Swokei Email Warmup
7.3#3 in email warmup softwareFrom $42 a monthFree planWeb
VisitSwokei suits web design agencies and freelancers seeking website-based prospect research and personalized outreach. Its free option may fit someone exploring lead generation, but sending requires a paid plan.
WarmupHero suits people working on email campaign deliverability, including those who cold email and want to warm up an inbox. SmartReach.io users can access the listed free plan with SmartReach plans.