List triage
Contacts sorted by age, engagement and risk.
Wake up old lists safely
Revive an old email list without wrecking your sender reputation.
WarmupList cleans and re-engages dormant email lists in small, safe batches, so you can email old contacts again without a spike in bounces, complaints or spam placement.
This month's funnel
Dormant list40,000
Verified31,200
Re-engaged8,400
Ready to email8.4k
What WarmupList does
Cold-list re-engagement before campaigns. Every service below can be taken on its own or combined into one plan.
Verification pass
Dead and risky addresses removed first.
Re-permission campaigns
Friendly 'still interested?' emails that confirm consent.
Batch ramp
Volume increased gradually by engagement tier.
Sunset rules
Never-engaged contacts retired automatically.
Clean export
A healthy, engaged list ready for your main campaigns.
How it works
A clear, four-step process so you always know what happens next and when.
Upload
Send us your dormant list.
Clean
Verification and risk scoring.
Re-engage
Small batches of re-permission emails.
Return
A clean, engaged list back to you.
Who we work with
Built for teams that want dependable results without managing another vendor closely.
E-commerce brandsEvent organisersPublishersSaaSNonprofits
14–28 daysrevival cycle
<0.1%complaint target
Engagedlist returned
Ready when you are.
Tell us a little about your business and we will reply within one working day with next steps.