Compare/Head to head

EmailGuard vs Warmbox

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

Starting price

EmailGuard

$49/mo Free tier

EmailGuard is a deliverability toolkit that monitors your sending domains and mailboxes and tests where your emails land. It suits recruiters and agencies running cold email across many secondary domains who want monitoring, placement tests and verification in one dashboard. Paid plans start at $49 a month and there is a free forever plan rather than a timed trial.

Where EmailGuard fits

  • Agencies running cold email across many secondary domains
  • Recruiters who want inbox placement tests before a BD campaign
  • Teams that need DMARC and blacklist monitoring in one place
  • AI users who want deliverability checks inside Claude or Cursor

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

DetailEmailGuardWarmbox
Starting price$49/mo$15/mo
Free tier✓Yes–No
MCP server✓Yes–No
Public API✓Yes–No
Listed underDeliverability, VerificationDeliverability

Where they pull apart

EmailGuard

Stands out: EmailGuard bundles inbox placement tests, blacklist and DMARC monitoring, domain masking proxies and contact verification in one subscription, where many teams pay separately for a placement tester and a verifier. It also ships its own MCP server with 86 tools, so you can ask Claude to check a domain's health instead of clicking through dashboards.

Watch out: Limits are set per plan by connected domains, mailboxes and test counts, so a growing outbound setup can force a jump from $49 to $129 or $199 a month. It does not warm up mailboxes or send your campaigns, so you still need a sequencer and a warmup tool alongside it.

Not the right fit for

  • Teams looking for mailbox warmup
  • Senders who need a campaign or sequencing tool
  • Single senders who only need an occasional spam score

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

EmailGuard

  • Free forever plan with real monitoring
  • Placement tests, DMARC and verification in one plan
  • Own MCP server and documented API
  • No mailbox warmup
  • Plan limits tied to domain and inbox counts
  • Annual pricing not published

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

EmailGuard

$49/mo

EmailGuard has a free forever plan with 1 domain, 3 email accounts, 50 contact verification credits, weekly blacklist and authentication checks, 10 spam filter tests and 20 content spam checks. Pro costs $49 a month for 25 domains, 100 email accounts, 3,000 verification credits, 300 inbox placement tests and 10 domain masking proxies or hosted redirects. Business costs $129 a month for 75 domains, 300 accounts, 20,000 verification credits and 500 inbox placement tests. Agencies costs $199 a month for 200 domains, 1,000 accounts, 50,000 verification credits and 1,500 inbox placement tests. A dedicated redirect IP is $100 a month extra, and custom plans are available through sales. No credit card is needed to start. 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 EmailGuard cheaper than Warmbox?
Warmbox starts lower, at $15/mo against $49/mo for EmailGuard. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try EmailGuard or Warmbox for free?
EmailGuard carries a free tier on our listing.
Does EmailGuard or Warmbox have an MCP server?
EmailGuard ships a first party MCP server, so an AI assistant can work the product directly.

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