Pick Instantly if
outbound teams who will buy inboxes and stay inside Instantly’s warmup pool.
Read the Instantly pageInstantly vs Warmup Inbox
Our take
Pick Instantly if you're on a outbound team who will buy inboxes and stay inside Instantly’s warmup pool. Pick Warmup Inbox if you're on a cold-email team who want to write the warmup, not accept canned pool copy. Skip Instantly if you're a rep who need the contact graph first (Apollo). Skip Warmup Inbox if you're a sender who want warmup bundled in Instantly / Smartlead, or a placement report (GlockApps).
Best for
Instantly Send from many mailboxes
Warmup Inbox Control the warmup copy
Free plan
Instantly No free plan
Warmup Inbox No free plan
Lowest paid
Instantly Growth $47/mo
Warmup Inbox Basic $15/mo yearly
Next step up
Instantly Outbound add-on $87/mo
Warmup Inbox Pro $49
Coding agent
Instantly AI Reply / Sales agents
Warmup Inbox
Watch out
Instantly Sends and contacts are two caps
Warmup Inbox Priced per inbox
Last checked
Instantly 2026-10-27 · help.instantly.ai
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