Warmy and Warmbox both warm up your mailboxes so cold emails land in the inbox, but they differ in scope and price. Warmbox is a focused warm-up tool from $15/mo for one inbox. Warmy is a wider deliverability platform from $49/mo with placement tests, reputation tracking, DMARC monitoring, and a 7-day trial. Here is which one fits.
If you want a cheap, simple warm-up for a few inboxes, go with Warmbox. If you want warm-up plus placement tests, reputation tracking, and expert support in one platform, go with Warmy.
| Tool | Starting price | Free access | Network size | Best for |
|---|---|---|---|---|
| Warmy | From $49/mo, volume-based | 7-day trial | 1M+ real mailboxes | Agencies and teams that want a full deliverability stack |
| Warmbox | Solo $15/mo (1 inbox) | None | 35,000+ private inboxes | Small teams that only need warm-up |
Warmy warms up domains and mailboxes in a network of more than 1 million real mailboxes, with separate B2B and B2C plans and the Adeline AI co-pilot that suggests what to fix.
Price: Plans start from $49/mo, with volume-based pricing, a 7-day trial, and a custom plan for larger senders. Best for: Cold email senders, agencies, and sales teams.
Warmbox sends and interacts with emails like a real person (opening, replying, favoriting, and removing from spam) across a network of 35,000+ private inboxes.
Price: Solo $15/mo (1 inbox, 50 emails/day), Start-up $69/mo (3 inboxes, 250 emails/day), Growth $139/mo (6 inboxes, 500 emails/day). Best for: Sales and marketing teams running cold email campaigns.
Warmbox focuses on warm-up, with a live email checker for DNS and blacklist status and a reputation dashboard. Warmy adds placement tests across a 500K+ US seed list, a reputation tracker, Google Postmaster data, DMARC monitoring, a templates optimizer, and email verification.
Warmy lists 1M+ real mailboxes at Google Workspace, Microsoft 365, Gmail, Yahoo, and Outlook. Warmbox lists 35,000+ private inboxes across major providers.
Warmbox is cheaper to start at $15/mo, but the price rises with each inbox you add. Warmy starts at $49/mo and scales with the warm-up volume you need.
Warmy includes a dedicated deliverability expert and 24/7 human support. Warmbox offers reporting and team seats on higher plans.
Pick Warmbox if you manage one to six inboxes and want a low-cost warm-up. Pick Warmy if deliverability is central to your business and you want testing, monitoring, and expert help. Compare more in our email deliverability and warm-up tools collection.
Which is cheaper, Warmy or Warmbox? Warmbox starts at $15/mo for one inbox. Warmy starts from $49/mo.
Does Warmy have a free trial? Yes, a 7-day trial. Warmbox has no free plan.
Do I still need a sending tool? Yes. Both warm up mailboxes, so you send campaigns from a platform such as Smartlead or Woodpecker.
Is there another warm-up option? Warmup Inbox is billed per inbox from $15/inbox/mo with a 7-day trial.
Thomas
Founder
Thomas is the founder of AIPick.info and an avid AI enthusiast dedicated to testing and reviewing the latest tools. He believes technology should make life easier and more enjoyable for everyone. Beyond providing practical reviews, Thomas aims to build an uplifting space where AI feels accessible, delivering insights with energy, positivity, and a commitment to helping others innovate with a smile.
