Compare/Head to head

Folderly vs InboxEagle

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

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

At a glance

DetailFolderlyInboxEagle
Starting price$79/mo$39/mo
Free tier✓Yes–No
MCP server–No–No
Public API–No–No
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

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

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

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

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

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

Common questions

Is Folderly cheaper than InboxEagle?
InboxEagle starts lower, at $39/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 InboxEagle for free?
Folderly carries a free tier on our listing.

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