ISO 27001 Certification Solutions
ISO 27001 Compliant
Email Security Software
SafeMailer is ISO 27001 compliant email security software that encrypts every message and attachment with AES-256-GCM at rest and TLS 1.3 in transit, verifies each recipient through an existing Google or Microsoft account, and records the audit evidence certification reviews ask for. It runs inside Gmail and Outlook, and the platform itself holds ISO 27001 and SOC 2 Type II certification.
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Most audit findings on email trace back to the same gap. Sensitive information leaves the organization every day through a channel with no encryption, no access control, and no record of who opened what. SafeMailer closes that gap without moving staff onto a new platform, so security teams protect contracts, credentials, financial documents, and intellectual property inside the email tools people already use. You can see the full sending flow on the how SafeMailer works page.
Why ISO 27001 Compliance Requires Email Security
ISO/IEC 27001 is the international standard for an information security management system, or ISMS. It requires organizations to identify risk across people, processes, and technology, then apply controls that match the sensitivity of the information they hold. Email carries more of that sensitive information than any other channel, which places it directly in scope for certification and for every surveillance audit that follows.
A typical inbox holds financial records, HR files, vendor contracts, customer data, and confidential attachments. Without encryption and controlled access, that information is exposed to leakage, insider misuse, and audit findings. Auditors now expect evidence that email handling is enforced by technical controls, not left to individual habit.
What an ISO 27001 Email Environment Needs to Protect
- Data in transit between senders, recipients, and mail servers
- Data at rest in mailboxes and message storage
- Data shared with external parties and vendors
- Access permissions on every message and attachment
- Audit and activity records that prove the controls operate
ISO 27001 Email Security Controls Mapped to Annex A
ISO 27001 is risk-based rather than prescriptive, so it does not name a specific tool. It does expect technical controls that protect sensitive information, and the 2022 revision of Annex A maps several of them directly to email. The table below shows the mapping and how SafeMailer satisfies each control in practice.
| Annex A control | What it requires | How SafeMailer supports it |
|---|---|---|
| A.8.24 Use of cryptography | Sensitive information is protected with appropriate encryption | AES-256-GCM encryption at rest and TLS 1.3 in transit on every message and attachment |
| A.5.14 Information transfer | Information moving inside and outside the organization stays controlled | Identity-verified delivery, with forward blocking and download blocking senders can apply per message |
| A.5.15 Access control | Access to information is restricted to authorized users | Recipients authenticate through their existing Google or Microsoft account before a message opens |
| A.8.15 Logging | Activity is recorded and available for review | Audit trails record message opens, recipient identity, and access changes for certification evidence |
| A.8.12 Data leakage prevention | Measures detect and prevent unauthorized disclosure | Access revocation, One Time View, and inbound filtering reduce exposure before and after delivery |
ISO 27001 Email Policy Checklist
Auditors ask for a documented email policy and for proof the policy is enforced. A defensible ISO 27001 email policy covers eight points.
Core Email Controls That Support Certification
SafeMailer turns each written statement into an enforced control, so the policy your auditor reads matches the behavior your logs show. For the records side of the checklist, the email retention compliance guide explains how retention obligations map to common frameworks.
How SafeMailer Implements ISO 27001 Email Encryption
Automatic Email Encryption
Messages plus attachments are protected using AES-256-GCM encryption at rest and TLS 1.3 while in transit. This is applied automatically, or on demand, and it meets the cryptography control in Annex A with a stated and verifiable standard.
Recipient Identity Verification and Access Control
Every recipient authenticates via the Google or Microsoft account they already have before a message even opens. Senders are able to block, forward and download per individual message, and they can revoke permission at any moment, which helps keep the flow of information inside the approved limits, more or less as intended.
ISO 27001 Secure File Sharing
Large and sensitive attachments travel through protected delivery instead of open links, with files up to 2 GB on the Standard plan and unlimited file size on Pro. The guide to secure file sharing via email covers the workflow in detail.
Audit Logs and Monitoring
SafeMailer records message opens, confirms recipient identity, and tracks sharing activity, producing the operational evidence certification and surveillance audits request.
Gmail and Outlook Integration
Encryption runs inside the tools staff already use, with nothing to install for senders or recipients, which removes the human error behind most email exposure.
Benefits for Organizations Seeking Certification
This enforcement model follows the same principle as zero trust email security, where no message is trusted until the identity behind every access request is verified.
Confidentiality, Integrity, and Availability
ISO 27001 is built on three objectives, and SafeMailer supports all three for email.
Confidentiality
Only verified recipients can open a protected message, so sensitive information is never exposed to the wrong reader.
Integrity
Controlled delivery and recipient verification reduce the chance a message is tampered with or reaches the wrong hands unnoticed.
Availability
Authorized users reach the information they need without security slowing down legitimate work.
Who Needs ISO 27001 Compliant Email
Healthcare
Financial Services
Government
Defense & Aerospace
Technology & SaaS
Education
Manufacturing
Telecommunications
Finance and fintech teams carry information that draws the closest scrutiny, and can pair ISO 27001 controls with SafeMailer financial email security solutions for client communication and confidential transactions.
Why Certified Teams Choose SafeMailer as Their ISO 27001 Email Solution
SafeMailer is not only built for ISO 27001 programs, it operates under one. The platform is certified against ISO 27001 and SOC 2 Type II, which means the vendor answers on your procurement questionnaire are backed by independent audits rather than marketing language. Deployment carries no rollout project either, since there is nothing to install for senders or recipients, and the first encrypted message can go out the same day the account is created. Pricing is per sender and published in full: the free plan includes 10 encrypted emails per month, Standard is 47.99 dollars per month for 500 encrypted emails, and Pro is 96.99 dollars per month for 1,000 encrypted emails with unlimited file size. Full details sit on the SafeMailer pricing plans page, and every plan starts without a credit card.
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ISO 27001 Email Security FAQs
ISO 27001 email security is the set of technical controls that bring email inside an information security management system: encryption of messages and attachments, identity verification for every recipient, restricted access, and logged activity. The goal is that sensitive information sent by email stays readable only to authorized people, and that an auditor can verify the controls operate.
ISO 27001 does not name a specific product, but it requires organizations to protect sensitive information based on a risk assessment, and for email that assessment points to encryption in almost every case. Control A.8.24 on the use of cryptography is the standard route, and encrypting sensitive email in transit and at rest is the accepted way to satisfy it.
In the 2022 revision of Annex A, the controls most relevant to email are A.8.24 on the use of cryptography, A.5.14 on information transfer, A.5.15 on access control, A.8.15 on logging, and A.8.12 on data leakage prevention. SafeMailer maps to each one with encryption, verified recipient access, per message sender controls, and audit trails.
An ISO 27001 email policy defines what information must be encrypted, which channel is approved for sending it, how recipients are verified, the rules for external sharing, what activity is logged and retained, and how access is revoked after a mistake. SafeMailer enforces each statement technically, so the policy holds without depending on every employee remembering the rules.
Yes. SafeMailer holds ISO 27001 certification and SOC 2 Type II attestation. That matters twice: your email channel gains controls that map to Annex A, and your vendor risk assessment records a certified supplier, which shortens the procurement and audit conversation.
The best ISO 27001 compliant email software encrypts with a stated standard, verifies every recipient, produces audit logs, and works inside the email your staff already use. SafeMailer meets all four conditions with AES-256-GCM encryption at rest, TLS 1.3 in transit, Google and Microsoft identity verification, complete audit trails, and native operation in Gmail and Outlook, starting on a free plan.
When sensitive files leave the organization by email, the information transfer control applies, so the attachment must stay protected and access must be restricted to the verified recipient. SafeMailer encrypts attachments alongside the message, supports files up to 2 GB on Standard and unlimited size on Pro, and lets senders block downloads or revoke access after delivery.
Yes. SafeMailer runs directly inside Gmail and Microsoft Outlook, so staff keep their normal workflow while messages are encrypted, recipients are verified, and activity is logged. Keeping the familiar tools is also a control in itself, because it removes the workarounds that appear when secure email is harder to use than regular email.