BounceBan

Free catchall & risky email verification service for

@twentyone.de

Twentyone.de uses several email formats for their employees' email addresses. The most common and accurate format is {{{first.first_word}{last.all_word_i}} (e.g. {{johns@twentyone.de}). Other email formats used by TwentyOne Innovation GmbH include: {{{first.all_words}{last.all_words}} (e.g. {{john.smith@twentyone.de}), {{{first.first_word}{last.last_word_i}} (e.g. {{john.s@twentyone.de}), {{{last.all_words}{first.all_word_i}} (e.g. {{smithj@twentyone.de}). In total, TwentyOne Innovation GmbH employs up to five different email address patterns for their employees.

Unlimited single email verifications free forever!

Email patterns for @twentyone.de employees

Possible emails Percentage Action
johns@twentyone.de 24% Verify
john.smith@twentyone.de 21% Verify
john.s@twentyone.de 15% Verify
smithj@twentyone.de 6% Verify

Verifying Catchall Emails at twentyone.de: A Step-by-Step Guide with BounceBan

Introduction to TwentyOne Innovation GmbH and the Challenge of Verifying Emails at twentyone.de

TwentyOne Innovation GmbH is a German-based company operating in the information technology and services industry. With its headquarters located in Dresden, Saxony, Germany, the company is a significant player in the IT sector. As a responsible business owner or marketer, you may have encountered the need to verify email addresses from the twentyone.de domain. However, this can be a daunting task due to the domain's catchall nature and potential use of email security gateways (ESGs).

The Challenges of Verifying Emails at twentyone.de

Verifying email addresses at twentyone.de can be challenging for several reasons:

  • Catchall Emails: twentyone.de is a catchall domain, which means that simple SMTP tests used by traditional verification services may not be effective. This is because catchall emails do not respond to verification attempts in the same way as regular emails.
  • Email Security Gateways (ESGs): Although there is no concrete information on whether twentyone.de uses ESGs like Cisco Secure Email (ESA), Barracuda, Proofpoint, Abnormal Security, Mimecast, SpamTitan, Checkpoint, Forrester, Sophos, or others, if they do, it would make simple SMTP tests fail.
  • Lack of Bounce Messages: Even if you send test messages to an invalid email address at twentyone.de, the domain may not always return a bounce message, making it difficult for services like Scrubby to verify emails.
The Risks of Not Verifying Emails at twentyone.de

Failing to verify email addresses at twentyone.de can lead to several risks, including:

  • Risky Emails: Other services may leave most emails at twentyone.de as risky, leaving you unsure of how to proceed. Keeping these emails may result in a high bounce rate, while deleting them might mean missing out on potentially valuable contacts.
  • Outdated Lists and Damaged Reputation: If you don't verify your email list, it can become outdated, leading to high bounce rates, damaged sending reputation, and lower delivery, open, and click rates. In extreme cases, your email service providers may restrict your account.
How to Verify Emails at twentyone.de with BounceBan

Fortunately, BounceBan is the only service capable of reliably verifying catchall emails and emails behind Email Security Gateways. Here's a step-by-step guide to verify emails from twentyone.de using BounceBan:

Verifying Individual Emails
  1. Create a free account at https://bounceban.com/.
  2. Go to the BounceBan dashboard at https://bounceban.com/app/verify.
  3. Enter the email address you want to verify, e.g., xxx@twentyone.de, and click the "Verify for free" button. BounceBan provides unlimited free single verifications.
Verifying Emails in Bulk
  1. Upload a CSV file containing the email addresses you want to verify at https://bounceban.com/app/bulk/list.
Integrating via API
  1. If you're a developer, you can easily integrate BounceBan's verification service via the API. Refer to the API reference at https://bounceban.com/public/doc/api.html.
Why Choose BounceBan?

BounceBan stands out from other verification services due to its ability to accurately verify catchall emails with a 97%+ accuracy rate. Its success rate is consistently improving, and it verifies millions of emails daily using advanced AI to recognize patterns and enhance accuracy. BounceBan's verification is fast, taking only a few seconds for most emails, and it's completely GDPR-compliant.

FAQs about Verifying Emails at twentyone.de
General FAQs about Verifying Catchall Risky Emails from twentyone.de
  1. What is the main challenge of verifying emails at twentyone.de? The main challenge is that twentyone.de is a catchall domain, making it difficult for traditional verification services to verify emails accurately.
  2. Why do traditional verification services struggle with catchall emails? Traditional services use simple SMTP tests, which are ineffective for catchall emails.
  3. What is the risk of not verifying emails at twentyone.de? Failing to verify emails can lead to high bounce rates, damaged sending reputation, and lower delivery, open, and click rates.
  4. Can BounceBan verify emails behind Email Security Gateways (ESGs)? Yes, BounceBan is capable of verifying emails behind ESGs, making it a reliable choice for verifying emails at twentyone.de.
  5. What is the accuracy rate of BounceBan's verification service? BounceBan's verification service has a 97%+ accuracy rate, making it a trustworthy choice for verifying emails at twentyone.de.
FAQs about How BounceBan Can Help in Verifying Emails at twentyone.de
  1. Can BounceBan verify catchall emails at twentyone.de? Yes, BounceBan is specifically designed to verify catchall emails, including those at twentyone.de.
  2. How does BounceBan's AI-powered verification work? BounceBan uses advanced AI to recognize patterns and enhance accuracy, making it a reliable choice for verifying emails at twentyone.de.
  3. Is BounceBan's verification service fast? Yes, BounceBan's verification is fast, taking only a few seconds for most emails, and you can verify thousands of emails concurrently.
  4. Is BounceBan GDPR-compliant? Yes, BounceBan is completely GDPR-compliant, as it never has to actually send an email to verify the email, unlike services like Scrubby.
  5. Can I integrate BounceBan's verification service via API? Yes, developers can easily integrate BounceBan's verification service via the API, making it a flexible choice for verifying emails at twentyone.de.
FAQs about Basic Information of twentyone.de
  1. What is the company name associated with the twentyone.de domain? The company name is TwentyOne Innovation GmbH.
  2. What is the industry of TwentyOne Innovation GmbH? The company operates in the information technology and services industry.
  3. What is the address of TwentyOne Innovation GmbH? The company is located at Franz-Liszt Straße 5, Dresden, Sachsen 01219, DE, Germany.
  4. What is the most common email pattern used at twentyone.de? The most common email pattern is johns@twentyone.de (24%).
  5. What are the MX records for twentyone.de? The MX records are mx03.secure-mailgate.com and mx04.secure-mailgate.com.
  6. Does twentyone.de use a catchall email system? Yes, twentyone.de is a catchall domain.
  7. Can I use BounceBan to verify emails from other domains? Yes, BounceBan is not limited to verifying emails at twentyone.de and can be used for verifying emails from other domains as well.
  8. How do I get started with verifying emails at twentyone.de using BounceBan? Create a free account at https://bounceban.com/ and follow the step-by-step guide to verify emails.
  9. Is BounceBan's verification service free? BounceBan provides unlimited free single verifications, and you can also purchase credits for bulk verifications.
  10. What if I have further questions about verifying emails at twentyone.de using BounceBan? You can refer to BounceBan's detailed knowledge base at https://bounceban.tawk.help or contact their support team for assistance.

By using BounceBan to verify emails at twentyone.de, you can ensure that your email lists are accurate, and you're not risking your sending reputation or email deliverability.

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