The Email Users section is accessible on the website under the Admin sub-section:
The email users feature allows an Admin Account to email to every user from their account. This can be used to communicate new releases or documentation, for example.
To send an email, you will need to specify:
|Custom reply-to address||Optional - Use if you want the user to be able to answer you directly once they receive the email|
| Body of the email to be sent
After composing the email, make sure to click Send.