.jpg)
We tested Dropbox Fax (formerly HelloFax): real pricing, fax quality, HIPAA gaps, and cancellation terms. Scored across seven categories.
If you send a handful of faxes a month from a desk, Dropbox Fax is one of the cheapest ways to do it. The free plan includes 5 pages with no credit card, pay-as-you-go sending costs $0.99 per fax for up to 10 pages, and the $9.99 Home Office plan includes 300 monthly pages, which works out to roughly 3.3 cents per page. The web flow is simple, and built-in editing and signing tools cover the common "sign this form and fax it back" workflow without a printer.
The picture changes the moment your needs grow past occasional sending. There is no iOS or Android app at all, so mobile faxing means a browser tab or email-to-fax. No Dropbox Fax plan lists HIPAA compliance or a Business Associate Agreement, which rules it out for healthcare workflows as sold. And when something goes wrong, the only way to reach the company is a web form: no phone, no chat, on any plan.
Dropbox Fax is owned by Dropbox, Inc. (NASDAQ: DBX). The product started life in 2011 as HelloFax, a Y Combinator startup, and came to Dropbox through the February 2019 acquisition of its parent company HelloSign for $230 million in cash. HelloSign became Dropbox Sign in 2022, and HelloFax was rebranded to Dropbox Fax in 2024.
The rebrand is still visibly incomplete. The application lives at app.hellofax.com, cover pages carry HelloFax branding, and email-to-fax still routes through @hellofax.com addresses. If you see both names used interchangeably, that is why: HelloFax and Dropbox Fax are the same product.
The product surface is narrow by design. There is a web app, email-to-fax on paid plans, integrations with Dropbox, Google Drive, Box, OneDrive, and Microsoft Word, and a sales-gated fax API inside the Dropbox Sign developer platform. Fax numbers are available in the US, UK, and Canada, and there are no mobile or desktop apps.
We reviewed Dropbox Fax using four evidence layers:
We then scored Dropbox Fax across seven areas: fax quality, pricing, security and compliance, usability, customer service and account control, data residency and retention, and enterprise, API, and healthcare automation.
Dropbox Fax delivers better baseline fax quality than either eFax or iFax in our previous tests. The background is white, text and table values arrive clean, and the output is usable at the default tier. One recurring artifact holds it back from a higher score.
We tested two document types in both sending directions (Fax.Plus to Dropbox Fax and Dropbox Fax to Fax.Plus), and ran multiple passes to confirm the artifact pattern. For each document, the slider moves across Dropbox Fax Standard and the Fax.Plus Normal and HD reference baselines. We also tried the optional "Send high-resolution color version of fax" checkbox, but it delivers a download link to the original file rather than a higher-quality fax.
The first test used a simulated IRS Form 2553, a US government tax election form. Documents like this are common in legal, financial, and real estate workflows: signed agreements, tax filings, and multi-party authorization forms where every detail needs to arrive intact.
Cosa conteneva il documento di prova:
A horizontal streak cuts across the item C address line (Number, street, and room or suite no.), degrading that field label and running into the right margin. Everything else holds: the RECEIVED and EXPEDITE stamps are sharp, all four shareholder signatures in the consent table are legible, the entered address reads cleanly just below the struck label, and the microprint line at the bottom is traceable. One streak on an otherwise clean page.
Clean white background, sharp tables, legible handwriting, no streak. The eagle seal watermark is faint. This is the reference baseline for standard-quality faxing.
A genuine higher-resolution fax: the eagle seal watermark is fully visible across Part I, stamps keep their edge detail, handwriting is crisp, and the shareholder table is sharp. This is the high-resolution fax tier Dropbox Fax has no equivalent for.
Fax.Plus Normal completed in approximately 1 minute. Fax.Plus HD completed in approximately 3 minutes. Dropbox Fax standard transmission completed in 1 to 2 minutes across our test runs.
Il secondo test ha utilizzato un modulo simulato di referti di laboratorio di un centro medico fittizio. Non sono stati utilizzati dati reali di pazienti. Il documento è stato concepito come un test di stress piuttosto che come uno scenario di flusso di lavoro reale: nella pratica clinica, i flussi di lavoro via fax raramente includono immagini diagnostiche, ma la striscia ECG incorporata su carta a quadretti rossi è stata inclusa deliberatamente per spingere al limite le capacità di ciascun servizio. Ciò che è tipico è la combinazione di dati di laboratorio, valori di flag, note scritte a mano dal medico e timbri PHI, tutti elementi che compaiono regolarmente nei flussi di lavoro via fax in ambito sanitario.
The image below shows the master document used in this test, transmitted without modification to every service tested. All names, patient identifiers, and clinical data are fictional. No real patient information was used.
Cosa conteneva il documento di prova:
In un flusso di lavoro reale, un valore di flag che arriva illeggibile o un'istruzione scritta a mano che non si riesce a leggere non è solo un problema di qualità, ma rappresenta un rischio clinico.
The streak cuts directly across the Potassium row in the metabolic panel. The result value (4.2 mEq/L), reference range (3.5 to 5.1), and status on that row are struck through and unreadable. Glucose above (flagged H) and every row below stay legible, the EKG trace survives the red grid background in reasonable condition, the handwritten physician note is clear, and the CONFIDENTIAL/PHI stamp came through cleanly. Outside the streak the output is solid. Inside it, a row of patient data is gone.
Clean output, every metabolic-panel row legible including Potassium, all H and L flag values readable, EKG partially retained. The reference baseline for standard-quality faxing.
A genuine higher-resolution fax: every panel row sharp, flags crisp, the EKG trace and barcode cleaner, handwriting sharp. The high-resolution fax tier Dropbox Fax does not offer.
Fax.Plus Normal completed in approximately 1 minute. Fax.Plus HD completed in approximately 3 minutes. Dropbox Fax standard transmission completed in 1 to 2 minutes across our test runs.
The streak is not predictable, it cuts across actual content rather than margins, and it appeared on enough of our standard sends to be a documented pattern rather than a one-off. On the healthcare document it took out the Potassium row: result value, reference range, and status gone. On the IRS form it struck the item C address line. A recipient on the other end of either document has no way to recover that content. It is intermittent, not constant: on one send where we ticked the high-resolution color version checkbox, the fax page came through clean, which is consistent with the streak being a transmission glitch rather than anything tied to a quality setting. There is no control a sender can rely on to prevent it.
Without the streak, Dropbox Fax Standard output would sit at Fax.Plus Normal level: white background, readable tables, clean stamps, legible handwriting. The streak is specifically what holds this section to 3/5.
The "Send high-resolution color version of fax" checkbox in the send flow does not raise the fax transmission quality. The recipient gets the standard fax, plus a HelloFax cover page carrying a URL and an access code. Entering that code at the URL downloads the original uploaded file. The result is functionally identical to the sender emailing a download link. The fax line is just the delivery mechanism for the URL, and the file the recipient downloads is the original source document, not a fax at all. We left that download out of the quality comparison because it is the source image, not a transmission.
The URL printed on the cover page is www.hellofax.com/HighRes. The www.hellofax.com domain does redirect automatically to app.hellofax.com, but the redirect does not carry through to the /HighRes path, so the printed URL returns an error. The working address is app.hellofax.com/HighRes directly, undocumented and not printed anywhere the recipient can see. A recipient who follows the printed instructions will hit an error. The cover page template has not been updated since HelloFax became Dropbox Fax in 2024.
For a digital recipient who notices the discrepancy, corrects the URL, and acts within 72 hours, the download is genuinely useful. For a recipient on a physical fax machine, or anyone who follows the instructions as printed, it does not work. And at that point, sending the document as an email attachment would have been simpler.
Dropbox Fax Standard sits above both eFax and iFax at their respective default tiers. eFax Standard output was softer with more fine-detail loss on both document types. iFax Standard carried heavy grey background wash and wave-like dithering throughout the page. Dropbox Fax has neither of those problems.
The streak is what separates it from Fax.Plus Normal, which it would otherwise match. Fax.Plus exposes a genuine per-fax quality toggle at the point of sending (Normal or HD on the same screen as the recipient field), and the HD output is a higher-resolution fax transmission, not a file download workaround. For document-heavy workflows where output consistency matters, that is the relevant comparison. The 3/5 reflects an output that is better than most direct rivals but falls short of the consistency standard a production workflow requires.
Dropbox Fax is the cheapest credible subscription faxing we have reviewed, as long as you read the renewal terms before you subscribe.
The lineup is simple. The Free plan includes 5 fax pages total (a one-time allowance, not monthly), sending only, with up to 20 more pages earned through referrals. After that, pay-as-you-go costs $0.99 per fax for up to 10 pages plus $0.20 for each page after, still with no subscription.
300 pages per month, up to 5 senders, an inbound fax number with your choice of area code, email-to-fax, and receiving. The first month is discounted to $2.50. Overage on every paid plan is $0.05 per page sent or received, among the lowest in the category.
Professional includes 500 pages and 10 senders; Small Business includes 1,000 pages and 20 senders. These two tiers are also the only ones that support porting an existing fax number in. Dropbox's help documentation confirms a $60 per line charge and limits porting to US and Canadian numbers only.
There is one more tier the public pricing page does not show. Inside the app, an Ultimate plan appears at $69.99/month for 2,000+ pages and 40 senders, which we only found after creating an account. A larger corporate tier beyond that still means contacting sales.
Annual billing is available via the toggle on the pricing page. Those rates are Home Office $93.74/year ($7.81/mo), Professional $187.49/year ($15.62/mo), and Small Business $374.99/year ($31.25/mo), each roughly 22 percent below the monthly rate, saving close to two and a half months compared to paying month to month. Ultimate runs $671.90/year, about 20 percent off.
Every paid plan discounts the first month to 25% of the regular rate. The pricing page states there are no setup fees, no cancellation fees, and no contract.
The Dropbox Sign Terms of Service, which govern Dropbox Fax, put the key billing mechanics in writing. Section 8.4 states, in capitals: automatic charges apply at the end of the trial or at renewal unless the customer notifies Dropbox of cancellation. Section 9.2 renews each subscription term automatically unless notice is given at least 30 days before it ends.
The yearly-plan clause deserves particular attention. Section 8.6 specifies that a cancellation takes effect at the end of the current term. On a yearly subscription, that means the following year. Combined with the no-refund policy, an annual commitment here is genuinely annual.
At $0.033 per page, Dropbox Fax edges out every service in this table on raw cost per page, including Fax.Plus Basic at $0.035 per page, and is the only subscription service here with a true pay-as-you-go path. Fax.Plus Basic has the lower entry price at $6.99/mo. For a feature-by-feature view of what the next tier up buys, the Fax.Plus pricing page publishes every limit, which is the level of transparency the unpublished Dropbox corporate tier lacks. The 4/5 reflects genuinely strong value in the category (the lowest per-page cost, the only pay-as-you-go option, and the lowest overage rate), held back from a 5 by Fax.Plus undercutting the absolute entry price and by the no-refund policy adding billing risk that a clean top score would require addressing.
Dropbox Fax inherits a strong compliance stack from Dropbox Sign, the platform it runs under. The problem isn't the credentials, it's that the fax product itself has no published BAA and no encryption specs of its own.
Dropbox Sign holds a broad portfolio: ISO/IEC 27001, ISO/IEC 27018:2019, SOC 2 Type 2, SOC 3, HIPAA, HITECH, PCI DSS, CCPA, and GDPR, plus data-transfer frameworks like the EU-U.S. DPF and eIDAS.
On encryption, the Trust Center confirms data is encrypted at rest and in transit, but it never states an AES bit length or TLS version for the fax product. Fax.Plus, by contrast, publishes its full certification set, AES-256 encryption at rest, and TLS 1.3 in transit directly.
Short answer: no Dropbox Fax plan is sold as HIPAA compliant, and none includes a Business Associate Agreement (BAA).
HIPAA appears as a badge in the Dropbox Sign Trust Center, but it belongs to Dropbox Sign, the e-signature product, not fax. The only fax-side hint is an unlabeled contact-sales column listing "HIPAA and SOC 2" with no price.
The Terms make it firmer. Section 4.2(xii) forbids using the Services to handle Protected Health Information unless you've separately signed a BAA. Since no self-serve fax plan includes one, faxing PHI through these plans doesn't just lack support, it breaks the Terms of Service. A healthcare team trusting the footer badge would be signing up for something the plans don't offer.
People confuse these two. HIPAA compliance means a provider has the safeguards to protect health information. A BAA is the contract that actually permits you to send PHI through them. You need both. Without a signed BAA, even a fully certified service can't legally process PHI.
With Dropbox Fax, the issue isn't whether the platform has HIPAA controls, it's that no self-serve plan publishes a BAA option. Buyers can't tell from the pricing page which tier, if any, authorizes HIPAA fax workflows or what it costs. The only route is contact-sales with no published price. eFax, by comparison, at least lists a BAA on its $39.99 Business plan.
The platform-level stack is real and that is what earns the 3/5. The Trust Center certifications (ISO/IEC 27001, SOC 2 Type 2, HIPAA, HITECH, PCI DSS) belong to Dropbox Sign as a whole, and Dropbox Fax runs under that umbrella.
What caps the score is the lack of fax-specific disclosure: no encryption standard published for fax transmissions, and no self-serve BAA. Both are table stakes for fax services aimed at regulated buyers. A reviewer will find the platform credentials solid but still hit a wall at the plan level.
The cleaner benchmark is Fax.Plus, which publishes its compliance stack at the organization level and pairs it with a named BAA tier and stated AES-256 encryption, so a healthcare buyer can see exactly what they get before contacting sales.
The web flow really is simple. It is also the only flow there is.
The portal is built around a left-hand navigation (Home, Faxes with Sent, Received, and Drafts views, Teams, Integrations, Sign documents) with a prominent Send faxes button, and sending runs through a two-step wizard: pick the document, review, send. The built-in editor lets you fill out and sign a form before sending without touching a printer.

Cloud pickup worked from Dropbox, Google Drive, Box, and OneDrive alike, which makes the upload step the strongest part of the product, although document uploads occasionally stalled noticeably longer than the same files took on rival services. The Sent list labels every transmission clearly, though the explanation behind a failure is thin: a question-mark icon with little detail, leaving you to guess whether to retry or change the file.

There is also no address book. The recipient field expects a fax number typed in manually every time; the only way to get autocomplete is connecting a Google account, and even then there is no way to view, edit, or manage those contacts inside the app. For a product aimed at repeat business faxing, that is a strange gap.
The portal is also visibly a legacy product. You sign in at app.hellofax.com, two years after the rebrand, your cover page goes out with HelloFax branding, and the interface pushes upgrades persistently. Recent Trustpilot reviews raise consistent complaints about reaching the free plan, with upgrade prompts at most turns.

Dropbox Fax has no iOS app and no Android app. Dropbox's own help center confirms it, arguing you do not need an app because mobile faxing works through a browser tab or by emailing an attachment to a @hellofax.com address. The email route requires a paid plan.
Receiving notifications, checking send status, and managing your number from a phone all run through the same browser workaround.
For desk-based occasional sending, Dropbox Fax's web simplicity holds up against anything in the category. But the market expectation in 2026 includes native mobile apps: eFax, iFax, RingCentral, and Fax.Plus all ship iOS and Android apps, with Fax.Plus rating 4.8/5 on the App Store and 4.7/5 on Google Play. A service whose own help center argues you do not need an app is making a virtue of a gap. The 3/5 reflects a web experience that is genuinely clean and well-integrated, scored down by the absence of mobile apps, a legacy interface that predates the 2024 rebrand, and the lack of an address book for repeat senders.
Dropbox Fax has the easiest cancellation flow among the services we have reviewed, and the hardest company to reach when anything else goes wrong.
Support is a web form. There is no phone number and no live chat on any plan, and the pricing page FAQ covers a handful of questions before pointing you to that form. We submitted a support request during testing and the experience matched the long-running Trustpilot pattern: responses arrive by email on the company's schedule, and reviewers from 2019 through 2025 consistently describe waits ranging from days to never.
To be fair: when the product works, users rarely need support at all, and the praise reviews almost never mention contacting the company. The complaint pattern concentrates among users with billing problems, which is exactly when unreachable support hurts most.
Two things are worth flagging before you cancel. Porting in is self-serve on Professional and Small Business plans: go to Teams, click Port numbers, enter your number to check eligibility, and follow the email prompts. The fee is $60 per line, US and Canadian numbers only. Porting out is a different story: no port-out process is documented anywhere in Dropbox's help center or terms.
Stated plainly in the Terms: section 9.5 gives Dropbox the right to delete your data any time after 30 days from termination.
**Important:** Once your account closes, Dropbox may delete your stored faxes any time after 30 days, and no port-out process for your fax number is documented. Download everything you need, and start any number migration, before you cancel.
The official path is fully self-serve: log in, hover over your initials in the top-right corner, select Settings, click the Billing tab, then click Cancel plan. The account then runs to the end of the billing cycle and downgrades to free. No call, no retention script.
The exceptions: yearly plans run to the end of the current year; the discounted first month converts to the full monthly rate automatically at the end of the first billing period unless canceled; refunds are not provided.
The recurring pattern on Trustpilot from 2020 through 2025 is billing that outlives the relationship: a trial converting into a year-long charge, monthly charges continuing after an account was closed, and an annual payment joined by monthly fees. A separate delivery-reliability thread appears in more recent reviews, with faxes reported as sent that recipients never received. Dropbox Fax's Trustpilot score stands at 2.0/5 across 22 reviews, against a 4.5/5 on G2 from 57 reviews that skew toward 2020-2023 and include vendor-invited reviewers. Both numbers are real; the gap between them is the difference between solicited and unsolicited feedback.
The self-serve cancel flow beats the call-to-cancel mazes some legacy fax vendors still run, and that is worth crediting. But the surrounding posture (form-only support, zero refunds, undocumented port-out, a 30-day data deletion window) is among the most restrictive we have reviewed. Most rivals at this price point staff at least one live channel, and transparent per-tier policies like the published limits on the Fax.Plus pricing page show what buyers can reasonably expect to know before subscribing. The 2/5 reflects web-form-only support on every plan with no escalation path, a Trustpilot score of 2.0/5 concentrated on billing and unreachability, and billing terms that leave customers with little recourse after the fact.
Dropbox documents its GDPR transfer mechanisms properly and publishes a sub-processor list, which is more than some rivals manage. The Trust Center names Amazon Web Services as the infrastructure provider, which is more transparency than the privacy policy alone offers. But the regional residency control that does exist belongs to the e-signature side of the platform, not to fax, and no hosting region is published for fax data specifically.
Every plan markets secure cloud storage, and the privacy policy retains personal information for the period necessary to fulfill its purposes, with no published per-plan retention caps and no user-facing retention controls. After account termination, the 30-day deletion clause from section 9.5 applies.
The Dropbox Sign platform does offer regional data residency, including an EU option, with at-rest documents stored in the AWS region you select, for example Frankfurt with a backup in Paris. But that control is documented for Sign's e-signature documents, not for the fax product. The setting lives in the Sign admin console under Documents and templates, the default region for all plans is the US, and it is gated to Premium tiers. No equivalent region choice is published for sent or received faxes, which appear to default to US storage.
The GDPR paperwork is otherwise in order: SCCs and the EU-U.S., UK, and Swiss Data Privacy Frameworks all appear. But for a buyer with European clients or sector localization rules, a platform-level EU option that cannot be applied to fax data specifically is still only a partial answer.
The market's transparent end looks like user-selectable data residency across 20+ regions, which Fax.Plus offers on its Enterprise tier; SRFax similarly names its Canadian hosting. Dropbox Fax inherits a platform that names AWS and even offers EU residency for Sign documents, but publishes no region choice for fax data itself.
The 2/5 reflects that naming AWS and documenting GDPR transfers is a step above pure silence, but the absence of any published region or user control for fax data specifically means regulated buyers with localization requirements cannot complete their evaluation here.
Dropbox Fax has a real, documented API. The gaps are in what surrounds it.
The Fax API lives inside the Dropbox Sign developer documentation and publicly documents five endpoints: send a fax, retrieve one, list them, download documents, and delete. The docs carry a v1-to-v3 migration guide, which signals the API is maintained rather than abandoned.
Access requires contacting support to upgrade to the Fax API plan, which is common in the category. What sets this apart is what is missing from the public documentation: no published API pricing, no fax-specific webhook documentation, and no OAuth implementation guide on the public pages. A developer evaluating the API cannot determine cost or integration scope before reaching out.
As of June 2026, Dropbox Fax does not publish a dedicated MCP server for fax automation, so AI-agent workflows have no clear public route into the product beyond the available Fax API. For developer teams exploring AI-assisted document workflows, this matters because MCP gives agents a standardized way to interact with external tools.
Teams evaluating this type of workflow can compare Dropbox Fax's API-only public path with a published MCP server for AI-agent workflows, especially if they are experimenting with tools like Claude, the OpenAI Agents SDK, or other MCP-compatible environments.
There is none: no healthcare-specific product line, no EHR integrations, and, as covered above, no fax BAA to build on.
A documented five-endpoint API puts Dropbox Fax ahead of consumer-only services, but the missing webhook docs, unpublished API pricing, and absence of OAuth documentation leave gaps that matter at evaluation time. Teams looking at programmatic faxing can compare what fuller public API documentation looks like on a dedicated Fax API page, while teams exploring agent-based workflows can also review a published MCP server. For healthcare automation specifically, this product is not in the running. The 3/5 reflects a maintained API that earns the category midpoint, held back by documentation gaps, no public MCP path for fax workflows, and no healthcare-specific product line.
The strongest alternative to Dropbox Fax overall. Modern, high-quality cloud fax for individuals, teams, and enterprises. HIPAA compliant, ISO 27001, SOC 2 Type II, with an advanced fax API including OAuth 2.0 and MCP server support, plus a clean experience across web, desktop, and mobile. Plans range from a free tier to enterprise.
Best for: Users who want reliable fax quality, modern UX, broad compliance, and developer-ready integrations, from solo users to large teams.
Canadian-based cloud fax with HIPAA and PHIPA compliance, BAA included on healthcare plans, transparent pricing, and a REST API. Email-to-fax focused, no modern mobile app. US and Canada only.
Best for: US and Canadian healthcare teams that need HIPAA/PHIPA support and predictable pricing, especially if email-to-fax is enough for their day-to-day workflow.
Free, no-account faxing: up to five free faxes a day of three pages each with a branded cover page, or $3.29 per fax for up to 25 pages. No inbound number, no storage, no subscription to manage.
Best for: occasional users who need to send a quick fax without creating an account, managing a subscription, or receiving inbound faxes.
Free: 5 pages total, send-only. Pay-as-you-go: $0.99 per fax up to 10 pages, then $0.20 per page. Home Office: $9.99/month for 300 pages. Professional: $19.99/month for 500. Small Business: $39.99/month for 1,000. An in-app Ultimate tier adds $69.99/month for 2,000+ pages. Paid-plan overage is $0.05 per page.
No self-serve Dropbox Fax plan lists HIPAA compliance or includes a BAA. The Terms of Service prohibit customers from using the Dropbox Sign Services to store, transmit, or otherwise process PHI without a separately signed HIPAA Business Associate Agreement, which means PHI faxing is not authorized through the public self-serve fax plans. Healthcare teams should look at services with published fax BAA tiers, such as SRFax from $12.60/month, eFax Business at $39.99/month, or Fax.Plus Enterprise.
For occasional desk-based sending, yes: the free 5 pages, pay-as-you-go option, and $9.99 plan with 300 pages are about as cheap as faxing gets. For anyone needing HIPAA, a mobile app, reachable support, or refunds, it scored 2.9/5 in our review and stronger options exist.
No. There is no iOS or Android app; Dropbox's help center confirms it. Mobile faxing means using the browser at app.hellofax.com or emailing documents to a @hellofax.com address, which requires a paid plan.
Yes. HelloFax launched in 2011, came to Dropbox through the $230 million HelloSign acquisition in 2019, and was rebranded Dropbox Fax in 2024. The app still runs at app.hellofax.com and cover pages still carry HelloFax branding.
It depends on the gap that matters: Fax.Plus for modern apps and a published compliance stack, SRFax for low-cost healthcare BAA coverage, FaxZero for free one-off sending.
Porting in is self-serve on Professional and Small Business plans: go to Teams, click Port numbers, enter your number to check eligibility, and follow the prompts. There is a $60 per line fee, and porting is limited to US and Canadian numbers. Porting out is a different matter: no port-out process is documented anywhere in Dropbox's help center or terms. Plan any number migration before you cancel, not after.
It does not send a higher-quality fax. When you tick the checkbox, the recipient gets the standard fax, plus a HelloFax cover page with a URL and access code. Entering the code at that URL lets them download the original uploaded file within 72 hours. The fax page itself is standard quality. There is also a bug: the cover page prints www.hellofax.com/HighRes, which does not work. The www.hellofax.com domain redirects automatically to app.hellofax.com, but that redirect does not carry through to the /HighRes path. The working address is app.hellofax.com/HighRes, but it is not printed anywhere the recipient can see. For a recipient on a physical fax machine, or anyone following the printed instructions, the feature does not work.
