Warmy vs Lemwarm: pricing, features, and verdict for 2026

Warmy runs about $49 a month per mailbox on its old published tiers, and pricing is now hidden behind a demo call. Warmy is a standalone warmup and deliverability monitoring tool, but its opaque pricing and per-mailbox billing punish teams past 10 inboxes. The strongest picks in 2026 are Warmy for cross-ESP deliverability scoring, Lemwarm for teams already inside lemlist, and Instantly for warmup bundled free into a sending platform.

By Rishabh Ambasta, Founder, Modern Inbound.

Warmy vs Lemwarm: the numbers

Lemwarm is cheaper for existing lemlist users and Warmy is pricier but broader. Here's how the two stack up against a third option, Instantly, for teams weighing warmup bundled into a full sending platform instead of a standalone tool.

How do Warmy and Lemwarm actually price out?

Lemwarm is the better deal only if you already pay for lemlist. Warmy is the better deal only if you need it as a standalone tool across non-lemlist sending stacks.

Lemwarm's Essential plan runs $29/mo per inbox standalone, or $24/mo billed annually, per MailReach's pricing breakdown of Lemwarm. Pay for lemlist's Email Pro, Multichannel Expert, or Outreach Scale plan and that seat is free, with the Smart tier discounted to $20/mo per inbox instead of $49, per lemlist's own help center. Warmy's public tiers used to run $49 to $429 a month by mailbox count, but as of 2026 the pricing page requires a demo call before it shows a number, per Findstack's Warmy pricing page. That opacity alone is a red flag for a 12-inbox agency trying to budget in October.

Which one actually does more for deliverability?

Warmy wins on breadth. It scores inbox placement across providers and flags spam-trigger issues before you notice open rates dropping.

Lemwarm's warmup network covers 20,000+ domains across 150+ countries and handles the basics well: automated sending, replying, and technical setup checks, per lemlist's own product page. What it doesn't do is give you a standalone deliverability score outside lemlist's ecosystem. Warmy adds spam-trigger detection and blacklist monitoring on top of warmup, closer to what MailReach and Instantly bundle in. For teams sending 500+ emails a month across mixed domains, that extra visibility matters more than the $20 a month you'd save going bare-bones.

So who should actually pick which tool?

If you're already running lemlist, Lemwarm is the obvious call. Everyone else should think harder before paying Warmy's custom quote.

Agencies under 20 people managing client inboxes across Gmail, Outlook, and self-hosted SMTP get more from Warmy's cross-ESP dashboard, assuming the quote lands reasonably. Founders running a single sending tool should just use whatever's bundled. Lemlist users get Lemwarm free. Instantly users already get unlimited warmup included, which makes paying for either Warmy or Lemwarm on top redundant. The honest take: Warmy is overpriced for teams under 10 inboxes, and Lemwarm only wins because lemlist bundles it, not because the warmup engine itself beats the field.

FAQ

Is Lemwarm free with lemlist?

Yes. Every paid lemlist plan, Email Pro and above, includes a free Lemwarm Essential seat per inbox. Upgrading to the Smart tier costs $20/mo per inbox for lemlist users instead of the standalone $49/mo rate, per lemlist's help center.

How much does Warmy.io cost per month?

Warmy's published tiers historically ran $49 to $429 a month depending on mailbox count, per Findstack's pricing breakdown. As of 2026, Warmy gates pricing behind a demo call, so exact current numbers require contacting sales directly.

Can I use Lemwarm without a lemlist subscription?

Yes, Lemwarm runs standalone at $29/mo per inbox, or $24/mo billed annually. You lose the bundled discount lemlist subscribers get, but the warmup network and reports work the same either way.

Do I even need Warmy or Lemwarm if I use Instantly?

Probably not for warmup specifically. Instantly includes unlimited warmup on every paid Outreach plan starting at $47/mo, so layering Warmy or Lemwarm on top mostly duplicates a feature you're already paying for.

Warmup keeps a domain out of spam. It doesn't write the copy or find the accounts that turn into meetings. Modern Inbound handles the outbound end to end, infrastructure included, if you'd rather not manage five deliverability tools yourself, at moderninbound.com/setup.