Simple plans. Public prices.

Simple pricing, checks included.

Campaigns, warm-up and a unified inbox, with unlimited connected mailboxes on Growth and Scale. Every plan, including the free Sandbox, comes with email checks.

CheckMX is free during beta. No card required.

Sandbox

Free email checks + AI connector.

$0forever

Free to explore. No card needed.

Start free

Comes with email checks, free.

Your free toolkit

  • Free email checks
  • Single + bulk email checks (CSV)
  • AI connector for Claude, ChatGPT, Cursor (MCP)
  • API access
  • Outbound runs on Starter, free during beta.

Growth

More reach.
Room to experiment.

Coming soon
$87/mo

Billed monthly

Join waitlist

Comes with email checks, free.

Built for your next stage

  • 150,000 emails sent/mo
  • 300,000 contacts
  • Unlimited connected mailboxesBring your own Gmail/Outlook/SMTP
  • Warm-up included
  • Email checks included free
  • A/B testing + spintax
  • API + webhooks

Scale

Serious volume.
A personal touch.

Coming soon
$297/mo

Billed monthly

Join waitlist

Comes with email checks, free.

For outbound at full capacity

  • 500,000 emails sent/mo
  • 1,000,000 contacts
  • Unlimited connected mailboxesBring your own Gmail/Outlook/SMTP
  • Warm-up included
  • Email checks included free
  • Priority support

CheckMX is free during beta. Growth and Scale are coming soon; join the waitlist and we’ll email you when they open.

How we compare

What’s includedCheckMXGrowthInstantlyHypergrowthSmartleadPro
Monthly priceComing soon ($87/mo)$97$94
Price per 1,000 emailsComing soon ($0.58)$0.78$1.04
AI assistant cards in Claude, ChatGPT, Cursor✓ Included——
Emails sent / mo150,000125,00090,000
Contacts300,00025,00030,000
Connected mailboxesUnlimitedUnlimitedUnlimited
Warm-up included✓✓—
Free to startComing soon✓✓

Competitor pricing from their public pages as of Oct 30, 2026. — = not confirmed on the competitor's public pages. Price per 1,000 emails = monthly price ÷ monthly email cap. Sources: instantly.ai/pricing, smartlead.ai/pricing, emailbison.com/pricing.

A little more clarity

Frequently asked questions

The details, before you hit send.

What counts as an email sent?

Each campaign email sent from a connected mailbox counts toward your monthly limit. Follow-ups count as individual emails, too.

Is CheckMX really free?

Yes. CheckMX is free during beta. Starter is $0 for now and will be $37/mo later. Growth and Scale are coming soon; join the waitlist and we’ll email you when they open. No card is needed.

What's a connected mailbox?

It’s an email account you connect to CheckMX to send campaigns, such as Gmail, Outlook, or an SMTP mailbox. Bring your own accounts; Starter includes 25 connections, and Growth and Scale include unlimited connections.

Are email checks included?

Yes. Every plan, including the free Sandbox, comes with email checks at no extra cost.

Can I switch plans?

Yes. Everyone is on Starter, free during beta. Growth and Scale are coming soon, and we’ll email the waitlist when they open.