SEGs have been a staple of email security for years—but as threats evolve and architectures change, many teams are rethinking whether an SEG still fits their needs. This practical guide walks through how to approach an SEG migration with clarity and confidence, from planning and stakeholder alignment to vendor evaluation and rollout.

Whether you’re considering a full replacement or a phased approach, you’ll get a grounded framework for making the right call—and executing without breaking mail flow or creating chaos for IT and security teams.

What you’ll learn

How to assess whether an SEG migration is the right move (and what “success” should look like)  

Key planning steps and timeline considerations to reduce migration risk  

Common pitfalls that slow or derail SEG migrations—and how to avoid them  

How to compare migration approaches (including “rip & replace” vs. incremental strategies)  

Practical guidance for rollout, validation, and change management across stakeholders

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