Thunderbird v60.0 Email Client Released (thunderbird.net)
Thunderbird version 60, featuring a number of new features and changes, is now available as a direct download from thunderbird.net, the email client vendor said. The changelog: When writing a message, a delete button now allows the removal of a recipient. This delete button is displayed when hovering the To/Cc/Bcc selector.
Many improvements to attachments handling during compose: Attachments can now be reordered using a dialog, keyboard shortcuts, or drag and drop. The "Attach" button moved to the right to be above the attachment pane. The access key of the attachment pane (e.g. Alt+M, may vary depending on localization, Ctrl+M on Mac) now also works to show or hide the pane. The attachment pane can also be shown initially when composing a new message. Right-click on the header to enable this option. Hiding a non-empty attachment pane will now show a placeholder paperclip to indicate the presence of attachments and avoid sending them accidentally.
"Edit Template" command. This also solves various problems when saving as template (duplicates created, message ID lost).
"New Message from Template" command.
Allow changing the Spellcheck Language from status bar.
Light and Dark themes.
WebExtension themes are now enabled in Thunderbird.
A default startup directory in the address book window can now be configured.
Individual feed update interval. Read the full-change log here.
Many improvements to attachments handling during compose: Attachments can now be reordered using a dialog, keyboard shortcuts, or drag and drop. The "Attach" button moved to the right to be above the attachment pane. The access key of the attachment pane (e.g. Alt+M, may vary depending on localization, Ctrl+M on Mac) now also works to show or hide the pane. The attachment pane can also be shown initially when composing a new message. Right-click on the header to enable this option. Hiding a non-empty attachment pane will now show a placeholder paperclip to indicate the presence of attachments and avoid sending them accidentally.
"Edit Template" command. This also solves various problems when saving as template (duplicates created, message ID lost).
"New Message from Template" command.
Allow changing the Spellcheck Language from status bar.
Light and Dark themes.
WebExtension themes are now enabled in Thunderbird.
A default startup directory in the address book window can now be configured.
Individual feed update interval. Read the full-change log here.
That is what is called in the industry as vendor lock in.
They sell you a wonderfully integrated system, which is all fine and good until you want to De-integrate with the system. Then you need to make the choice, loose features, or replace entire system.
A system that uses Open Standards may have all the features, but will require some additional setup work. As Emails, Calendars, Contacts, Single Signon authentication are all different protocols, and can be managed across may different servers vs an exchange server which does it all... Except when something new comes out.
If something is so important that you feel the need to post it on the internet... It probably isn't that important.