How pay-per-send pricing works

Boostmail charges for the emails you send, never for the contacts you keep. The first 20,000 emails every 30 days are free, and above that you pay per 1,000 emails sent. There is no charge per contact, so there is no reason to prune your list to save money: keep every subscriber and pay only for what you send.

The free allowance

Every 30-day billing period starts with 20,000 free emails. If you send 20,000 emails or fewer in that period, you stay on the Free plan and pay $0. No credit card is needed to install Boostmail and start sending.

What you pay above 20,000 emails

Once you send more than 20,000 emails in a billing period, you pay per 1,000 emails sent, and the rate drops as volume grows:

• $0.50 per 1,000 emails up to 300,000 emails
• $0.35 per 1,000 emails from 300,000 to 800,000 emails
• $0.30 per 1,000 emails above 800,000 emails

The 20,000 free emails come off the first band, so you only pay for emails beyond them.

Plans and base fees

Your plan follows your send volume, and each paid plan has a base fee per 30-day period:

• Free, $0, up to 20,000 emails
• Growth, $5 base fee, up to 300,000 emails
• Professional, $35 base fee, from 300,000 to 800,000 emails
• Enterprise, $35 base fee, from 800,000 up to 1,500,000 emails by default

You don’t need to guess a tier in advance. The plan that matches the number of emails you send is the one that applies.

Enterprise sends up to 1,500,000 emails per 30-day billing period by default. Sending pauses when you reach the limit until the next period starts. If you need more, contact support@boostmail.app and we will raise your limit.

Worked examples

Total cost per 30 days, by number of emails sent:

• 20,000 emails: $0 (all within the free allowance)
• 40,000 emails: $15 ($5 base fee + 20,000 paid emails at $0.50 per 1,000)
• 100,000 emails: $45
• 200,000 emails: $95
• 300,000 emails: $175
• 400,000 emails: $210
• 800,000 emails: $350
• 1,000,000 emails: $410

It can help to think in terms of your list. If every contact gets 4 emails in a 30-day period:

• 1,000 contacts (4,000 emails): $0
• 5,000 contacts (20,000 emails): $0
• 10,000 contacts (40,000 emails): $15
• 25,000 contacts (100,000 emails): $45
• 50,000 contacts (200,000 emails): $95
• 100,000 contacts (400,000 emails): $210

Send more often and the cost follows the emails, not the list. For example, 10,000 contacts receiving 8 emails each (80,000 emails) costs $35.

Why no charge per contact matters

With contact-based pricing, a larger list costs more every month, even when many of those contacts are quiet. That pushes stores to delete subscribers just to stay on a cheaper tier. With Boostmail, a contact who isn’t emailed costs nothing. You can still choose to send to your most engaged segments for better deliverability, but that is a sending decision, not a billing one.

Compare the math for your store

If you’re weighing Boostmail against another platform, the Klaviyo vs Boostmail cost calculator lets you plug in your list size and how often you email it. See the pricing page for the full plan details. For questions about your specific bill, email support@boostmail.app.