Most Common Email Formats of duo.com

To validate a guessed email address, start by searching for it on Google to see if it's publicly listed. If you're tech-savvy, you can use nslookup or dig for MX record checks and telnet or nc for SMTP checks to ensure the email address exists. You can check how test email validity on our blog. For the best quality and fastest results, use tools like Mailmo Linkedin email finder, which offer advanced verification methods and access to extensive email database.

We use a combination of verified data sources, user submissions, and algorithmic validation to ensure the accuracy of the email formats for Duo Security. Our main source for email patterns is publicly available data, which is then cross-referenced with our internal database and user submissions to ensure the highest accuracy.

If the most common format for Duo Security, which is {f}{last}, does not seem to be valid, you can try generating email by using other less common email patterns of Duo Security.

Our data comes primarily from public sources, such as company website or PR posts on 3rd party websites. Even if the email format is dominated by one pattern, it's always good to verify it before sending an email. Imagine if the company hires two people with the same name, this requires a different email format. Since accuracy is crucial when sending cold emails, we recommend double checking even if the most common email pattern is correct. You can do that on your own with various tools or simply use Mailmo Linkedin email finder to get the most accurate and up-to-date email addresses of any person on Linkedin.