[9.8.7]
[+] Mobile: mail login form migrated to the new Vue.js UI.
[+] Mobile: added read/unread buttons.
[+] Removed the unnecessary confirmation dialog when deleting a message.
[+] Added Custom Mail Tags module.
[+] Long folder names are now truncated in the Files drawer.
[+] Added missing Contacts indexes, which fixes very slow performance.
[+] Verified compatibility with PHP 8.4 and 8.5.
[*] Extended the log entry format to include the user account, session hash
[*] Fixed cross-user arbitrary file access.
[*] Fixed the verify-security-key vulnerability.
[*] Fixed JS/CSS/HTML injection in calendar events.
[*] Mobile: fixed plain-text messages and linked images not being shown in emails.
[*] Messages are moved to Trash instead of being removed permanently.
[*] Fixed BCC with scheduled messages.
[*] Fixed fresh contacts missing from the suggestion list.
[*] Fixed the incorrect path when restoring a file from Trash.
[*] Fixed creating public links and deleting file shortcuts.
[*] Fixed removing the last instance of a recurring event.
[*] Fixed the number of repetitions of recurring tasks.
[*] Fixed using the calendar with an alias email address.
[*] Fixed logging in as superadmin and deleting a user via the admin panel.
[*] Fixed tenant admin access to users' data.
[*] Users are no longer deleted when their mail server is deleted.

[9.8.6]
[+] Fully new mobile web version
[*] Fixed SQL, XML and CSV injection vulnerabilities
[*] Fixed user not being logged out from other sessions after changing account password
[*] Restored AllowUsedDevices functionality
[*] Fixed missing linebreaks in forwarded message headers
[*] Fixed losing contact's friendly name when reopening a message draft
[*] Improved performance of Mail folder loading
[*] Fixed folder creation with a long name in Files
[*] Fixed system user group returning an empty Email list
[*] Fixed UpdateGroup not updating group contacts correctly
[*] Fixed public calendar shown as empty
[*] Fixed visual issues in the list of own PGP keys
[*] Various fixes and improvements

[9.8.5]
[+] Improved display of Outlook-formatted emails
[+] Added support for elliptic curve cryptography (ECC) PGP keys
[*] Fixed displaying PGP keys on user settings screen
[*] Fixed XSS vulnerabilities
[*] Fixed horizontal split mismatch from 9.8.4
[*] Fixed external mail host not set in iOS profile
[*] Misc. security improvements
[*] Minor fixes and improvements in Files module
[*] Minor UI improvements in Calendar module

[9.8.4]
[*] Closed Secure Link vulnerability
[*] iOS profile now uses external IMAP settings correctly
[*] Fixed issue with importing dcntacts from VCF files
[*] Security improvements

[9.8.3]
[*] Fixed opening attachement is attached .eml files
[*] Fixed problem with reccurent events in external iCal feed
[*] Fixed problem with global address book on iOS
[*] Fixed displaying Tasks with no time
[*] Fixed file drag'n'drop between different storages