shared-mailbox

Roundcube plugin to populate and maintain user identities automatically on each login, based on corresponding data from the plugin's config file. Especially useful for shared mailboxes (like info@example.com) with shared IMAP namespaces.

Open-source organisational email on Cloudflare with personal and shared mailboxes

Synchronize Exchange Online users with Full Access to Shared Mailboxes to HelloID Resource Owner Groupmemberships

MailDesk for WordPress is a secure, open-source, self-hosted webmail and email client plugin for WordPress Admin. Features multi-account IMAP sync, SMTP sending, Gmail/Outlook-style inbox, drafts, contacts, signatures, templates, rules, shared access, encrypted credentials, REST API, diagnostics, and extensible PHP mail transports.

Shared mailbox access propagation checker with client/server next actions.

Synchronizes Exchange Online Shared Mailbox Full Access Permissions to HelloID Self service productassignments

Missivus for WordPress — send WordPress email through Microsoft Graph with application permissions and a shared mailbox. No SMTP, no user login. Free, GPLv3.

Logic App repo for useful examples

Bulk-remove Full Access, Send As, and Send on Behalf permissions from shared mailboxes in Exchange Online using a CSV-driven PowerShell script.

Hybrid Exchange disaster recovery: convert on-premises mailboxes (users and shared, with FullAccess/SendAs/SendOnBehalf) to Exchange Online when the Exchange servers are lost, and roll everything back. Backup before every write, HTML reports. Windows PowerShell 5.1.

Synchronizes Exchange Online Shared Mailboxes to HelloID Self service products

Missivus for Ghost — send Ghost transactional email through Microsoft Graph with application permissions and a shared mailbox. No SMTP, no user login. Free, GPLv3.

Exchange On-Premise - Target - Permissions

Identifies which shared mailboxes a user can access in Exchange Online.

Exchange Online - Target - Permissions