Best cold email warmup tools (and when you don't need one)
Standalone warmup tools charge per inbox, and that adds up fast across 30+ cold email inboxes. Here are the main warmup tools' published prices next to the sequencers that include warmup for free.
Last checked 2026-10-25 · prices from each tool's pricing page
Verdict by use case
Instantly, Smartlead, Saleshandy, lemlist, Reply.io and Woodpecker all include it.
Freemium plan; paid from $15/inbox/mo.
From $49/mo with placement tests, verification and DMARC monitoring.
Included in lemlist; standalone from $29/account/mo ($24 annual).
Per-mailbox pricing incl. 20 spam test credits.
Standalone warmup tools
| Tool | Pricing model | Entry price | Other plans | Free option | 30 inboxes / mo | Link |
|---|---|---|---|---|---|---|
| lemwarm | Per email account | Essential $29/mo per account ($24 annual) | Smart $49/mo per account ($40 annual) | Included in all lemlist plans | $870 | Pricing |
| Warmup Inbox | Per inbox | Basic $15/inbox/mo | Pro $49/inbox/mo · Max $79/inbox/mo | Freemium plan ($0) | $450 | Pricing |
| Warmy | Volume-based (warmup emails generated) | Plans from $49/mo | Includes placement tests, email verification, DMARC monitoring | 7-day free trial | — | Pricing |
| MailReach | Per mailbox (calculator), includes 20 spam test credits | Per-mailbox pricing via calculator; 20% off annual | Spam tester sold separately or bundled | — | — | Pricing |
USD list prices on monthly billing unless noted, from each tool's pricing page on 2026-10-25. "30 inboxes" is only computed for tools priced per inbox at their entry plan.
Sending tools that include warmup
| Tool | Warmup |
|---|---|
| Instantly | Unlimited warmup on every plan, from $47/mo |
| Smartlead | Warmup included, from $39/mo |
| Saleshandy | Unlimited warmup, from $41/mo ($34 annual) |
| lemlist | lemwarm included in all plans, from $69/mo ($55 annual) |
| Reply.io | Warmup included with every mailbox, from $59/mo |
| Woodpecker | Free warmup listed as a plan feature |
Full plan details: cold email software pricing. Some inbox providers also offer warmup. See the Warmup column in the mailbox price table.
Frequently asked questions
What is the cheapest email warmup tool?
Among standalone tools, Warmup Inbox has a free plan and paid plans from $15 per inbox per month. But most sending tools (Instantly, Smartlead, Saleshandy, lemlist, Reply.io, Woodpecker) include warmup at no extra cost, which is cheaper if you already pay for one.
Do I need a separate warmup tool?
Usually not, if your sequencer includes unlimited warmup. A standalone tool makes sense when you send from a platform without warmup, need placement testing and reputation monitoring, or are repairing a damaged domain.
How much does warmup cost for 30 inboxes?
Priced per inbox, standalone warmup gets expensive: 30 × $15 (Warmup Inbox Basic) = $450/mo and 30 × $29 (lemwarm Essential) = $870/mo, vs $47/mo for Instantly Growth or $39/mo for Smartlead Base with warmup included.
How long should I warm up a new inbox?
2–3 weeks at low volume before cold campaigns, then keep warmup running at a low level while you send.