A single EPA Mail Clerk can support - individually or simultaneously - three different types of e-mail domains:
Multi-Owner Domains (MODs) - like aol.com© - and Filter-Forward Domains(FFDs) - like EPAmail.com - in which:
1. Every mailbox is individually leased from and operated independently of the entity that owns and supports domain operation
2. 'mailbox user' and 'mailbox owner' are equivalent terms referring to the mailbox lessee who has absolute, independent control of mailbox usage.
3. Any number of Shared Preferences Sets may be defined to be applied to every e-mail addressed to an EPA Group of mailboxes.
4. Every domain mailbox need NOT be subject to the EPA Mail Clerk's control.
One-Owner Domains (OODs) - like PragmasInc.com - in which:
1. The domain owner both owns and controls operation of every mailbox but may delegate ownership and control of one or more boxes to individuals.
2. 'mailbox user' and 'mailbox owner' are NOT equivalent terms. and the mailbox user may have only such usage and control of the mailbox as is delegated by the mailbox owner.
3. Any number of Shared Preferences Sets may be defined to be applied to every e-mail addressed to a one of a group of mailboxes.
4 An optional Default Preferences Set may be defined to be applied to every e-mail addressed to a mailbox for which no Preferences Set is on file.
5. If no Default Preferences Set is present, every domain mailbox NEED NOT be subject to the EPA Mail Clerk's control. If a Default Preferences Set is present, every mailbox WILL be subject to the EPA Mail Clerk's control.
An FFD and a MOD differ significantly ONLY in that all e-mail transmitted from the FFD is that resulting from the receipt and processing of either an Internet-originated or LAN-originated e-mail.
A Shared Preferences Set permits one or more managers to administer a group of mailboxes independently - subject only to the control of domain System Administrators or E-mail Administrators (if any). In an MOD and an FFD, this permits the definition of accounts and account users. In an OOD, this permits control to be delegated to domain user groupings (departments, offices, etc.) while retaining total control of the entire domain.
A Default Preferences Set relieves a domain System Administrator or Email Administrator of the necessity of creating and maintaining a Preferences Set for each and every domain mailbox.