted category ratings across 91 products; NTT Cloud Fax is not among the highlighted products on that page.Read 15 Oct 2026 · g2.com
Security certifications
NTT says its third-party datacenters provide certifications including SSAE16 and ISO 27001.Read 15 Oct 2026 · services.global.ntt
Sending and receiving
Users can send faxes as an email attachment, in the email body, or both, and receive incoming faxes as PDF email attachments.Read 8 Oct 2026 · services.global.ntt
Service
NTT handles customers’ inbound and outbound faxes, delivering them through email attachments for management and archiving.Read 8 Oct 2026 · services.global.ntt
TLS recommendation
NTT recommends enabling TLS encryption on the SMTP connector between the customer email system and Cloud Fax.Read 15 Oct 2026 · services.global.ntt
Usage limits
Each line supports up to five outgoing fax email addresses by default, and the service prohibits fax blasting, junk faxing, spam, broadcast fax, and other high-volume or multi-person faxing.Read 8 Oct 2026 · services.global.ntt
Users included
5Read 21 Sep 2026 · services.global.ntt
Virtual fax number
YesRead 21 Sep 2026 · services.global.ntt

Plans and prices

Cloud Fax Service - Per Line Price not published monthly recurring charge; price defined in service order up to 5 fax senders per line · unlimited recipients · phone number ordered separately Read 15 Oct 2026 · services.global.ntt
Cloud Fax Service - Additional User Price not published monthly recurring charge; price defined in service order adds one permitted outgoing-fax user · requires at least one per-line service Read 15 Oct 2026 · services.global.ntt
Outbound faxes - Pay-as-you-go Priced on request Per minute for destinations outside the included plan coverage Worldwide PSTN fax destinations · charged according to NTT's Pay-as-you-go rate card Read 8 Oct 2026 · services.global.ntt
Pay-as-you-go outbound fax Priced on request per-minute consumption charge using NTT rate card for destinations outside included plan coverage · billed in one-second increments Read 15 Oct 2026 · services.global.ntt

Every NTT Cloud Fax plan and price →

Strong points and limits

Strong points

  • Virtual number with inbound and outbound faxing
  • Email delivery and PDF receipt attachments
  • Supports listed international destinations
  • 24/7 English-language operational support
  • Five senders per line

Limits

  • Requires Exchange or Gmail SMTP configuration
  • Not compatible with analogue fax devices
  • Other destinations incur per-minute charges
  • High-volume and broadcast faxing is prohibited

Who it suits

It suits organizations that want to send and receive faxes through Exchange or Gmail instead of analogue fax hardware, including international destinations.

Verdict

NTT Cloud Fax translates fax traffic into email workflows with defined sender, destination, and protocol rules. Confirm connector requirements, included destinations, and pay-as-you-go rates before choosing lines.

Where Specifiction places it

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