Mergers, Acquisitions & Demergers Email Security Strategy

Mergers, Acquisitions & Demergers Email Security Strategy

Email Security Strategy made easy during challenging & complex business transformation.

When organisations embark on a merger, acquisition, or demerger, email security often becomes a complex and high-stakes challenge. Integrating or separating systems, managing data migration, and maintaining secure, reliable email delivery require a robust strategy to protect business continuity and reputation.
Navigating Complexity: Email Security During Change

Navigating Complexity: Email Security During Change

  • Disrupted Email Delivery: Inconsistent routing and misconfigured connectors can lead to mail loops, delivery failures, or messages landing in the wrong mailboxes.
  • Email Address Changes: Changes to email domains, aliases, and naming conventions can cause confusion for users, customers, and partners.
  • Data Migration Risks: Large volumes of email and archives often need to be moved between platforms or providers, with potential for data loss or corruption.
  • Security Policy Gaps: Misalignment of security controls, policies, and anti-phishing measures across merging or splitting entities can expose users to threats.
  • User Experience Challenges: Users may experience confusion around login credentials, mailbox access, or the timing of migrations, affecting productivity and trust.
  • Communication Across Teams: Coordinating efforts between IT, security, legal, compliance, and business teams can be challenging in the face of differing priorities and timelines.

The Desired Future State

  • Secure and Reliable Email Flows: All email flows are secure and reliable, with no missed messages or disrupted communication.
  • Minimal User Disruption: Users experience minimal changes, with clear guidance and support at every step.
  • Planned & Validated Data Migrations: Data migrations are carefully planned, executed, and validated for accuracy and completeness.
  • Harmonised Security Policies: Security policies are harmonised to protect users and data, regardless of which system or domain they belong to.
  • Aligned Cross-functional Teams: Cross-functional teams are aligned on objectives, timelines, and responsibilities, ensuring that email security is a shared priority.
The Desired Future State
Required Capabilities

Required Capabilities

  • Detailed Integration Planning: Early, thorough design of email flows, domain routing, MX record management, and directory synchronisation.
  • Data Migration Expertise: Proven methodologies for exporting, transforming, and importing email data while ensuring integrity and compliance.
  • Security Posture Assessment: Evaluation of existing email security controls, phishing defences, and compliance configurations across all parties.
  • Policy Harmonisation: A unified approach to anti-spam, anti-phishing, encryption, and threat protection that spans the integrated or separated environment.
  • User Communication Planning: Clear, consistent messaging to guide users through any changes in email access, logins, or functionality.
How Cydaura Helps

How Cydaura Helps

  • Objective Guidance: As an independent consultancy, we're not tied to any vendor's sales targets. We focus on what's best for your organisation.
  • Proven Track Record: Our team of former Mimecast technical consultants have supported some of the most complex email transitions across industries.
  • Structured Engagements: We begin with a discovery phase to understand your current state, then develop a tailored migration and security plan aligned to your business priorities.
  • Customer Example: One of our clients, a multinational financial services firm, engaged us during a cross-border merger. We developed a phased migration strategy that harmonised their email security controls, ensuring continuous communication and zero critical message loss throughout the transition.
Our team's background in Mimecast Professional Services means we understand both the technology and the organisational dynamics at play. We're trusted advisors, known for our ability to collaborate effectively with internal and external teams — from security and compliance to legal and IT — to achieve smooth, secure transitions.
Book a Free Consultation

Book a Free Consultation

If you're planning or navigating a merger, acquisition, or demerger, let's talk. Book a free consultation to discuss how we can help you develop a secure, effective email strategy that ensures business continuity and protects your users.