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Move between email service providers without losing reputation, subscribers, or deliverability. A structured plan from audit to full cutover.
List every campaign, automated flow, transactional email, and template. Note send volumes, frequencies, and which segments receive them.
Export all contacts with fields: email, signup date, last open date, last click date, bounce status, unsubscribe status, custom fields. You need engagement history for warmup segmentation.
Hard bounces, unsubscribes, complaints, and manually suppressed addresses must move to the new ESP. Failing to transfer these is a compliance and deliverability risk.
Run your list through validation. Remove invalids, catch-alls with high risk, and subscribers who have not engaged in 12+ months. Start fresh in the new platform.