ProtonMail
by Proton
FedRAMP Status
Not FedRAMP Authorized
Impact Level
N/A
Category
Overview
ProtonMail is a Swiss-based encrypted email provider focused on privacy. Despite its strong encryption, it is not FedRAMP authorized and data residency outside the US disqualifies it for CUI handling.
CUI Risk Assessment
Not FedRAMP authorized. Using this tool for CUI creates compliance violations under NIST 800-171 and DFARS 252.204-7012.
NIST 800-171 Violations
Using ProtonMail for CUI without FedRAMP authorization may violate these NIST 800-171 controls:
FedRAMP Compliant Alternatives
Frequently Asked Questions
Is ProtonMail FedRAMP authorized?
No. ProtonMail is not FedRAMP authorized. Its servers are located in Switzerland, which does not meet US data residency requirements for CUI.
Can I use ProtonMail with CUI?
No. Despite end-to-end encryption, ProtonMail lacks FedRAMP authorization and US data residency, creating NIST 800-171 violations for CUI handling.
What is a compliant alternative to ProtonMail?
Microsoft 365 GCC High (FedRAMP High) and Google Workspace Government (FedRAMP Moderate) are authorized email platforms for defense contractors.
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