Pick Warmbox if
solo outbounders who want a $15–$19 warmer and will pick the provider themselves.
Read the Warmbox pageWarmbox vs Warmup Inbox
Our take
Pick Warmbox if you're solo outbounders who want a $15–$19 warmer and will pick the provider themselves. Pick Warmup Inbox if you're on a cold-email team who want to write the warmup, not accept canned pool copy. Skip Warmbox if you're on a team that need an expert on the plan (Mailwarm) or a sender with warmup included (Smartlead). Skip Warmup Inbox if you're a sender who want warmup bundled in Instantly /
Best for
Warmbox Warm one inbox cheaply
Warmup Inbox Control the warmup copy
Free plan
Warmbox No free plan
Warmup Inbox No free plan
Lowest paid
Warmbox Solo (1 inbox, 50 emails/day, 1 member) $15
Warmup Inbox Basic $15/mo yearly
Next step up
Warmbox 3 inboxes (250 emails/day, 3 members) $69
Warmup Inbox Pro $49
Watch out
Warmbox No free tier
Warmup Inbox Priced per inbox
Last checked
Warmbox 2026-10-28 · warmbox.ai/pricing
Warmup Inbox 2026-10-28 · warmupinbox.com/pricing
Which one, then?
Pick Warmup Inbox if
cold-email teams who want to write the warmup, not accept canned pool copy.
Read the Warmup Inbox page