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How long does it take for a file with 5000 domains to process?

The answer is dependent on numerous factors including domain number of emails, settings and filter & verification

Tomba.io Team avatar
Written by Tomba.io Team
Updated over 2 weeks ago

How Long Does Email Discovery Take?

The time it takes to complete a search in Tomba depends on several factors, including the number of domains, the selected filters, and whether email verification is enabled. In most cases, results are delivered within a few minutes.


Factors That Affect Processing Time:

  • Number of domains

  • Email verification (enabled or not)

  • Selected departments (e.g., Sales, HR)

  • Source inclusion (whether to show email sources)

  • Type of email addresses (personal, generic, or all)

  • Maximum emails per domain


Sample Time Estimates:

Domains

Verification

Departments

Sources

Email Type

Max/Domain

Emails Found

Time

5095

❌ No

❌ No

❌ No

All

10

1200

30 seconds

5095

❌ No

✅ Yes

❌ No

Personal

10

301

58 seconds

5095

❌ No

✅ Yes

✅ Yes

Personal

10

301

1 min 7 sec

5095

✅ Yes

❌ No

❌ No

All

10

1200

25 minutes


Why Verification Takes Longer

When real-time email verification is enabled, each email goes through multiple checks, including:

  • Email format validation

  • MX record lookup

  • SMTP verification

  • Disposable email detection

  • Catch-all detection

These steps improve accuracy but also increase processing time especially if the target email servers respond slowly or use greylisting.


Bulk Searches

If you're running over 10,000 searches at once, you may experience slower performance. We recommend breaking large jobs into smaller batches for faster results.


For optimal speed and accuracy, adjust your filters based on your use case. Let us know if you need help optimizing your workflow!

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