Bulk email verifier: check your whole email list at once
Upload a CSV or Excel file and this bulk email verifier checks every address on it. Each row gets a valid or invalid result, including catch-all addresses.
- 1,000 free credits
- No card needed
- Credits never expire
- addresses per file
- 50,000addresses per file
- accuracy on business lists
- 98.5%accuracy on business lists
- per address, catch-all included
- 1 creditper address, catch-all included
- bounce rate after verification, usually
- <3%bounce rate after verification, usually
Giggal.ai is rated a Leader on SourceForge and Slashdot
What is bulk email verification?
Bulk email verification checks a whole list of email addresses at once and tells you which ones can receive mail. A bulk email verifier looks up each domain's mail servers and asks whether each mailbox exists, without sending an email. You remove the addresses that would bounce before you send, which protects your sender reputation and your deliverability.
How bulk email verification works
Three steps, and no email is sent to anyone on your list. Most lists come back in minutes.
- 1
Upload your list
Add a CSV or Excel file with up to 50,000 email addresses. For a bigger list, split it into a few files.
- 2
Every address is checked
The bulk email checker looks up each domain’s mail servers and asks whether the mailbox exists. It also flags disposable, role-based, duplicate and catch-all addresses.
- 3
Download the results
You get a CSV with a result on every row. Keep the valid addresses, remove the invalid ones and retry the unknown ones later.
What the bulk email checker returns for each address
Every row ends in one of three results.
Valid
The mailbox exists, so mail sent to it should arrive. Keep these addresses.
Invalid
The format is broken, the domain has no mail server, or the mailbox does not exist. Mail sent here will bounce. Remove these.
Unknown
The mail server did not give a clear answer, often because of greylisting. Retry these later. Credits for unknown results are refunded.
Each row also shows these flags, so you can decide what to keep:
Catch-all, resolved to valid or invalid instead of left as risky
Disposable, a temporary inbox that will stop working
Role-based, such as info@ or sales@, a shared inbox and not a person
Duplicate, the same address more than once in your file
Catch-all addresses get a real result
Some company mail servers accept every address, real or made up. That is a catch-all domain. A normal check gets a yes for every address on it, so it cannot tell a real mailbox from a typo.
Many bulk email validators stop there and mark every catch-all address as "risky". On B2B lists, that can be a large share of your contacts, and many of them are real people. You are left to guess which ones to send to.
Giggal.ai checks each catch-all address and returns valid or invalid, for the same 1 credit as any other address. It also works on domains behind security gateways like Proofpoint and Mimecast, where other tools often return unknown.
Free bulk email verifier: start with 1,000 credits
Every new account gets 1,000 free credits, with no card needed. That verifies a list of up to 1,000 addresses for free. After that, this bulk email verification service is pay as you go. You buy credits once, there is no monthly plan, and credits never expire.
| Credits (addresses) | Price | Per 1,000 addresses |
|---|---|---|
| 1,000 | Free | New accounts, no card |
| 3,000 | $5 | $1.67 |
| 10,000 | $9.90 | $0.99 |
| 30,000 | $28 | $0.93 |
| 50,000 | $39 | $0.78 |
| 100,000 | $76 | $0.76 |
| 300,000 | $222 | $0.74 |
| 500,000 | $360 | $0.72 |
| 800,000 | $559 | $0.70 |
| 1,000,000 | $680 | $0.68 |
One credit verifies one address, catch-all checks included. See the full pricing.
When to use a bulk email verifier
Verify a list whenever you are about to send to many addresses at once. Removing dead addresses first keeps your deliverability high.
Before a cold email campaign, so bounces do not hurt your deliverability.
After you collect leads from a form, an event or a lead database.
Before you email an old newsletter list that has not been used in months.
Before you import contacts into your CRM or email tool.
Bulk email verifier software for your own tools
Uploading a file is one way. You can also run mass email verification from your own app or workflow.
Email list verification or email list cleaning?
Email list verification gives every address a result. Cleaning is what you do with those results: you remove the invalid, disposable and duplicate addresses and keep a clean file. Both start with the same upload. Read more about email list cleaning.
Need to check only one address?
Use the free email checker. It verifies one address at a time with the same checks, with no signup needed.
Bulk email verifier FAQ
A bulk email verifier checks a whole list of email addresses in one go, instead of one address at a time. You upload a file, and every address gets a result: valid, invalid or unknown. It is also called a bulk email checker or bulk email validator.
Up to 50,000 addresses per file. If your list is bigger, split it into several files and upload each one.
Yes. Every new account gets 1,000 free credits with no card needed. One credit verifies one address, so you can verify a list of up to 1,000 addresses for free.
Yes. Your first 1,000 addresses are free, with no card needed. The free credits never expire, so you can use them whenever you want. You only pay if you need to verify more than 1,000 addresses.
Most lists come back in minutes.
CSV or Excel. You download the results as a CSV, with a result on every row.
No. It asks each mail server whether the mailbox exists and stops before any message is sent. Nobody on your list receives anything.
One credit per address, with catch-all checks included. 10,000 addresses cost $9.90 and 100,000 cost $76. You pay once, with no monthly plan, and credits never expire.
Each one is checked and returned as valid or invalid, for the same 1 credit as any other address. Many bulk email validators mark them all as "risky" instead.
Unknown means the mail server did not give a clear answer, often because it delays new senders on purpose (greylisting). Try those addresses again later. Credits for unknown results are refunded.
Yes. Validation, verification and checking are three words for the same job: finding out which addresses on a list can receive mail.
Giggal.ai measures 98.5% accuracy on business lists. Lists verified with it usually bounce under 3%.
Giggal.ai is run by TargetPulse Ltd and handles personal data under the GDPR. The privacy policy at giggal.ai/privacy-policy explains what is collected, how it is used and how long it is kept.
Verify your email list in minutes
1,000 free credits, no card needed. CSV or Excel, up to 50,000 addresses per file.