You can use an email field to store email addresses. Email addresses are treated differently from normal text:
In the entry editor, there will be an email link next to the field value. In addition, if the field containing the address is added as a column to a Table view, the address will be presented as a link. Clicking these links will open your email application to compose a new message to that person.
A table view with email addresses in a column will offer the Send mail to… action. This action allows you to copy several email addresses at once to paste into your email application.
Note: Email addresses copied from Dabble DB are separated by commas since that is the Internet standard for email. Microsoft Outlook does not follow this standard, however, and will not allow you to paste email addresses copied from Dabble DB unless you change the default configuration.
Follow these steps to configure Outlook to recognize the comma as a valid e-mail address separator:
For more information, please see this Microsoft support article.