Email Backlog Capacity Calculator

Estimate capacity from rate, people and available hours for email backlog.

How to use Email Backlog Capacity Calculator

1. Enter Rate Per Person Per Hour, Team Size, Available Hours in the labelled units. 2. Team size is a whole count. Equal rates and independent parallel work are assumed; fractional capacity is a work equivalent, not a count of fully completed items. Keep the completion criterion consistent. The fixed backlog model excludes new arrivals, re-opened messages, setup time and variable complexity. 3. Select Calculate or press Enter to see the result. 4. Select Select Copy result to copy the answer, or Reset to clear the form.

Why use this tool?

Use this tool to estimate capacity from rate, people and available hours for email backlog. Define what counts as cleared: read, triaged, replied to or fully resolved.

How the calculation works

Capacity = rate per person per hour × team size × hours available per person. Team size is a whole count. Equal rates and independent parallel work are assumed; fractional capacity is a work equivalent, not a count of fully completed items. Keep the completion criterion consistent. The fixed backlog model excludes new arrivals, re-opened messages, setup time and variable complexity. Numeric results use up to six decimals, with scientific notation for tiny nonzero values. Fractional averages and capacity are equivalents; allocate whole items and remainders separately when appropriate. Entered decimal arithmetic is applied before display rounding. Numeric inputs/results and durations in seconds are bounded by magnitude 9,007,199,254,740,991.

Example

Email Backlog example: An assumed 30 emails/person/hour × 3 people × 2 hours/person = 180 emails.

Practical tip

Define what counts as cleared: read, triaged, replied to or fully resolved.