Smartlead 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, Smartlead comes out ahead. Here is why, point by point.

What the data says

Both cover 2 of the 2 features we compared.
Warmup Inbox starts lower, at $15/mo against $32/mo.
Only Smartlead has an MCP server, so an AI employee can work in it directly.
In our Outbound ranking, Smartlead places 5 and Warmup Inbox 6 of 33.

Side by side

Smartlead and Warmup Inbox compared
6 points compared	Smartlead	Warmup Inbox
Starts at	$32/mo	$15/mo
Free plan	No	No
API	Yes	Yes
MCP server	Yes	No
Built-in email warmup	Yes	Yes
Built-in outreach (sequences/dialer)	Yes	Yes
Links	Visit	Visit

Plans and pricing

Smartlead

Base2,000 contacts, 6,000 email sends and 2,000 verified emails per month; $39 monthly or $32 per month billed yearly.$39/mo
Pro30,000 contacts, 90,000 email sends and 30,000 verified emails per month; $94 monthly or $78 per month billed yearly.$94/mo
SmartUnlimited contacts, 150,000 sends and 50,000 verified emails per month; $174 monthly or $144 per month billed yearly.$174/mo
PrimeUnlimited contacts, 500,000 sends and 170,000 verified emails per month; $379 monthly or $315 per month billed yearly.$379/mo

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 Smartlead if…

Sales teams, SDRs and agencies running cold email outreach at volume who need many mailboxes, automated warm-up, lead verification and one inbox for all replies.

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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Identifies website visitors by company and provides EU-based B2B contact data with buyer intent signals.
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Hunter
Finds and verifies professional email addresses and sends cold email sequences from one workspace.
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