Compare/Head to head

Folderly vs Unspam

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

Starting price

Folderly

$79/mo Free tier

Folderly tests email deliverability and monitors inbox placement. Inbox Insights has a free tier with 2 tests a month, then $79/mo for 100 tests.

Where Folderly fits

  • Outbound teams whose mail is landing in spam and need placement proof
  • RevOps watching DMARC and inbox placement across many domains
  • Agencies that want a deliverability report to show clients
  • Senders who already have warmup and now need monitoring

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

DetailFolderlyUnspam
Starting price$79/mo$5/mo
Free tier✓Yes✓Yes
MCP server–No✓Yes
Public API–No✓Yes
Listed underDeliverabilityDeliverability

Where they pull apart

Folderly

Stands out: The product is placement and authentication (SPF, DKIM, DMARC, seed-list inbox tests), not a warmup bot and not a sequencer.

Watch out: Folderly does not send your campaigns. You still need Instantly, Smartlead, or Google Workspace as the actual mail server.

Not the right fit for

  • Teams that only need a $15 warmup mailbox
  • Buyers looking for a cold-email sequencer

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

Folderly

  • Inbox placement tests rather than warmup-only
  • Free tier with 2 placement tests a month
  • Useful when the problem is DNS and reputation, not copy
  • Does not send or warm the mail for you
  • Overlap with Instantly's built-in placement features

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

Folderly

$79/mo

Inbox Insights (placement tests before you launch) has a free tier with 2 tests a month, then $79/month for 100 tests, or $799 a year. The core Folderly deliverability product is $96 per mailbox per month on yearly billing. Pulse spam-placement alerts are free. 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 Folderly cheaper than Unspam?
Unspam starts lower, at $5/mo against $79/mo for Folderly. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try Folderly or Unspam for free?
Folderly and Unspam carry a free tier on our listing.
Does Folderly or Unspam have an MCP server?
Unspam ships a first party MCP server, so an AI assistant can work the product directly.

Not the pair you wanted?

All Folderly alternatives All Unspam alternatives Every Deliverability tool

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