InboxFlowOngoing management
Ongoing care for your existing inboxes
Performance monitored
Weak inboxes replaced
Backups replenished
More attention for your clients.
Ongoing care for your inboxes.
FOR AGENCIES RUNNING 200+ INBOXES
Keep your
cold email
running.
Keep client campaigns running with ongoing inbox care handled for you. InboxFlow watches performance, replaces weak senders with ready backups, and replenishes backup capacity through your connected tools.
Trusted by cold-email teams running...
- Smartlead
- Instantly
- PlusVibe
- SendKit
- EmailBison
- InboxKit
Your campaigns keep moving.
We handle the inbox maintenance.
An inbox starts falling behind. Someone has to spot it, find a ready replacement,
and get it into the campaign. That work keeps coming back.
Make inbox care part of the operation.
InboxFlow checks your existing inboxes, manages eligible replacements, and replenishes backup capacity within your agreed settings. Your team owns the campaigns, copy, and client relationships.
- 01
Watch performance
Compare inbox performance within each campaign. Find senders that are falling behind.
- 02
Replace weak senders
Make qualifying replacements when suitable backups are ready.
- 03
Replenish & repeat
Auto-replenish used backup capacity within your budget. New inboxes warm up before use.
Ongoing checks as your inboxes change.
Keep your team focused on clients.
Performance monitored Replacement work managed Backups replenishedReplacement work.
Measured impact.
Customer result
450 inboxes under review
28net-new replies in 30 days
- completed replacements
- 45
- average reply rate
- 2.6x
How this was measured
InboxFlow assessed 450 inboxes, found 89 worthwhile replacement candidates, and measured 45 completed replacements at 2.6x the average reply rate of the replaced inboxes against the counterfactual baseline. The reply-rate comparison applies to replaced inboxes in this operation.
Simple pricing that grows with you.
Keep every campaign running. Pay only for the volume you use.
Price per 1,000 emails each month
You pay for
- Emails your connected inboxes send, counted by your sequencer.
You don’t pay for
- Emails from an inbox while its fix is waiting on us. What counts
- Emails sent while you’ve disconnected InboxFlow.
- Emails we couldn’t count.
- Emails your sequencer later removes from its count. We refund the difference.
It comes out of your balance the day after.
- First 100,000 emails
- $3.00
- 100,001 to 1,000,000 emails
- $1.50
- Above 1,000,000 emails
- $1.00
You only pay for emails that were actually sent.
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. The count starts again each calendar month.
What a month costs
| Emails a month | Monthly total | Effective rate per 1,000 |
|---|---|---|
| 10,000 | $30 | $3.00 |
| 30,000 | $90 | $3.00 |
| 100,000 | $300 | $3.00 |
| 300,000 | $600 | $2.00 |
| 1,000,000 | $1,650 | $1.65 |
| 3,000,000 | $3,650 | $1.22 |
- Your balance is charged once a day for the emails sent.
- Every auto top-up adds a 20% bonus to your balance.
- If a fix is held up on our side, you don't pay for that inbox's emails.
Mailboxes and domains are paid to your provider. Need custom terms? .
What could we
take off your plate?
Walk us through your inboxes, tools, and what your team keeps having to fix. We’ll establish whether InboxFlow fits, what access and backup capacity you need, and what ongoing management would cost.