How billing works
You only pay for emails that were actually sent. There’s no plan to buy and no monthly fee.
Prices
| Emails in a calendar month | Price per 1,000 emails |
|---|---|
| First 100,000 | $3.00 |
| 100,001 to 1,000,000 | $1.50 |
| Over 1,000,000 | $1.00 |
For example, if you send 150,000 emails in a month, you pay $3.00 per 1,000 for the first 100,000 and $1.50 per 1,000 for the other 50,000. Your count starts again on the 1st of each month (UTC).
What you pay for
Emails your connected inboxes send, using your sequencer’s own sent count.
What you don’t pay for
- Emails from an inbox while its fix is waiting on us. See what counts.
- Emails sent while you’ve disconnected InboxFlow. This includes the day you disconnect.
- Emails sent before you connected. We import your history so we can see how your inboxes have performed, but we never charge for it.
- Emails we couldn’t count. If we can’t read your sequencer, we keep trying for 30 days. If we never get a count, you’re not charged.
- Emails your sequencer later removes from its count. We refund the difference.
- Emails sent while your account is paused because your balance is below $0.
When a fix counts as "waiting on us"
When one of your inboxes is underperforming and replacing it is waiting on InboxFlow, you don’t pay for that inbox’s emails on any day it spends waiting. It counts as waiting on us when:
- a backup inbox is ready, but we haven’t swapped it in yet;
- the replacement inbox is still warming up;
- your inbox vendor is out of stock;
- the swap hit an error on our side;
- you use automatic swaps, and the swap is waiting on a step of ours.
It doesn’t count when the next step is yours:
- the swap is waiting for your approval, or you chose "not now";
- you need to reconnect your sequencer, connect an inbox vendor, or add a domain contact;
- your monthly budget cap is too low for the replacement;
- you haven’t turned on swaps.
As soon as the next step is yours, normal charging starts again.
How counting works
- Once a day, we take the previous day’s sent count from your sequencer and charge it to your balance.
- We check each day again for 7 days. If the count goes up, we charge the extra. If it goes down, the difference comes back to your balance. After 7 days, the count is final.
- Late emails count toward the month they were sent in, including for your tier price.
Your balance
- Add funds from $50 to $10,000 at a time.
- Auto top-up adds funds when your balance runs low, and gives you 20% extra every time. Adding funds by hand doesn’t include the bonus.
- Money you add never expires.
- Unused balance isn’t refundable, but contact us if something’s gone wrong.
- If your balance goes below $0, everything keeps working for 7 days. After that, monitoring carries on, but swaps pause and we stop showing which inboxes need fixing until you add funds. New funds pay off the negative balance first.
Limits you control
- Auto top-up monthly maximum: the most we’ll charge your card each month to top up your balance.
- Monthly budget cap: the most InboxFlow can spend each month buying inboxes and domains for you. Your email costs don’t count towards it.