Quick Start

This guide covers every Hunter.io feature:
- Getting Started — Create your account and connect your inbox
- How to Use Domain Search — Find multiple email addresses on any website address in seconds
- How to Use Email Finder — Get one exact address from a full name and a company name
- How to Use Email Verifier — Verify email addresses so nothing bounces and your domain stays clean
- How to Use Campaigns — Send cold email campaigns and automatic follow ups from one screen
- How to Use API Key — Pipe email data into your own software with a single key
- How to Use Google Sheets Add-on — Run searches inside Google Sheets without copy and paste
- How to Use Browser Extension — Find email addresses on any website while you browse
- How to Use AI Writing Assistant — Draft cold email copy and subject lines in a few clicks
- How to Use Bulk Tasks — Process an entire email list in one upload
Time needed: 5 minutes per feature
Also in this guide: Pro Tips | Common Mistakes | Troubleshooting | Pricing | Alternatives
Why Trust This Guide
I’ve used Hunter.io for two years across agency work and my own cold outreach.
Every screen below comes from real hands-on testing, not vendor marketing.

Hunter.io is one of the most trusted email finder tools on the web.
Most users run one domain search and never touch the other nine features.
Finding addresses is only half the job — the other half is making sure your emails reach a real inbox.
This guide shows you how to use Hunter io from first login to a full email outreach sequence.
Step by step, with screenshots and pro tips.
Hunter.io Tutorial
This How to Use Hunter IO tutorial walks through every feature in order, from account setup to bulk domain search and campaigns.

Hunter.io
Find and verify professional email addresses in seconds. Hunter.io gives you domain search, an email verifier, and campaigns in one account. Start free — no card required.
Getting Started with Hunter.io
Before any feature works, finish this one-time setup.
It takes about three minutes.
Here’s what the tool looks like in real use:
Now let’s walk through each step.
Step 1: Create Your Account
Visit hunter.io and click Sign Up.
Enter your work email and create a password.
The free plan starts immediately, so you can test searches before paying anything.
✓ Checkpoint: Check your inbox for the confirmation message.
Step 2: Open the Dashboard
Hunter.io runs in the browser, so there is no app to download.
Log in and the dashboard opens on Domain Search by default.
Here’s what this looks like:

✓ Checkpoint: You should see your remaining monthly credits in the top corner.
Step 3: Connect Your Email Account
Open Settings and connect your Gmail or Outlook account.
This unlocks campaigns and lets you reply to prospects from the same screen.
Write down your ideal customer profile before you search. It keeps your lead list focused.
✅ Done: You’re ready to use any feature below.
How to Use Hunter.io Domain Search
Domain Search pulls every work address Hunter.io has found on one email domain.
Here’s how to use it step by step.
Step 1: Open Domain Search
Log into your account and click Domain Search in the top menu.
Type the website address of the company you want, such as stripe.com.
Step 2: Read the results
Hunter.io returns multiple email addresses with job titles and a confidence score.
It skips personal emails and shows only work contacts tied to that domain.
Here’s what this looks like:

✓ Checkpoint: You should see a contact list plus the company’s email format at the top.
Step 3: Save the contacts
Tick the people you want and save them straight to a lead list.
✅ Result: You have a clean list of prospects for one company in under a minute.
💡 Pro Tip: Filter by department before you export. It cuts a 200-row list down to the right person fast.
How to Use Hunter.io Email Finder
Email Finder returns one verified address when you already know the person and the company.
Here’s how to use it step by step.
Step 1: Enter the name and company
Open Email Finder and type the person’s full name plus the company name.
Both fields are required. A first name alone will not return a match.
Step 2: Run the search
Click Find Email. Hunter.io checks public sources and applies the known email format.
You get one address rather than a long list to sort through.
Here’s what this looks like:

✓ Checkpoint: You should see one address with a confidence score next to it.
Step 3: Save or copy the address
Save the contact to your leads, or copy it into other tools you already use.
✅ Result: You found the right person’s work address without guessing at the spelling.
💡 Pro Tip: A low confidence score usually means a nickname. Try the spelling from their LinkedIn profile instead.
How to Use Hunter.io Email Verifier
Email Verifier checks whether an address is live before you waste a send on it.
Here’s how to use it step by step.
Step 1: Paste the address
Open Email Verifier and paste any address you want to check.
Step 2: Read the verdict
Hunter.io pings the mail server to determine whether the mailbox accepts messages.
Each result comes back labelled valid, risky, or invalid.
It will also identify catch-all servers that accept anything you send them.
Here’s what this looks like:

✓ Checkpoint: You should see a status label and a confidence score for that address.
Step 3: Clean your email list
Delete every invalid row before you upload the file to your sending app.
✅ Result: Your bounce rate stays low, which helps protect your sender reputation.
💡 Pro Tip: Re-verify your saved leads every two months. Professional data changes fast and dead rows creep back in.
How to Use Hunter.io Campaigns
Campaigns sends personalized emails at scale and handles every follow up for you.
Here’s how to use it step by step.
Step 1: Connect your inbox
Connect your Gmail or Outlook account so Hunter.io can send on your behalf.
Sending from your own mailbox keeps your email outreach campaigns personal.
Step 2: Build the sequence
Write your first message, then add two follow up emails spaced a few days apart.
Use merge fields to personalize the greeting and the opening line for each contact.
Here’s what this looks like:

✓ Checkpoint: You should see your sequence listed with each step and its delay.
Step 3: Launch and track
Pick your recipients, hit start, then track opens, clicks, and replies as they land.
✅ Result: Your cold email campaigns run on schedule while you focus on the replies.
💡 Pro Tip: Research shows a single follow up can lift response rates by as much as 22%. Never send just one message.
How to Use Hunter.io API Key
API Key connects Hunter.io data to your own app, CRM, or internal software.
Here’s how to use it step by step.
Step 1: Copy your key
Open your account settings and click the API tab, then copy the key.
Step 2: Make a test call
Paste the key into your app and run one domain search request.
The response comes back as JSON, ready to map into your database.
Here’s what this looks like:

✓ Checkpoint: You should get a JSON response listing email addresses and confidence scores.
Step 3: Watch your credits
Every call spends credits from your plan, so cache results to save time and budget.
✅ Result: Your own software can find emails automatically with no manual searching.
💡 Pro Tip: Never post an API key in public code or a shared repo. Store it as an environment variable.
How to Use Hunter.io Google Sheets Add-on
Google Sheets Add-on brings domain search and verification straight into a Google Sheets tab.
Here’s how to use it step by step.
Step 1: Install the add-on
In Google Sheets, open Extensions, search the marketplace for Hunter, and install it.
Step 2: Authorize your account
Sign in and grant access so the add-on can read your remaining credits.
This is a one-time step per Google account.
Here’s what this looks like:

✓ Checkpoint: You should see a Hunter menu sitting under Extensions.
Step 3: Run a search on a column
Highlight a column of domains and pick Domain Search from the Hunter menu.
✅ Result: Your spreadsheet fills with email addresses without a single copy and paste.
💡 Pro Tip: Add a verification column beside the results. It flags invalid rows before anything reaches your sending app.
How to Use Hunter.io Browser Extension
Browser Extension finds emails while you browse a company website or a LinkedIn profile.
Here’s how to use it step by step.
Step 1: Install from the web store
Add the Chrome extension, then sign in with your existing account.
Step 2: Visit a company website
Click the Hunter icon in your toolbar while you visit any company page.
The popup lists contacts for that email domain without leaving the page.
Here’s what this looks like:

✓ Checkpoint: You should see contacts for that domain inside the popup.
Step 3: Save anyone useful
Hit save and the contact drops into your leads automatically.
✅ Result: You can find email addresses without breaking your reading flow.
💡 Pro Tip: It works from a LinkedIn post too. Open the poster’s profile, then click the icon in your toolbar.
How to Use Hunter.io AI Writing Assistant
AI Writing Assistant drafts cold email copy, subject lines, and follow ups from a short brief.
Here’s how to use it step by step.
Step 1: Describe your offer
Tell it who you sell to and the pain point you fix.
Good input beats clever prompts here.
Step 2: Generate the draft
It writes subject lines and body copy aimed at your target audience’s interests.
Every draft ends with a clear call-to-action.
Here’s what this looks like:

✓ Checkpoint: You should see a full draft with a subject line and a closing ask.
Step 3: Edit before sending
Rewrite one line per prospect so the message still reads like personal emails.
✅ Result: You have personalized emails ready in minutes instead of an hour.
💡 Pro Tip: Personalized emails can raise open rates by up to 26% and click-throughs by 14%. That edit is worth the minute.
How to Use Hunter.io Bulk Tasks
Bulk Tasks runs bulk domain search and list verification across thousands of rows.
Here’s how to use it step by step.
Step 1: Upload your CSV
Open Bulk Tasks and upload a CSV file of domains or addresses.
Step 2: Pick the task type
Choose bulk domain search, Email Finder, or verification.
The bulk verifier handles up to 5,000 email addresses in a single run.
Here’s what this looks like:

✓ Checkpoint: You should see your job in the queue with a progress bar.
Step 3: Download the results
Export the finished file and import it into your sales tools.
✅ Result: You built an email list for an entire company set in one process.
💡 Pro Tip: Split uploads into 1,000-row batches. A failed job is much cheaper to rerun that way.
Hunter.io Pro Tips and Shortcuts
After two years of daily use, these are the habits that save time.
The Google Sheets add-on was the real game changer for my weekly list building.
Here’s a snapshot of what the tool does best:

Keyboard Shortcuts
| Action | Shortcut |
|---|---|
| Open the browser extension popup | Alt + Shift + H (set in Chrome) |
| Copy a highlighted address | Ctrl + C / Cmd + C |
| Start a fresh domain search tab | Ctrl + T, then type hunter.io |
| Reload results after a failed search | Ctrl + R / Cmd + R |
Hidden Features Most People Miss
- Follow a company: Click Follow on any domain and Hunter.io alerts you when new email addresses appear.
- Email format detection: The format line at the top of a domain search tells you how to guess any missing name.
- Saved lead lists: Group leads by campaign so you never contact the same person from two sequences.
Hunter.io Common Mistakes to Avoid
Mistake #1: Sending to unverified addresses
❌ Wrong: Exporting a domain search and mailing every row the same day.
✅ Right: Run the email verifier first. Dead addresses hurt your sender reputation and push future messages to the spam folder.
Mistake #2: Blasting one generic message
❌ Wrong: Sending the same template to 500 recipients with no personalization.
✅ Right: Personalize the first line for each person. It is the single biggest driver of reply rates in cold email.
Mistake #3: Skipping the follow up
❌ Wrong: Sending one email and assuming silence means no.
✅ Right: Schedule two follow ups in campaigns. Most replies arrive after the second touch, not the first.
Hunter.io Troubleshooting
Problem: Domain search returns no results
Cause: The company is small, or you entered a redirect rather than the real email domain.
Fix: Check the domain in your browser first, then search the root address without www.
Problem: Emails land in the spam folder
Cause: A cold domain, no authentication, or too many invalid addresses in one send.
Fix: Set up SPF and DKIM, warm the inbox for two weeks, and verify every list to improve deliverability.
Follow those basic practices and most messages get delivered on the first attempt.
Problem: Credits disappear faster than expected
Cause: Bulk tasks and API calls both draw from the same monthly pool.
Fix: Cache results in Google Sheets and re-run searches monthly, not weekly.
📌 Note: If none of these fix your issue, contact Hunter.io support.
What is Hunter.io?
Hunter.io is an email finder that helps you find email addresses for the right person at any company.
Think of it like a phone book for work inboxes, built from publicly available pages across the web.
It is a powerful tool for anyone sending emails to people they have never met before.
Watch this quick overview:
It includes these key features:
- Domain Search: Enter a company website and get every public work address on that email domain
- Email Finder: Give it a full name and a company and it returns the single matching address
- Email Verifier: Checks any address to determine if the mailbox exists and how safe it is to contact
- Campaigns: Send personalized emails, schedule follow ups, and track every response in one place
- API Key: Push domain search and verification into your own app with a simple REST key
- Google Sheets Add-on: Run searches and verification inside a spreadsheet instead of the web app
- Browser Extension: A Chrome extension that surfaces contacts on any company website you visit
- AI Writing Assistant: Drafts subject lines and body copy for outreach built around your offer
- Bulk Tasks: Upload a CSV file and process thousands of domains or addresses in one job
For a full review, see our Hunter.io review.

Hunter.io Pricing
Here’s what Hunter.io costs in 2026:
| Plan | Price | Best For |
|---|---|---|
| Free | $0/month | Testing the tool and small manual searches |
| Starter | $34/month | Solo founders running their first cold email campaigns |
| Growth | $104/month | Small sales teams sending steady email outreach |
| Business | $209/month | Agencies running bulk domain search at volume |
| Enterprise | Custom | Large teams needing API limits and support |
Free trial: Yes — the free plan runs with no time limit and no card.
Money-back guarantee: No formal guarantee, but you can downgrade at any time.

💰 Best Value: Starter — enough monthly credits for steady cold outreach at a fair price.
Hunter.io vs Alternatives
How does Hunter.io compare? Here’s the competitive landscape:
| Tool | Best For | Price | Rating |
|---|---|---|---|
| Hunter.io | Finding and verifying addresses | $34/mo | ⭐ 4.5 |
| Instantly | High-volume sending | $37/mo | ⭐ 4.6 |
| Snov | Search plus sending in one | $39/mo | ⭐ 4.4 |
| Apollo | Contact database with phones | $49/mo | ⭐ 4.5 |
| Reply IO | Multichannel sequences | $59/mo | ⭐ 4.4 |
| UpLead | Verified B2B data | $99/mo | ⭐ 4.5 |
| Lemlist | Personalized creative outreach | $69/mo | ⭐ 4.3 |
| Mailshake | Simple sales sequences | $58/mo | ⭐ 4.2 |
Quick picks:
- Best overall: Hunter.io — the most accurate email finder with verification built in
- Best budget: Snov — cheaper credits if you also want sending
- Best for beginners: Mailshake — the simplest campaign builder here
- Best for sales teams: Apollo — one database for emails, phones, and CRM sync
🎯 Hunter.io Alternatives
Looking for Hunter.io alternatives? Here are the top options:
- 🚀 Instantly: Built for volume. Unlimited inboxes and warmup make it the pick when you send thousands of cold emails a month.
- 💰 Snov: Cheap credits, plus finder, verifier, and drip campaigns bundled together for small teams.
- 🏢 Apollo: A huge contact database with phone numbers and CRM sync, not just email data.
- ⚡ Reply IO: Adds LinkedIn steps and calls to your sequences for true multichannel outreach.
- 🔒 UpLead: Verified B2B records with an accuracy guarantee, better for enterprise data teams.
- 👶 Mailshake: The easiest way in for beginners running their first campaigns.
- 🎨 Lemlist: Custom images and video make each message feel handmade.
- 🎯 Woodpecker: Agency friendly with strong reply detection and client separation.
- 🔥 Smartlead: Rotates many sending accounts to protect deliverability at scale.
- 📊 Saleshandy: Clear tracking and reporting on every step of a sequence.
- 💼 Klenty: Deep CRM integrations for sales teams already in HubSpot or Salesforce.
- 🧠 Warmbox: Warms a new domain automatically so early messages avoid the spam folder.
- 🔧 Maildoso: Sets up sending infrastructure and mailboxes for you.
- ⭐ Manyreach: Pay-per-use pricing with no seat fees, handy for occasional campaigns.
- 🌟 Warmy: Automated inbox warmup with clear deliverability scoring.
For the full list, see our Hunter.io alternatives guide.
⚔️ Hunter.io Compared
Here’s how Hunter.io stacks up against each competitor:
- Hunter.io vs Instantly: Instantly sends better at scale. Hunter.io finds and verifies better. Many teams pay for both.
- Hunter.io vs Snov: Snov bundles more for less. Hunter.io wins on data accuracy and confidence scoring.
- Hunter.io vs Apollo: Apollo has phone numbers and a bigger database. Hunter.io returns cleaner email results.
- Hunter.io vs Reply IO: Reply IO is the stronger sequencer. Hunter.io is the stronger finder and verifier.
- Hunter.io vs UpLead: UpLead sells verified records outright. Hunter.io searches live pages for a lower price.
- Hunter.io vs Mailshake: Mailshake is simpler to run. Hunter.io gives you the contacts Mailshake cannot find.
- Hunter.io vs Lemlist: Lemlist wins on creative personalization. Hunter.io wins on address quality.
- Hunter.io vs Woodpecker: Woodpecker suits agencies managing many clients. Hunter.io suits list building.
- Hunter.io vs Smartlead: Smartlead handles inbox rotation. Hunter.io handles the data that goes into it.
- Hunter.io vs Saleshandy: Saleshandy reports in more detail. Hunter.io has the better email finder.
- Hunter.io vs Klenty: Klenty plugs deeper into CRMs. Hunter.io is faster for quick lookups.
- Hunter.io vs Warmbox: Warmbox only warms inboxes. Hunter.io does not warm, so they pair well.
- Hunter.io vs Maildoso: Maildoso builds infrastructure. Hunter.io fills it with verified contacts.
- Hunter.io vs Manyreach: Manyreach charges per use for sending. Hunter.io charges per search credit.
- Hunter.io vs Warmy: Warmy scores deliverability. Hunter.io keeps your list clean so that score stays high.
Start Using Hunter.io Now
You learned how to use every major Hunter.io feature:
- ✅ Domain Search
- ✅ Email Finder
- ✅ Email Verifier
- ✅ Campaigns
- ✅ API Key
- ✅ Google Sheets Add-on
- ✅ Browser Extension
- ✅ AI Writing Assistant
- ✅ Bulk Tasks
Next step: Pick one feature and try it now.
Most people start with Domain Search.
It takes less than five minutes.
Frequently Asked Questions
How to use Hunter.io email finder?
Open Email Finder, type the person’s full name and their company, then click Find Email. Hunter.io returns one address with a confidence score you can save as a lead.
Can I use Hunter.io for free?
Yes. The free plan gives you a set number of monthly searches and verifications with no card required. It is the easiest way to test the tool before paying.
How does Hunter.io work?
It indexes work addresses published across the web, then matches them to a domain or a name. Every result carries a confidence score showing how likely the address is correct.
Is Hunter.io a legitimate service?
Yes. Hunter.io is a well established email finder used by sales and recruiting teams, and it only gathers addresses from publicly available sources.
Does Hunter.io actually work?
In my testing, high confidence results land reliably. Accuracy drops on tiny companies with no public footprint, so verify anything scored below 90% before sending.













