Divide the emails you want to send a day by the daily limit for each mailbox, and round up. Put in your own target, mailboxes and sending hours to see the pace for each mailbox and, for new ones, the warm-up week by week. Free, no signup, nothing leaves your browser.
Your numbers
Example numbers. Replace them with yours.
What the target needs
5 mailboxes
2 more than you have, at 40 a day each.
200 a day, sent 09:00 to 17:00 (8 hours), 5 days a week, is about 22 sending days a month.
The warm-up ramp, week by week
New mailboxes start low and climb. Every mailbox in use ramps together.
| Week | Per mailbox a day | All mailboxes a day | Sent that week |
|---|---|---|---|
| 1 | 5 → 12 | 60 | 195 |
| 2 | 25 | 125 | 625 |
| 3 | 40 | 200 | 1,000 |
The target is reached on day 15 of the ramp. Bounces or spam complaints are a reason to hold a step longer.
Keep the pace without watching it.
Monty sends from your own mailboxes, during your recipient's working hours, and never over the daily limit you set for each one.
Start with your listHow it is worked out
A worked example. These are example numbers, not industry figures. A team wants 200 cold emails a day, has 3 mailboxes and sets a limit of 40 a day each. That needs 5 mailboxes, so 2 more. Each sends 40 a day. Sending 09:00 to 17:00 in the recipient's time zone, that is 5 an hour, or one every 12 minutes. At 5 days a week it comes to about 4,400 a month. If the mailboxes are new, they reach the target on day 15 of the ramp, in week 3.
Ramp days count calendar days from the first send, and each week sends on its first days (Monday to Friday for five). The ramp is a starting point. Hold a step for longer if you see bounces or spam complaints.
Divide the cold emails you want to send a day by the daily limit you set for each mailbox, and round up. With an example target of 200 a day and a limit of 40 a mailbox, that is 5 mailboxes. Count new emails and follow-ups together, because both leave the same mailbox.
There is no single safe number. It depends on the mailbox's age, its history and how recipients respond. This planner starts at 40 a day as a conservative example, and flags anything above 50. Change it to the limit you trust. Your email provider's own sending cap is far higher and is not a target for cold email.
New mailboxes need a warm-up period. The ramp this planner uses is 5 a day on days 1–3, 12 a day on days 4–7, 25 a day on days 8–14, 40 a day on days 15–21, then your own daily limit from day 22. If you see bounces or spam complaints, hold a step for longer. Some teams ramp more slowly than this.
A mailbox that sends its whole day in a burst looks like a machine. Spreading sends across the recipient's working hours keeps a steady pace, and the email arrives when they are at their desk. The planner shows the gap between sends for each mailbox.
No. The planner runs in your browser and sends nothing to a server. Once you change a number, the inputs go into the page address so you can share the plan; nothing else keeps them.
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The price
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