1. Set your reply target
Enter how many replies you want. The calculator works backward from your goal to tell you what’s required.
Trusted by 6 million+ people for email outreach
The average outreach email gets a 4.5% reply rate. Plan the leads, emails, and accounts your campaign needs before you send a single message.
Free · No signup · Based on 31M emails analyzed
Most campaigns fail because senders guess their numbers. 61% of decision makers say outreach emails miss the mark due to irrelevance. Planning your volume, accounts, and sequence length before you send changes the outcome.
Calculate your outreach planLeads = Target Replies / (Reply Rate / 100)
Total Emails = Leads × Emails per Sequence
Email Accounts = Total Emails / (Days × Daily Send Limit)
Sending Domains = Email Accounts / Max Accounts per Domain
Enter how many replies you want. The calculator works backward from your goal to tell you what’s required.
The default is 4.5%. Adjust it to match your audience and see how a higher rate shrinks your lead requirement.
See exactly how many contacts your campaign needs. No guessing, no wasted budget.
Stay out of spam folders by sending from the right number of accounts and domains.
Sequences with 21–50 recipients outperform 500+ by 158%. The difference between a campaign that works and one that doesn’t is planning. This email outreach calculator gives you the numbers before you hit send.
Every default comes from 31M outreach emails analyzed. Know how many leads and accounts you need before you spend a dollar.
Custom domains get 108% higher reply rates than freemail. See exactly how many accounts and domains you need so your emails land in the inbox, not the spam folder.
A 1% reply rate bump can cut your lead list in half. See the impact of every change before you commit.
Stop buying more leads than you need, or fewer than required.
Go from “how many emails do I send?” to a clear plan in 30 seconds.
See how small changes — fewer recipients, more follow-ups, custom domains — compound into better campaign results.
Sign up for free to find leads, verify email addresses, and send outreach sequences with Hunter.
Start for free
The calculator gives you the numbers. Hunter gives you the tools to act on them.
Search Hunter’s database of professionals to build your lead list based on industry, company size, and job title.
Find leadsSend your campaign with automated follow-ups that double your reply rate, all from your own email account.
Send sequencesGo from a blank screen to a reply-ready draft in seconds. Edit the AI’s output and send.
Write with AIFind the right people to send those emails to. Build targeted lead lists by company size, industry, and role.
Find target companiesFind any professional’s email address by name and company domain.
Find leadsCheck if an email address is valid before sending to protect your sender reputation.
Verify email addressesBrowse Hunter’s complete library of free lead generation and outreach tools.
View all toolsHow to write, send, and follow up on outreach emails that actually get replies.
Read the guideBenchmarks from 31M emails. See how your campaigns compare.
View benchmarksEverything about planning your email outreach campaign.
More than 6,000,000 professionals use Hunter to build more connections and grow their business.
