By default, every user of this site is able to receive e-mails through the site.
When viewing someone's meditation or comment, you'll see the words "Submitted by N on Date and Time" above their entry. Click on their name to view their user profile. Click on the "Contact" tab, and you'll find a form you can use to e-mail them.
Note: The e-mail address you use to register with this site is never made public. The only way to e-mail a member of this site is through the contact form.
Note: You can edit your user profile, if you wish, so that people cannot use the contact form to send you e-mails.