Which messaging and payment tools sign a BAA?
The answer
Of the 12 messaging and payment tools in Curve Compliance's BAA Directory, 1 signs a BAA outright, 3 sign one only on specific plans, 3 don't sign one and 5 make no public statement, as of October 2026. A BAA with any of them covers that tool, not the ad pixels on your pages.
Checked on each vendor's own page between and .
Curve Compliance keeps your ad tracking HIPAA-compliant around these tools, under a BAA on every plan. Book a call
On this page
The list
| Tool | Answer | Conditions | Checked |
|---|---|---|---|
| Documo (mFax) | Signs a BAA | Every plan; one BAA covers all Documo products | |
| eFax | Signs a BAA on specific plans | eFax Business, eFax Corporate and eFax Unite | |
| Fax.Plus | Signs a BAA on specific plans | Enterprise plan, with Advanced Security Controls | |
| Twilio | Signs a BAA on specific plans | Security or Enterprise Edition; HIPAA-eligible products | |
| iMessage | Does not sign a BAA | License bars PHI and business associate use | |
| QuickBooks | Does not sign a BAA | QuickBooks Online: not HIPAA compliant; health information not recommended | |
| Does not sign a BAA | Business Platform terms: not HIPAA compliant | ||
| PayPal | No public statement | No BAA statement found; PHI barred in Invoicing | |
| Signal | No public statement | No BAA statement found | |
| Stripe | No public statement | No BAA statement found; PHI barred in Third Party Data | |
| Telegram | No public statement | No BAA statement found | |
| Venmo | No public statement | No BAA statement found |
Select a tool for the vendor's own words, the source link and what the answer means for your ad tracking. The BAA Directory report has the counts for every category.
For more on each tool, read our guides to HIPAA compliant texting apps and HIPAA compliant fax services.
What to check before you pick one
- The plan, edition or add-on the BAA needs, when the answer is specific plans, and whether yours includes it.
- What the BAA covers and leaves out. Each entry lists it where the vendor says so.
- Who signs it and how: some vendors have an admin accept the BAA inside the account, others send it through sales.
- The date we checked. Vendors change their plans and terms, so confirm the current terms with the vendor before you send it patient data.
Picking several tools at once? The BAA stack checker shows the answer for each tool you use.
The ad tracking gap these tools leave
A BAA with a messaging and payment tool covers the data that tool handles for you. A pixel on the same page sends data to a different company, and this directory lists Meta, Google Ads and TikTok as not signing a BAA. The conversion your campaigns learn from has to reach them without health information.
How Curve helps
- Curve carries the conversion signal to your ad platforms separately, under its own BAA, so you can keep the tools you use for what they do well.
- Curve replaces browser ad pixels with one script and sends conversions server-side to Meta, Google Ads, TikTok, Microsoft Advertising and LinkedIn from Curve's servers.
- Curve detects PHI-like patterns, such as condition names, form answers and emails in URLs, before data reaches an ad platform, and flags them so they can be stopped at the source.
- Each platform receives only a fixed list of fields. Contact identifiers are off by default on Meta, Google Ads and TikTok, and events can use neutral names.
- Event Logs show what Curve sent to each platform and what the platform accepted.
- Curve signs a BAA on every plan, and Curve's team does the setup for you, typically live in about a week.
Book a call with Curve and Curve's team will walk through your tracking setup with you.
Frequently asked questions
Which messaging and payment tools sign a BAA?
In Curve Compliance's BAA Directory, Documo (mFax) signs a BAA outright, and eFax, Fax.Plus and Twilio sign one only on specific plans. Each entry quotes the vendor and gives the date we checked.
Is a messaging and payment tool HIPAA compliant without a BAA?
Not for patient information. A HIPAA covered entity needs a business associate agreement with any vendor that handles its patients' Protected Health Information. A vendor page that calls a tool HIPAA compliant is not the same as a signed BAA, so keep patient information out of the tool until the vendor signs one with you.
Do I need a BAA with a messaging and payment tool?
A HIPAA covered entity needs one with any vendor that handles its patients' Protected Health Information, for example in bookings, intake answers or messages. Each entry in this list says whether the vendor signs a BAA and on which plans.
Does a BAA with a messaging and payment tool cover my ads?
No. A BAA covers the data one vendor handles for you. A pixel sends data from the visitor's browser to Meta, Google or TikTok, and none of them is a party to that BAA. Curve Compliance sends your conversions to them server-side, with a fixed list of fields, under the BAA it signs on every plan.
Does Curve Compliance sign a BAA?
Yes. Curve Compliance signs a BAA on every plan, and Curve's team does the HIPAA-compliant setup, typically live in about a week. Book a call to get started.
Track ad conversions under a BAA
Curve signs a BAA on every plan. Curve's team sets up HIPAA-compliant conversion tracking for you in about a week, sending conversions server-side in place of pixels.
Book a call