Mailwarm
7.3#2 in email warmup softwareFrom $69 a monthAndroidiOSWeb
VisitMailwarm identifies sales and outbound teams, founders launching domains, agencies managing inboxes and businesses recovering from spam placement as users it serves. It may suit teams seeking warmup and deliverability monitoring through a web service.
WarmEnvelopes is for people managing their own or authorized domains who can send to consenting inboxes through Resend. Its configurable Pro ramp may suit users who need to set daily sending volumes.