Sending Capacity Planner

What it does

Sending capacity is usually estimated from the per inbox daily limit and then quietly broken by follow up steps, which multiply every new contact by the number of steps in the sequence. This skill computes capacity from the sequence shape rather than from the contact count, so the plan survives contact with the second week.

When to use it

• how many emails can I send
• how many inboxes do I need
• how long will this campaign take
• should I buy more domains
• sending capacity

What it needs from you

• accounts: number of sending accounts and the per account daily limit
• sequence: number of steps and the day offsets
• list: total contacts to work through
• days: sending days per week

How it works

1. Compute raw weekly capacity: accounts times daily limit times sending days.
2. Compute the steady state multiplier. Once the sequence is full, every new contact added consumes one slot per step, so effective new contacts per week is raw capacity divided by the number of steps.
3. Compute the ramp: in week one only step one fires, so week one absorbs more new contacts than week four. Show the first four weeks separately rather than averaging them.
4. Divide the list by steady state new contacts per week to get the calendar length, and give the finish date.
5. If the finish date is beyond the point where the list goes stale, say so and give the two options: more accounts, or fewer steps.
6. Price the extra accounts option, including domains and warmup time before they are usable.

What you get back

Weekly capacity, steady state new contacts per week, a four week ramp table, the calendar finish date, and the two options if the date is unacceptable.

The quality bar

• Capacity accounts for follow up steps, not only first touches
• The first four weeks are shown separately from steady state
• Warmup time is included before a new account counts toward capacity
• The finish date is a date

Where it runs

• Claude Code
• Codex CLI
• Cursor
• MCP-compatible agents