The Bulk Domain Search lets you upload a list of domains or company names and download the email addresses Hunter finds for each one.
In this article, you'll learn how to:
How to upload a list of domains or companies
You can upload your list as a file (CSV, Excel, Numbers or TXT) or paste it directly into Hunter.
Go to the Bulk section of your account.
Click "Domain Search".
Click "+ New bulk" in the top right.
Enter a name for your bulk.
Select "Company names" or "Domain names", depending on what your list contains.
👉 For company names, remove extra characters such as LLC, Ltd, brackets, and slashes. For example, use "Company", not "Company Ltd". See accepted formats for bulk domains.
Paste your list into the text box, or import a file from your computer.
Select the column that contains your domains or company names (file uploads only).
Scroll down to set your filters.
💡 Closing the window, going back, or clicking outside it discards your entries.
How to apply filters and options
In the "Filters and options" section, you can:
Set a maximum number of emails per domain or company name, from 1 to 5,000.
Verify the email addresses. This option is only available when the maximum is 10 emails per domain or fewer.
Include the email sources. The URLs where each email can still be found are added as extra columns.
Include your original file columns, so your data is kept alongside the results we found (CSV uploads only).
Choose personal emails (such as john@company.com), generic emails (such as info@company.com), or both.
Select departments and a filter strength:
"Only" applies the filter strictly. No emails are returned if none match.
"In priority" returns matching emails first, then others if there aren't enough matches.
Available departments: Executive, IT / Engineering, Finance, Management, Sales, Legal, Support, Human Resources, Marketing, Writing & Communication, Education, Arts & Design, Medical & Health, Operations & Logistics.
Require fields such as "Full name", "Position" or "Phone numbers".
Select "Decision-makers only" to return only senior contacts, such as CEOs, VPs, and Directors. Learn more in How can I find decision makers using Hunter?
When you're ready, click "Upload" at the bottom of the window to run your bulk.
How to download your results
Without verification
When your bulk status is "Ready", open it and click "Download". You can also import the results straight into Leads.
With verification
If you verified the emails, you can download:
Valid emails only
All emails, including those that couldn't be verified
Domains where no emails were found
Hunter shows how many emails were found and how many credits you need before you download.
💡 Verification and email credits are charged separately. Verification (0.5 credits per email) is charged when you launch the bulk. Email credits are charged when you download the list.
How to import the results as leads
You can import your results as Leads and save them to a list so you can contact them later with Sequences. After your bulk is processed, click "Import" and follow the steps.
How to read your result file
Results download as a CSV file that opens in Excel, Google Sheets or Numbers. Each row includes:
Email address
Domain name
Organization
Confidence score: the estimated deliverability of the email, as a percentage
Type: "personal" if linked to a person, "generic" otherwise
Number of sources: how many public web pages mention the email
Pattern: the most common email format for the domain
When available, the file also includes first name, last name, department, raw position (the job title as found online), position (the standardized job title, for example "Marketing Ninja" becomes "Marketing Manager"), Twitter handle, LinkedIn URL, phone number, your original input, company headquarters (split into country, state, city, postal code and street), company type and industry.
How to browse your bulks
The Bulk Domain Search section lists all your bulks. Each one has a status:
"Pending": still processing
"Ready": ready to download
"Downloaded": already paid for and downloaded or imported. You can export it again at no extra cost while the file is retained.
From this page, you can also:
Filter bulks by team member. See how to filter bulks by team member.
Sort bulks by "Bulk", "Status" or "Created".
Search for a bulk in the top right.
Open archived bulks from the "Archived" tab.
How to manage a bulk
Click the arrow beside a bulk's name to:
Rename it.
Delete it, if it hasn't been downloaded yet ("Pending", "Ready" or "No result" status).
Archive or unarchive it, if it's been downloaded.
View its history: every download, archive, restore, and rename.
Credits and limits
Bulk Domain Search is available on all plans. On the free plan, you can download up to 10 emails per domain, within your 50 monthly credits.
On a paid plan, if you don't have enough credits, you can buy a credits pack or upgrade your plan.
Credit usage
1 credit for every 1–10 emails returned per domain.
0.5 credits per verified email. For example, verifying 10 emails costs 5 credits.
Verification credits are charged when you launch the bulk. Email credits are charged when you first download it. Later downloads are free.
Filters that narrow your results, such as "Decision-makers only", can lower the credits needed.
For more on credits across Hunter, see How do credits work in Hunter?
Limits
Up to 25,000 domains or company names per bulk.
Files should be under 10 MB to avoid timeouts.
Up to 5,000 emails per domain on a paid plan.
How long we keep your bulk files
Paid results (downloaded or imported as leads) are kept for 15 months, then deleted. We email the team owner at least 30 days before deletion.
Unpaid results are kept for 6 months and deleted without a reminder, so download or import them promptly if you want to keep them.
Why a re-downloaded file may have fewer rows
To comply with data removal laws such as California's Delete Act and AB 883, Hunter rechecks stored Bulk Domain Search files about every two weeks.
It removes any email that's been claimed by its owner or added to a legal do-not-contact list, usually within a month of the claim.
A re-downloaded or re-imported bulk may have fewer rows than the original. That's expected.
Troubleshooting
No results found
A bulk can return no results when:
Hunter has no emails for the domains you entered.
Emails exist, but your filters excluded them. Strict filters like "Decision-makers only" or departments set to "Only" are the most common cause.
To fix it:
Check your list's formatting and data quality.
Loosen your filters and run the bulk again.
Contact our support team if you'd like help spot-checking results.
Low match rates with company names
Company names usually return fewer matches than domains. To improve results:
Upload domain names instead of company names.
If you keep using company names, check they're correct and remove extra characters.
To sum things up
Bulk Domain Search finds emails from a list of companies or domains.
Upload a file (CSV, Excel, Numbers or TXT) or paste your list.
Use domain names for the best results.
Use "Decision-makers only" to return only senior contacts.
Verified bulks can be downloaded as valid, all or not-found emails.
1 credit per 1–10 emails returned per domain, plus 0.5 credits per verified email.
Up to 25,000 domains per bulk, and up to 5,000 emails per domain (10 on the free plan).
Paid results are kept for 15 months, and unpaid results for 6 months.
Have questions? Check our FAQs about finding emails in Hunter.