Compare/Head to head

InboxEagle vs Unspam

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

Starting price

InboxEagle

$39/mo

InboxEagle monitors inbox placement, authentication, and blocklists from $39/mo flat, any list size, with 10 seed inboxes included on Email Deliverability.

Where InboxEagle fits

  • Klaviyo senders who want inbox placement and DNS alerts without a consultant
  • Agencies watching several brands from one command center
  • Teams that need seed-list folder movement beyond the included 10 inboxes
  • High-volume senders who also want a monthly deliverability retainer

Unspam

$5/mo Free tier

Unspam is a pre-send spam checker that scores an email, tests inbox placement and previews it in real email clients. It suits recruiters and small agencies who want to check a BD template or sequence step before it goes out, without paying for a full deliverability suite. There is a usable free plan, and the paid Custom plan is pay per test from a $5 monthly minimum.

Where Unspam fits

  • Recruiters testing a cold email template before launch
  • Small agencies that want pay per test pricing
  • Teams who want AI explanations of spam warnings
  • Builders who want to run spam tests from Claude or ChatGPT

At a glance

DetailInboxEagleUnspam
Starting price$39/mo$5/mo
Free tier–No✓Yes
MCP server–No✓Yes
Public API–No✓Yes
Listed underDeliverabilityDeliverability

Where they pull apart

InboxEagle

Stands out: The $39/mo Email Deliverability SKU is flat regardless of list size, and bundles Google Postmaster, Klaviyo campaign sync, SPF/DKIM/DMARC alerts, and an AI agent that opens incidents when placement breaks.

Watch out: Ten seeds are included. Extra seed-list panels start at $99/mo for 100 seeds. DMARC aggregate processing and Audience Selection are separate SKUs. Consulting retainers start at $499/mo.

Not the right fit for

  • Cold-email inbox warmup shops (this is monitoring, not infrastructure or warmup)
  • Senders who need 200+ seed tests in the $39 SKU. That is a separate seed-list product

Unspam

Stands out: Unspam combines a spam score, seed list placement test, 50+ client previews and an AI assistant that explains fixes, and the free plan already includes 21 tests a month plus the AI assistant. Its pay per test Custom plan starts at $5 a month, far below the flat monthly fees of most placement testers.

Watch out: The API, MCP server, DMARC monitoring and scheduled tests all need the paid Custom plan, and the free plan keeps results for only 14 days. It tests and diagnoses emails but does not warm up mailboxes or send campaigns.

Not the right fit for

  • Teams that need mailbox warmup
  • High volume senders wanting a flat unlimited plan
  • Anyone who needs results kept long term on a free account

Pros and cons

InboxEagle

  • Email Deliverability is $39/mo flat, any list size, with 10 seeds
  • Klaviyo plus Google Postmaster on the monitoring SKU
  • AI incident agents open and close placement/authentication issues
  • Only 10 seeds in the $39 plan. Larger panels are extra
  • DMARC volume processing and audience AI are separate subscriptions
  • No published product trial on monitoring. Consulting gets a 30-minute scoping call

Unspam

  • Free plan with 21 tests a month
  • AI assistant explains each fix
  • Pay per test from $5 a month
  • API and MCP only on paid plan
  • Free results kept 14 days
  • No warmup or sending

What each one costs

InboxEagle

$39/mo

Email Deliverability is $39/mo flat for brands at any list size, or $19/mo for agencies. Seed List Testing starts at $99/mo for 100 seeds (agencies from $79/mo). DMARC Processing starts at $99/mo for 10,000 profiles. Audience Selection starts from $39/mo. Consulting retainers: Growing $499, Established $999, Enterprise $1,999 per month. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Unspam

$5/mo

Unspam can be used with no account for 3 spam tests, 2 inbox placements and 1 device preview a month. The Free plan costs $0 and includes 21 tests a month (5 spam tests, 3 inbox placements, 3 device previews, 5 screenshots and 5 heatmaps), the AI assistant and 14 day data retention. The paid Custom plan is pay per test with a $5 monthly minimum, rates that drop with volume, DMARC monitoring, Autopilot scheduled tests, 3 year retention, full API and MCP access. Email verification costs from $6.40 per 1,000 addresses. Annual billing takes 15% off and every paid plan has a 14 day refund. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Common questions

Is InboxEagle cheaper than Unspam?
Unspam starts lower, at $5/mo against $39/mo for InboxEagle. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try InboxEagle or Unspam for free?
Unspam carries a free tier on our listing.
Does InboxEagle or Unspam have an MCP server?
Unspam 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?