Lemwarm vs Warmup Inbox

Two Outbound tools side by side: what each does, what it costs and who it suits.

The verdict Side by side Plans and pricing Who each is for Other options

The verdict

On the data we hold, Warmup Inbox comes out ahead. Here is why, point by point.

What the data says

Warmup Inbox covers more of the features we compared: 5 of 5, against 3.
Warmup Inbox starts lower, at $15/mo against $24/mo.
Only Lemwarm has an MCP server, so an AI employee can work in it directly.
In our Outbound ranking, Warmup Inbox places 6 and Lemwarm 17 of 33.

Side by side

Lemwarm and Warmup Inbox compared
9 points compared	Lemwarm	Warmup Inbox
Starts at	$24/mo	$15/mo
Free plan	No	No
API	Yes	Yes
MCP server	Yes	No
Automated warmup network	Yes	Yes
Built-in email warmup	Yes	Yes
Built-in outreach/sequences	No	Yes
Inbox placement testing	No	Yes
Sender reputation & blacklist monitoring	Yes	Yes
Links	Visit	Visit

Plans and pricing

Lemwarm

EssentialEmail warm-up, technical checks, deliverability reports, 20000+ domain network$29/mo/seat
SmartPersonalised warm-up, template warm-up, custom alerts, industry-tailored network$49/mo/seat

Warmup Inbox

BasicPer inbox per month; 75 warm-up messages a day. Volume discounts as you add inboxes.$15/mo
ProPer inbox per month; 250 warm-up messages a day plus custom templates and scheduling.$49/mo
MaxPer inbox per month; 1,000 warm-up messages a day plus API access and premium support.$79/mo

Prices as the vendors list them. They change often; the final price is on their sites.

Who each is for

Choose Lemwarm if…

Sales teams and founders who send cold email from new or rarely used mailboxes and need warm-up, sending limits and deliverability checks, and who already use or plan to use lemlist.

Visit Read the review

Choose Warmup Inbox if…

Sales, SDR and agency teams about to send cold email from new mailboxes, who need those mailboxes warmed up and monitored so campaigns reach the primary inbox.

Visit Read the review

Other options worth a look

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Lemlist
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Apollo
Find B2B prospects and run email and phone outreach campaigns from one unified platform.
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Instantly
Sends high-volume cold email across multiple mailboxes with automated warmup and a unified reply inbox.
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From $85/mo yearlyAffiliate link
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Reply.io
Automates outreach across email, LinkedIn, calls and SMS to coordinate your sales prospecting in one place.
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Smartlead
Run cold email outreach at scale with unlimited mailboxes, warm-up automation and lead verification.
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From $32/mo yearly
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Dealfront
Identifies website visitors by company and provides EU-based B2B contact data with buyer intent signals.
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From €79/mo yearlyFree planAffiliate link
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