DES
Digi Email Systems documentation
A complete practical guide to Webmail, administration, mail flow, security, migration, workers and everyday DES operations.
Structured guide
Start with the task you need to complete
Every section contains concrete steps, examples and verification points.
Digi Email Systems — complete guide
Practical documentation for everyday use, administration, mail flow, security, migration and recovery.
System model: System, Owner and Domain
How DES separates the platform, organisations, domains and data.
Sign-in, password and sessions
Signing in to DES, mandatory temporary-password change and safe session termination.
Roles, permissions and access boundaries
What System Admin, Owner Admin, Domain Admin and an ordinary user can do.
Users and administrative accounts
Creating, activating and maintaining users without automatically granting access to other mailboxes.
Domain management
Adding, activating and maintaining a mail domain, its administrators and policies.
Personal and team mailboxes
The difference between personal and team mailboxes, creation, quotas and access responsibility.
Mail Access Mode: Basic and Proxy
How the system setting determines access to shared and delegated mailboxes.
Sharing, Delegation and Act As
Granting access to another mailbox without sharing its password.
Identities, signatures and sending rights
Managing the From address, Reply-To, signatures and default identity.
Webmail — main navigation
Finding your way around mail, quick access to core functions and the current mailbox context.
Inbox, Sent and folders
Working with message lists, paging and moving messages between folders.
Composing and sending a message
Selecting an identity, recipients, subject, content and sending safely.
Reading, search and conversations
Opening a message, searching content and reviewing a related thread.
Attachments, flags and read state
Safe file download, marking and Seen/Unread synchronisation.
Contacts and address books
Personal and domain contacts, autocomplete and control of shared entries.
Calendar and tasks
Creating events and tasks and sharing working information.
Automatic mail rules
Creating, prioritising and manually applying rules to mail.
Spam and Quarantine
The difference between unwanted mail and a held message, approval and deletion.
User audit and traceability
Reviewing Webmail actions and verifying access to a shared mailbox.
Administrative dashboard
What an operator should check after sign-in and how to move to a specific issue.
System settings
Webmail brand, Edge token, Mail Access Mode and password policy.
Domain and mailbox administration
Practical flow through Admin → Mail — domain detail, mailbox detail and identities.
DKIM and domain authentication
Creating a selector, publishing the DNS record and verifying it before active delivery.
Security Engine and message decisions
Reviewing security outcomes and avoiding unsafe bulk release.
Modules and feature control
Effective state, dependencies, requested state and controlled overrides.
Licensing, Trial, Grace and Hard Lock
How licence mode affects access, modules and outbound mail.
Mail Flow — overview
The path of inbound and outbound mail and how to locate its current state.
Queues, retry and stale recovery
Safe resubmission and release of stuck leases.
Message Trace and timeline
Following one message through acceptance, security, queue and delivery.
SMTP, LMTP and Edge delivery
The role of gateway ingress, internal LMTP delivery and protected Edge exchange.
IMAP and external mail clients
Connecting a client, folders, Seen/Unread, search and limitations.
Workflow jobs and workers
Job lifecycle, claim, heartbeat, retry and safe operator actions.
Planning a migration to DES
Choosing a source, staging, mapping, pilot batch and acceptance criteria.
Migration jobs — control and recovery
Creation, Pause/Resume/Cancel, retry and stale recovery for imports.
Export and data portability
EML ZIP, MBOX and read-only IMAP export for controlled mail extraction.
Office nodes, spooling and reconnection
Registering a remote node, heartbeat and behaviour during an outage.
Monitoring, SLA, alerts and incidents
Service and office-node state, periodic snapshots and response to violations.
Nextera integration
Standalone or connected mode, plans, assignment, usage sync and safe detach behaviour.
Quotas, storage and maintenance
Tracking used space, recalculation and response when a limit is reached.
System audit and evidence
Tracing administrative, mail-flow, security and integration events.
Daily administration runbook
A concise sequence for checking DES without making chaotic changes.
Troubleshooting delivery
A method for inbound, outbound and internal messages that do not reach the recipient.
Troubleshooting sign-in and Webmail
Checking account state, password, role, mailbox context and delegation.
Troubleshooting workers and migrations
Responding to a stale job, repeating failures and incomplete import.
Recovery and escalation
What to preserve, what not to do and when to hand a problem to a higher support level.