Bulk Email Verifier
The Bulk Email Verifier helps you check the deliverability status of a large list of email addresses — saving you time and helping you avoid bounce rates.
Uploading a File
Tomba supports both .CSV and .TXT files with any delimiter.
To ensure smooth processing:
✅ Ensure all emails are in a single column
✅ Use a spreadsheet tool like Microsoft Excel, Google Sheets, or OpenOffice Calc
✅ Save/export the file as a CSV for optimal compatibility
How to Use Bulk Email Verifier
Go to the Bulk section of your account
Click on Email Verifier
Click + New Bulk and enter a name for your task
Upload your file
Wait while Tomba processes your list
Click Download to get the results in
.CSVformat
You can download:
All email addresses
Only valid emails
Email Verification Statuses Explained
Status | Meaning |
✅ Valid | The email address is safe to use |
⚠️ Accept all | The server accepts all emails, but mailbox setup can't be confirmed |
❌ Invalid | The email will bounce — do not use |
❓ Unknown | Verification couldn’t complete (server timeout, block, etc.) |
✉️ Webmail | Address is from a webmail provider (e.g., Gmail, Yahoo); not verified |
🕑 Disposable | Temporary email address; not safe to use |
Managing Your Bulk Tasks
Each uploaded task gives you the ability to:
Sort by task name, status, or creation date
Search for a specific task
Rename the task
Delete it using the dropdown menu
Verify a list of email addresses via Microsoft excel
You can also verify a list of email addresses to get the deliverability status of each email.
Select the Verifier add-in tab.
Select a list of emails in your spreadsheet, and click on
"Verify email addresses"
Verify a list of email addresses via Google Sheets
You can also verify a list of email addresses to get the deliverability status of each email.
Select the Verifier add-on tab.
Select a list of emails in your spreadsheet, and click on
"Verify email addresses"
Understanding Email Verification Results
When you run email verification in Tomba, a new tab will be generated showing:
The email addresses
Their verification statuses
A confidence score column
The number of public sources where the email was found
Optionally, full verification details
Verify Email Addresses via API
Check the validity of any professional email address using Tomba’s powerful and accurate Email Verifier API.
from tomba.client import Client
from tomba.services.verifier import Verifier
# Initialize the Tomba client
client = Client()
client.set_key('ta_xxxx').set_secret('ts_xxxx')
# Initialize the Verifier service
verifier = Verifier(client)
# Verify the email address
result = verifier.email_verifier('[email protected]')
Tomba offers official SDKs for popular programming languages, including:
PHP, Python, C#, Go, Rust, Ruby, Dart, JavaScript, R, Lua, Elixir Visit the full API Docs →
Need Help?
If you have questions or run into any issues, contact our team we’re always happy to help!