How do I re-engage a stale customer list without hurting my deliverability?

Warm up slowly and mail your most recent customers first. Start with people who bought in the last twelve months, send a few hundred a day, and only widen to older segments once opens and bounces look healthy. Blasting three thousand two-year-old addresses in one afternoon is the fastest way to get filtered.

Run the list through a verification service to strip dead addresses first, suppress anything that has hard bounced, and give the message a real reason to exist: a maintenance reminder, a service-area update, a seasonal check. Anyone who has not opened after about three attempts should be suppressed, not mailed again.

Sitting on a database you never mail? Book a free call →