Observed Signal · Apr 28, 2026 · Best Practices · Source: https://martech.org/feed/ · Impact: 2/5 · Sentiment: Neutral
Ten Lessons from Real-World ESP Migrations
This MarTech article (published 2026-04-28) outlines ten practical lessons for organizations migrating between email service providers (ESPs). It emphasizes that ESP migrations are cross-functional initiatives affecting data architecture, templates, deliverability, automation flows, and multiple teams. The piece cites rising migration activity driven by evolving martech (including AI) and vendor sunsets, giving examples such as Bronto (sunset 2022) and Yotpo (removed email/SMS in 2025). Lessons cover stakeholder alignment, overlap planning and budgeting, list cleanup, careful attribute mapping, deliverability/authentication setup (SPF/DKIM/DMARC and warm-up), conservative change management, reusable templates, QA for dynamic content, auditing triggers/webhooks, and a 30–60 day post-migration validation plan. The article frames migration as a strategic initiative requiring clear goals, cross-team coordination, and C-level backing.
ESP migrations materially affect deliverability, data flows, and cross-functional operations; practical guidance reduces migration risk and potential revenue/operational disruption but is not an industry-shifting policy or platform change.
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Key Takeaways & Evidence Grounding
- Article lists 10 practical lessons for migrating email service providers (ESPs).
- ESP migrations are increasing due to advancing martech (including AI) and vendor sunsets.
- Examples cited: Bronto was sunset in 2022; Yotpo removed email and SMS functionality in 2025.
- Critical technical steps include mapping attributes, setting up SPF/DKIM/DMARC, and planning IP/domain warm-up.
- Published on 2026-04-28 (per page metadata).
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