| Format | Example | Percentage |
|---|---|---|
| Format:firstName_lastName | jane_doe@gmail.com | Percentage:74% |
| Format:lastName_firstName | doe_jane@gmail.com | Percentage:6% |
| Format:lastNamefirstName | doejane@gmail.com | Percentage:6% |
| Format:firstNamelastName | janedoe@gmail.com | Percentage:5% |
| Format:firstName.lastName | jane.doe@gmail.com | Percentage:2% |
| Format:firstName-lastName | jane-doe@gmail.com | Percentage:1% |
| Format:lastName_firstName | doe_jane@aol.com | Percentage:1% |
| Format:lastName | doe@live.com | Percentage:1% |
| Format:firstName-lastName | jane-doe@outlook.com | Percentage:1% |
| Format:lastName_firstName | doe_jane@earthlink.net | Percentage:1% |
| Format:lastName-firstName | doe-jane@qq.com | Percentage:1% |
| Format:firstName.lastName | jane.doe@outlook.com | Percentage:1% |
Cornerstone Development Services, LLC employee email verification for instant deliverability checks.
Cornerstone Development Services, LLC, founded in 2007, is headquartered in Cortez, Colorado and serves clients across the United States with a team of fewer than ten professionals generating annual revenue between $1 million and $10 million.
The firm specializes in a wide array of business and technical disciplines—including management, operations, logistics, business development, defense & security product services, contracting support, prototyping, short‑run manufacturing, government contracting, research, consulting, OSINT, IT support, USG SME advisory, training, human capital strategy, engineering and design.
Led by Elizabeth Howell, a self‑employed author with expertise in strategic consulting, Cornerstone focuses on delivering tailored solutions that combine operational efficiency with innovative technology to help organizations navigate complex markets.
Cornerstone Development Services, LLC uses 12 email formats across its organization. The most common pattern is firstName_lastName (e.g., jane_doe@gmail.com), used in approximately 74% of work addresses.
Cornerstone Development Services, LLC currently employs over 1-10 people from United States, with a head office in Cortez, Colorado, US.
SignalHire complies with the General Data Protection Regulation (GDPR). SignalHire follows GDPR requirements, including but not limited to rights of data subjects to access, correct, or delete their personal information and supports the right to be forgotten.
SignalHire is CCPA-compliant and provides California residents the right to know, access, opt out, and request deletion of their personal data.
