Compare/Head to head

Instantly vs Premium Inboxes

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

Starting price

Instantly

$47/mo Free trial

Cold-email infra for teams farming many sending mailboxes. Public Outreach start is $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

Premium Inboxes

$3.50/inbox/mo

Done-for-you Google Workspace and Microsoft 365 inboxes for outbound sending, from $3.50 per inbox per month.

Where Premium Inboxes fits

  • Outbound recruiting teams that need real Workspace or M365 boxes
  • Agencies standing up client domains
  • Desks that want DNS and warmup handled
  • Buyers who need a public API on every plan

At a glance

DetailInstantlyPremium Inboxes
Starting price$47/mo$3.50/inbox/mo
Free tier–No–No
Free trialYesNot on record
MCP server✓Yes–No
Public API✓Yes–No
Listed underOutreachDeliverability

Where they pull apart

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

Premium Inboxes

Stands out: Official Workspace and M365 inboxes with free replacements and sub-six-hour setup.

Watch out: It supplies the inboxes only. You still need a sequencer to send, and there is no MCP.

Not the right fit for

  • Teams that only need a sequencer, not inboxes
  • Buyers who want MCP

Pros and cons

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

Premium Inboxes

  • Official Workspace and M365, not lookalike domains
  • Setup in under six hours
  • Public API on all plans
  • No MCP
  • You still need a sequencer to send

What each one costs

Instantly

$47/mo

Outreach plans: Growth $47/mo ($37.60/mo billed yearly) for 5,000 emails and 1,000 contacts, Hypergrowth $97/mo for 125,000 emails and 25,000 contacts, and Light Speed $358/mo 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 22 Oct 2026

Premium Inboxes

$3.50/inbox/mo

From $3.50/inbox/mo. Confirm current pricing on the vendor site.

Checked 7 Sep 2026

Common questions

Is Instantly cheaper than Premium Inboxes?
Premium Inboxes starts lower, at $3.50/inbox/mo against $47/mo for Instantly. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try Instantly or Premium Inboxes for free?
Neither carries a free tier on our listing. Instantly offers a free trial.
Does Instantly or Premium Inboxes have an MCP server?
Instantly ships a first party MCP server, so an AI assistant can work the product directly.

Not the pair you wanted?

All Instantly alternatives All Premium Inboxes alternatives Every Outreach tool

Editorial listings, never paid rankings. Prices checked 22 Oct 2026. Confirm current terms on the vendor site. Spot an error?