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What is the process and impact of verifying emails before sending them?

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Hi everyone,

I'm starting to work with some email verification services and have a few questions:

When I verify emails before sending them, does it slow down the overall sending speed?

What will happen to emails that will be detected as invalid? Are they sent anyway, or are they blocked?

How do email verification services handle "unknown" emails? Are they treated as invalid or valid? And are they sent?

Lastly, have you found any particular email verification services to be more reliable or accurate than others?

Any insights or experiences would be greatly appreciated!

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1 Answers

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Sachin Tiwari
Sachin Tiwari answered 1 week ago

Hi!

Here’s some info to help with your questions about email verification services:

  • Does email verification slow down sending speed?

Email verification is done before sending, so it doesn’t affect the actual sending process. In fact, it helps speed things up by reducing bounces and retries caused by invalid addresses, improving your overall campaign performance.

  • What happens to emails detected as invalid?

Invalid emails are flagged during verification and should be removed from your sending list. Sending to these addresses will result in bounces, which can hurt your sender reputation. Good verification services, like ListClean.xyz, provide clear results to help you avoid this.

  • How are "unknown" emails handled? Unknown emails occur when a service can’t confirm validity due to server issues or lack of response. Most services, including ListClean.xyz, don’t block unknowns outright. It’s up to you whether to include them, but keep in mind that too many unknowns can still affect your deliverability.

  • Reliable and accurate services? Reliability depends on accuracy, speed, and transparency. Services like ListClean.xyz stand out for charging only for valid and invalid results, not unknowns. They’re also designed to process large lists quickly and efficiently.

Give ListClean.xyz a try—many users find it dependable for their email validation needs. Hope this helps! ?