Encryption
Specify TLS 1.2/1.3 for transport and AES-256 at rest, plus requirements for end-to-end or gateway encryption when PHI or sensitive financial data is present.
A focused addendum reduces ambiguity about the security and admissibility of email communications, aligns expectations with ESIGN and UETA principles, and helps manage compliance risks for regulated data, including HIPAA and FERPA contexts.
Organizations that exchange confidential or regulated information by email use this addendum to set minimum security and handling standards before communications begin.
The addendum is useful whether parties use legacy email, hosted mail with encryption, or integrated eSignature workflows that deliver documents by email.
Specify TLS 1.2/1.3 for transport and AES-256 at rest, plus requirements for end-to-end or gateway encryption when PHI or sensitive financial data is present.
Define allowable signer and recipient authentication (email link, SMS OTP, knowledge-based, multi-factor) and conditions requiring stronger methods.
Set rules for role-based access, password policies, and account provisioning/deprovisioning for anyone with mailbox or archive access.
State required retention periods, tamper-evident audit log capture, and the format in which records must be preserved for evidentiary reuse.
Define incident notification windows, responsible contacts, escalation steps, and whether forensic recordings will be shared.
List permitted subprocessors, require BAAs where PHI is involved, and obligate prior notice for new vendors that handle secure email flows.
| Field | Configuration |
|---|---|
| Signature Method | Email link with optional SMS OTP |
| Authentication Strength | MFA for signers of PHI |
| Document Expiry | 30 days default; extendable |
| Audit Capture | Enable IP, timestamp, and user-agent logging |
Define technical prerequisites for e-delivery, audit logging, and archival integrations before deploying the addendum.
Ensure your chosen platform can produce tamper-evident PDFs, retain audit trails, and offer a BAA if PHI is processed.
Default 30 days from request
Acknowledge within 48 hours
Initial findings within 10 business days
Annual security and clause review
Effective date of the agreement
| signNow | DocuSign | Adobe Sign | PandaDoc | HelloSign | |
|---|---|---|---|---|---|
| Starting Price | $8/user/mo | $15/user/mo | $14/user/mo | $19/user/mo | $15/user/mo |
| Free Trial | 7-day free trial | Varies by plan | Varies by plan | Varies by plan | Varies by plan |
| Bulk Send | Yes | Yes | Yes | Yes | No |
| Audit Trail | Yes | Yes | Yes | Yes | Yes |
| HIPAA Compliant | Yes | Yes | Yes | No | No |
Local real estate firm adopted the addendum to secure tenant communications and signed lease amendments online
Healthcare provider added an addendum and BAA to protect patient consent forms sent by email