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The most common HackerOne email format is [first] (ex. jane@hackerone.com), which is being used by 53.3% of HackerOne work email addresses.

Other common HackerOne email patterns are [first_initial][last] (ex. jdoe@hackerone.com) and [first].[last] (ex. jane.doe@hackerone.com). In all, HackerOne uses 10 work email formats.

HackerOne Email Formats and Examples

Email Format Example Percentage
[first] jane@hackerone.com
53.3%
[first_initial][last] jdoe@hackerone.com
41.9%
[first].[last] jane.doe@hackerone.com
2.4%
[last] doe@hackerone.com
1.3%
[last][first_initial] doej@hackerone.com
0.6%
[first][last] janedoe@hackerone.com
0.2%
[first][last_initial] janed@hackerone.com
0.2%
[first]_[last] jane_doe@hackerone.com
0.1%

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