If you need to adjust your login email address, you can easily do so yourself, from the Settings tab of your Pipedrive app. 

• Go to Settings > Customize > Personal > Account > Profile.
• Find the 'Email' field, and click 'Edit'
• Once clicked, you may now edit the login email address in that field.
• When finished, simply click Save.
  
  

Note: For security reasons, Pipedrive login email addresses may only be adjusted by their user, and cannot be changed by any Pipedrive employee.