Smartlead

Cold outreach platform with unlimited mailbox connections and a built-in warmup pool, for sales teams and agencies.

Smartlead runs multi-mailbox cold email campaigns with inbox rotation, and its warmup system sends, opens, and replies to mail from the moment a mailbox is connected. Warmup includes auto-pause on risk and adaptive scaling, with a larger warmup pool available on higher tiers. A white-label add-on is priced per client workspace for agencies.