Garde1 vs PreVeil for CMMC. An overlay that holds only if everyone uses it, every time.

A second inbox everyone has to remember, every time, or the boundary is gone.

PreVeil is an encrypted mailbox and drive beside your real email, and only CUI goes in. The boundary holds exactly as long as every person uses the PreVeil side, every time; one drawing from the normal inbox and it is gone. Its Compliance Accelerator is a model-company SSP and fourteen SOPs you customise, with consultants recommended for the customising.

“decided that there was no way we could trust users to know to send CUI things out PreVeil, and then use normal 365 for all the rest. We just started our GCC High conversion.”
A PreVeil customer after about a year · r/CMMC, February 2024

With PreVeil Consultant recommendedWith Garde1 No consultant needed

Who does the workStarted for you: policies and SSP.Yours: scope the boundary, collect evidence, fix the gaps, grade readiness, watch after you pass.Done for you: scope the boundary, policies and SSP, collect evidence, grade readiness, watch after you pass.Started for you: fix the gaps.

First year, all in$5,400 + the rest.Published for 3 users, paid a year upfront. Partners, mock audits ($3,000–$20,000, PreVeil’s estimate) and your existing email are extra.$23,988.Published: Starter $1,999 a month, Level 1 $1,800 a year. No readiness firm to pay, no seats resold; background checks are billed by Checkr at cost. Separate: the C3PAO, which DoD models at $31,234 for a small business (89 FR 83207), and the workspace licences you already pay for.

Firms you payTwo or three.PreVeil, a partner MSP or RPO, then the C3PAO.One.Garde1, then the C3PAO.

What you typeEverything outside the overlay: endpoints, training, evidence, fixes.Corrections to a draft.

Step by step

StepWith PreVeilWith Garde1

Onboard

Cost$450 a month for 3 users, twelve months paid upfront.Extra seats, the GRC add-on, partner firms and mock audits ($3,000–$20,000, PreVeil’s own estimate) are extra, and your existing email stays on its own bill.Starter $1,999 a month, published.The grading and the readiness review are in it.

Where CUI livesA second mailbox and drive that everyone must use for CUI, every time.The boundary holds only as long as they do.Wherever it already lives.Garde1 reads your tenants, tells you whether your CUI pushes you to GCC High, and hardens what you bring.

ScopeYours, with diagram templates.PreVeil covers 102 of 110 controls “through a combination of inherited and shared controls,” so most of those are still partly yours.Built from your answers and checked against your tenants, with the shared-responsibility split written into the SSP for you.

Operate

Policies and SSPA pre-filled SSP and fourteen SOPs built around “ACME Corporation.” PreVeil says they need customising and recommends consultants who know the package.14 policies and the SSP written from your environment, not a model company.A fact Garde1 cannot find is marked for you.

EvidenceYours to gather, for the eight uncovered controls and your side of the shared ones: endpoints, training, personnel, physical.23 connectors send it on their own, each item filed under the objective it proves.Uploads are for what no system can show.

Measure and remediate

Fixing gapsYours or your MSP’s, from a POA&M worksheet with “suggestions and examples.”Every gap with its fix.Supported fixes applied in your tenant once you approve them (Professional and up). Subject to the vendor’s API availability.

Are we ready?A progress dashboard.A mock assessment is an outside purchase.A mock assessment of all 320 objectives, scored against collected evidence.No override.

Prove

After certificationAssignments and reminders in the GRC add-on.No configuration monitoring claimed.Expired evidence and changed settings pull you back only when something breaks.

“Comprehensive documentation, authored by PreVeil’s compliance experts, which covers all 320 objectives.”
In their words: PreVeil, Compliance Accelerator page

What contractors say.

“Every assessment I’ve done with Preveil has failed bc the osc places to much reliance on it.”

A self-described assessor · r/CMMC, December 2025

“Aside from the PreVeil bits, which we still had to clean up and enhance, we were still doing ground up development of the docs.”

A former PreVeil customer on the Compliance Accelerator, later certified on Google Workspace · r/CMMC, April 2026

“The MSP auditors said it was almost impossible even with training. Or training only as the control that an employee will not mistakenly move it to the non-preveil environment.”

A small toolmaker who bought the Accelerator · r/CMMC, June 2026

“I think some of the smallest orgs to have passed a C3PAO audit have been using Preveil i.e. a 1-man shop. It definitely fills a very important and underserved market niche”

On where PreVeil fits · r/CMMC, December 2025

Quoted verbatim from public threads; individual users, not Garde1 customers.

When PreVeil is the better fit

A very small shop whose only CUI is email and files, with the discipline to keep every CUI item inside PreVeil, can get to an assessment on PreVeil alone. Some of the smallest certified contractors did. If PreVeil is your whole environment, Garde1 is not the right fit: PreVeil has no API, so there is nothing for Garde1 to read. A shop running PreVeil beside Microsoft 365 or Google Workspace is the fit: Garde1 connects to that tenant, applies PreVeil’s responsibility matrix (curated from PreVeil’s CRM v7.0, all 110 controls), and takes PreVeil’s own evidence by upload.

Checked October 6, 2026: PreVeil Pass · PreVeil: compliance package · PreVeil: product features · PreVeil: what is CMMC compliance · PreVeil on certification costs · The Defense Compliance Report. All alternatives side by side, or: Garde1 vs A CMMC consultant · Garde1 vs Vanta · Garde1 vs FutureFeed · Garde1 vs Delve · Garde1 vs Secureframe Defense · Garde1 vs Drata.

Step by step

What contractors say.

When PreVeil is the better fit

See your SPRS score this week.