Compare/Head to head

InboxEagle vs Instantly

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

Instantly

$37.60/mo Free trial

Cold-email infra for teams farming many sending mailboxes. Outreach Growth is $37.60/mo billed yearly, or $47/mo monthly.

Where Instantly fits

  • Outbound recruiting teams sending at volume
  • Agencies running many sending accounts
  • Desks that need warmup plus a unibox
  • Recruiters who want an agent to find candidates and send first outreach

At a glance

DetailInboxEagleInstantly
Starting price$39/mo$37.60/mo
Free tier–No–No
Free trialNot on recordYes
MCP server–No✓Yes
Public API–No✓Yes
Listed underDeliverabilityOutreach

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

Instantly

Stands out: Warmup, unibox, and volume send with hosted MCP and a public API, plus an AI Recruiting Agent that finds candidates from a job link and emails them.

Watch out: Deliverability still depends on your domains and inboxes, not the tool alone.

Not the right fit for

  • Teams that only need LinkedIn messaging
  • Buyers looking for an ATS

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

Instantly

  • Warmup and unibox in the same desk
  • AI Recruiting Agent sources candidates and drafts outreach from a job link
  • Hosted MCP plus REST API
  • No-card get-started path on the vendor site
  • Sending domains and inboxes are bought separately
  • Sequence designer is plainer than multichannel rivals
  • Volume tiers step up quickly as mailboxes grow

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

Instantly

$37.60/mo

Outreach plans: Growth $37.60/mo billed yearly, or $47 monthly, for 5,000 emails and 1,000 contacts; Hypergrowth $85.58/mo yearly, or $107 monthly, for 125,000 emails and 25,000 contacts; and Light Speed $286.30/mo yearly, or $358 monthly, for 500,000 emails. Lead credits are a separate plan from $47/mo, and bundles of both start at $94/mo. Every plan has unlimited email accounts and warmup. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Common questions

Is InboxEagle cheaper than Instantly?
Instantly starts lower, at $37.60/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 Instantly for free?
Neither carries a free tier on our listing. Instantly offers a free trial.
Does InboxEagle or Instantly have an MCP server?
Instantly 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?