Compare/Head to head

Smartlead vs Warmbox

Same facts, side by side: starting price, free tier, MCP, API and what each one is actually built for.

Starting price

Smartlead

$32/mo Free trial

Agency cold-email infrastructure with unlimited mailboxes, warmup and client-separated accounts, from $32/mo billed annually with a no-card trial.

Where Smartlead fits

  • Agencies sending for multiple clients
  • Teams that need many mailboxes
  • Desks that want MCP on campaign infrastructure
  • Buyers who will start on a no-card trial

Warmbox

$15/mo

Warmbox runs automated email warmup to lift sender reputation. The listing floor is $15/mo.

Where Warmbox fits

  • New domains that need a warmup network before cold volume
  • Solo senders who want a dedicated warmup tool under $20/mo
  • Agencies warming many client inboxes on a low per-box bill
  • Teams that already sequence in Instantly and want a second warmup opinion

At a glance

DetailSmartleadWarmbox
Starting price$32/mo$15/mo
Free tier–No–No
Free trialYesNot on record
MCP server✓Yes–No
Public API✓Yes–No
Listed underLead generation, OutreachDeliverability

Where they pull apart

Smartlead

Stands out: Unlimited mailboxes plus separate client workspaces, with a hosted MCP.

Watch out: Email only: there is no LinkedIn channel and no finder in the same login.

Not the right fit for

  • Teams that need LinkedIn in the same sequencer
  • Buyers who want a finder in the same login

Warmbox

Stands out: $15/mo is the cheapest dedicated warmup listing in this set, below Mailreach's $20/mo and well below Folderly's $79/mo monitor.

Watch out: Warmup is not sending. You still need a sequencer. Results take weeks, and a burned domain will not be saved by a $15 plan alone.

Not the right fit for

  • Buyers who want inbox-placement analytics, not a warmup bot
  • Teams that expect warmup to replace authentication and list hygiene

Pros and cons

Smartlead

  • Public Base plan from $32/mo
  • Unlimited mailboxes and client accounts
  • Trial with no card
  • Email only, no LinkedIn
  • No contact finder included
  • Higher plans sit close above the entry price

Warmbox

  • Published $15/mo listing, low for a dedicated warmup network
  • Unbundled from any one sequencer
  • Simple job: reputation, not campaigns
  • Does not send campaigns or host mailboxes
  • Overlap with Instantly and Smartlead bundled warmup
  • Will not rescue a domain with a broken DMARC record

What each one costs

Smartlead

$32/mo

Base is $32/mo billed annually, or $39 monthly, for 2,000 contacts and 6,000 email sends. Pro is $78/mo annually or $94 monthly, Unlimited Smart $144 or $174, and Unlimited Prime $315 or $379. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Warmbox

$15/mo

Warmbox lists from $15/mo for automated email warmup. Confirm live per-mailbox versus flat pricing and any volume packs on the vendor pricing page. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Common questions

Is Smartlead cheaper than Warmbox?
Warmbox starts lower, at $15/mo against $32/mo for Smartlead. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try Smartlead or Warmbox for free?
Neither carries a free tier on our listing. Smartlead offers a free trial.
Does Smartlead or Warmbox have an MCP server?
Smartlead ships a first party MCP server, so an AI assistant can work the product directly.

Not the pair you wanted?

All Smartlead alternatives All Warmbox alternatives Every Lead generation tool

Editorial listings, never paid rankings. Prices checked 4 Nov 2026. Confirm current terms on the vendor site. Spot an error?