Verifying emails is a crucial step in maintaining a healthy email list, especially when it comes to domains like under.io that use catchall emails. In this blog post, we'll explore the challenges of verifying emails at under.io, the risks of not doing so, and how BounceBan can help you verify catchall emails with ease.

About Under.io

Under.io is a financial services company based in Chicago, Illinois, United States. According to their AngelList profile, Under.io is a platform that provides financial infrastructure for developers. With a domain like under.io, it's essential to verify emails to ensure that your email list is accurate and up-to-date.

Challenges of Verifying Emails at Under.io

Verifying emails at under.io can be challenging due to several reasons:

• Email Security Gateways (ESG): Under.io might use email security gateways like Cisco Secure Email (ESA), Barracuda, Proofpoint, Abnormal Security, Mimecast, SpamTitan, Checkpoint, Forrester, or Sophos, which can make simple SMTP tests fail.
• Catchall Emails: Under.io uses catchall emails, which means that simple SMTP tests used by traditional verification services like Emailable, NeverBounce, ZeroBounce, DeBounce, SendGrid, Snov, RocketReach, and Hunter might not work.
• No Bounce Message: Under.io may not always return a bounce message even if you send test messages to an invalid email address at that domain, making services like Scrubby not work.

Risks of Not Verifying Emails at Under.io

Not verifying emails at under.io can lead to several risks:

• Risky Emails: Other services may leave most emails at under.io as risky, leaving you unsure of how to deal with them. If you keep the emails, you may risk seeing a high bounce rate; if you delete all of them, you risk missing potentially valuable valid emails.
• Outdated List: If you don't verify emails, your list will be outdated, resulting in a high bounce rate, damaging your sending reputation, and lowering your delivery rate, open rate, and click rate. If the bounce rate is too high, your email service providers may restrict your account.

Using BounceBan to Verify Emails at Under.io

BounceBan is the only service capable of reliably verifying catchall emails and emails behind Email Security Gateways. Here's how to use BounceBan to verify emails at under.io:

• Individual Verification: Create a free account at https://bounceban.com/, go to the BounceBan dashboard https://bounceban.com/app/verify, enter the email for verification xxx@under.io, and click the "Verify for free" button. BounceBan provides unlimited free single verifications.
• Bulk Verification: To verify emails from under.io and other domains in bulk, upload a CSV at https://bounceban.com/app/bulk/list.
• API Integration: If you're a developer, you can easily integrate BounceBan via the APIs. API reference: https://bounceban.com/public/doc/api.html.

Benefits of Using BounceBan

BounceBan offers several benefits when verifying emails at under.io:

• Catchall Email Verification: BounceBan can accurately verify over 80% of catchall emails with a 97%+ accuracy rate.
• Fast Verification: BounceBan verification is fast, taking only a few seconds for most emails. For a small share of catchall emails, it may take a few minutes. You can verify thousands of emails concurrently.
• GDPR Compliance: BounceBan never has to actually send an email to verify the email, making it completely GDPR compliant. Unlike services like Scrubby, which verify emails by sending emails, BounceBan uses an AI finetuned with lots of signals to accurately verify all emails, including catchall emails.

FAQs

1. What is the main challenge of verifying emails at under.io? The main challenge is that under.io uses catchall emails, which can make simple SMTP tests fail.
2. Why do traditional verification services fail to verify emails at under.io? Traditional verification services like Emailable, NeverBounce, ZeroBounce, DeBounce, SendGrid, Snov, RocketReach, and Hunter fail to verify emails at under.io because they use simple SMTP tests that can't handle catchall emails.
3. What is the risk of not verifying emails at under.io? The risk of not verifying emails at under.io is that your list will be outdated, resulting in a high bounce rate, damaging your sending reputation, and lowering your delivery rate, open rate, and click rate.
4. Can BounceBan verify catchall emails at under.io? Yes, BounceBan is the only service capable of reliably verifying catchall emails and emails behind Email Security Gateways.
5. Is BounceBan GDPR compliant? Yes, BounceBan is GDPR compliant because it never has to actually send an email to verify the email, unlike services like Scrubby.

1. How does BounceBan verify emails at under.io? BounceBan uses an AI finetuned with lots of signals to accurately verify all emails, including catchall emails.
2. What is the accuracy rate of BounceBan in verifying catchall emails? BounceBan can accurately verify over 80% of catchall emails with a 97%+ accuracy rate.
3. How fast is BounceBan verification? BounceBan verification is fast, taking only a few seconds for most emails. For a small share of catchall emails, it may take a few minutes.
4. Can I verify thousands of emails concurrently with BounceBan? Yes, you can verify thousands of emails concurrently with BounceBan.
5. Is BounceBan easy to integrate with my application? Yes, BounceBan is easy to integrate with your application via APIs. API reference: https://bounceban.com/public/doc/api.html.

1. What is Under.io? Under.io is a financial services company based in Chicago, Illinois, United States.
2. What is the domain of Under.io? The domain of Under.io is under.io.
3. Does Under.io use catchall emails? Yes, Under.io uses catchall emails.
4. What is the most common email pattern at Under.io? The most common email pattern at Under.io is sjohn@under.io (27%).
5. What are the MX records of Under.io? The MX records of Under.io are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt4.aspmx.l.google.com, and alt3.aspmx.l.google.com.
6. What industry does Under.io operate in? Under.io operates in the financial services industry.
7. Where is Under.io based? Under.io is based in Chicago, Illinois, United States.
8. What is the address of Under.io? The address of Under.io is 1658 North Milwaukee Avenue, Chicago, Illinois, United States.
9. Can I verify emails at Under.io using traditional verification services? No, traditional verification services like Emailable, NeverBounce, ZeroBounce, DeBounce, SendGrid, Snov, RocketReach, and Hunter fail to verify emails at Under.io because they use simple SMTP tests that can't handle catchall emails.
10. Is BounceBan the only service that can verify catchall emails at Under.io? Yes, BounceBan is the only service capable of reliably verifying catchall emails and emails behind Email Security Gateways.

By using BounceBan to verify emails at under.io, you can ensure that your email list is accurate and up-to-date, reducing the risk of high bounce rates and improving your sending reputation.