Simple, pay-as-you-go pricing

No subscriptions. No monthly minimums. Pay only for what you send.

Pay as you go
$0.002/ email

+ $0.001 per attachment

$1.00 free credit included on signup (500 emails)

Get Started Free

Everything included

  • Unlimited inboxes
  • Unlimited API keys
  • Custom domains with DKIM/SPF/DMARC
  • Inbound email processing
  • Webhook notifications
  • Conversation threading
  • Attachment support (R2 storage)
  • Email open & click tracking

Top-up options

$5

2,500 emails

$10

5,000 emails

$25

12,500 emails

$50

25,000 emails

$100

50,000 emails

Auto-reload available — automatically top up when your balance drops below $1.00.

Frequently asked questions

How much does MailboxKit cost?
$0.002 per email sent or received, plus $0.001 per attachment. No subscriptions or monthly minimums.
Is there a free tier?
Yes. Every new account gets $1.00 in free credit, which covers approximately 500 emails.
Do I need a credit card to start?
No. You can start using MailboxKit immediately with your free credit. No credit card required.
What is included in the price?
Everything: unlimited inboxes, unlimited API keys, custom domains with DKIM/SPF/DMARC, inbound email processing, webhook notifications, conversation threading, attachment support, and email tracking.
How does billing work?
Pay-as-you-go. Top up your balance when needed or enable auto-reload to automatically add funds when your balance drops below $1.00.

Start sending in 30 seconds

$1.00 free credit. No credit card required.

Get Started Free