Select this option to enable automatic archiving. See the Archive Mail Agent documentation for detailed information. You may also wish to read the Archiving section of this handbook. This plugin is enabled by default.

Select this option to enable followup reminders. See the Followup Reminder Agent documentation for additional information. This plugin is enabled by default.

Select this option to enable new email notifications. You may tailor the fields to be displayed in the "standard" notification message. You may also select audio signals (spoken text, pre-recorded sounds), create log file entries, etc. This plugin is enabled by default.

Select this option to enable delayed dispatching. See the Send Later Agent documentation for additional information. This plugin is enabled by default.

Select this option to create a set of "unified" mailboxes. KMail will automatically create three of these, labeled Inbox, Drafts, and Sent. If you have defined both a Local Folders inbox and one or more IMAP inbox destinations, KMail will display all the various inbox files as one consolidated virtual Inbox folder. You may use the configuration dialog to create additional virtual mailboxes, tailoring each one as you see fit. This plugin is disabled by default.

Select this option to add new addresses to one of your address books whenever you send email to a new contact. Use the configuration dialog to associate address books with identities. This plugin is disabled by default.

Select this option to apply a few rules before actually sending a message. This plugin is enabled by default, and will automatically notify you when you are trying to send more than one copy of the message to the same person.

Select this option to enable address screening on outgoing messages. Use the configuration dialog to define a white list and/or a black list for each defined identity. This plugin is disabled by default.

Select this option to force the composer to open an external text editor when it starts up. Use the configuration dialog for this plugin to specify the editor that will be called. This plugin is disabled by default.

Select this option to add the Tools → Autocorrect Text > function to the composer. This plugin is disabled by default, and is apparently still under construction.

Select this option to add the Edit → Change Case > function to the composer. This plugin is disabled by default.

Select this option to add the Edit → Insert Email... function to the composer. This lets you insert a selected email address from an address book into the body of your message with a simple point and click of the left mouse button. This plugin is disabled by default.

Select this option to add the Edit → Insert Non Breaking Space function to the composer. This plugin is disabled by default.

Select this option to add a tiny bit of not quite functional code. This plugin is still under construction, and is also disabled by default.

Select this option to add the Edit → Insert Special Character... function to the composer. This plugin is enabled by default.

Select this option to add the View → Snippets feature to the composer. This plugin is enabled by default.

Select this option to add the Message → Share Mail Text > function to the composer. Four options are offered: Nextcloud, Pastebin, Bluetooth, and Email (opens a second composer window). This plugin is disabled by default.

Select this option to add the Edit → Zoom... > function to the composer. This plugin is disabled by default.

Select this option to add the Tools → Check Grammar (Grammalecte) option to the Composer window. This option is special, for the French language only.

Select this option to add the Tools → Check Grammar (Language Tool) option to the Composer window. This is a multi-purpose tool, with support for checking grammar in many different languages.

Select this option to enable the display of "Brief" headers. This plugin is enabled by default.

Select this option to enable the display of "KMail 5.2" headers. This plugin is enabled by default.

Select this option to enable the display of "Fancy" headers. This plugin is enabled by default.

Select this option to enable the display of "Cute" headers. This plugin is enabled by default.

Select this option to enable the display of "Long" headers. This plugin is disabled by default. (Long headers are similar to standard headers, but will display some less common header information, like "Reply-to", when such headers are present.)

Select this option to enable the display of "Standard" headers. This plugin is disabled by default. (Standard headers are the same as Fancy headers, but without the shaded background.)

Select this option to permit the creation of a calendar event while viewing a KMail message. This plugin is disabled by default.

Select this option to permit the creation of a Kontact note while viewing a KMail message. This plugin is disabled by default.

Select this option to permit the creation of a todo item in KOrganizer while viewing a KMail message. This plugin is disabled by default.

Select this option to enable the "Expand URL" function. This plugin is enabled by default.

Select this option to permit the invocation of an executable command from the toolbar. Use the associated configuration dialog to select the executable, and to give it a name. The name you choose can later be added to the toolbar as a button, so you may invoke the script at will. This plugin is disabled by default.

The translator function is available in the composer by default. Use this plugin (via the toolbar) to make the translator available in the message preview window. This plugin is enabled by default.

This dialog allows you to control DomainKeys Identified Mail (DKIM) processing. DKIM is a cryptographic protocol that can assure you a particular message originated from the internet domain it claims to be from. If the sender has set up DKIM properly and DKIM is enabled here, you will see a message "DKIM valid", and sometimes the name of the entity that signed the message, in the status bar at the bottom of the message preview window.

Use this configuration dialog to set expiry criteria for your trash folder(s). See "Folder Properties" documentation for more information.

Use this configuration dialog to set custom folder properties for several different folders at once. You can select the folders to be modified from a tree view of all your folders on the left, and select properties to be set from the General, View, Templates, and Expiry tabs of the "Folder Properties" dialog.

Use this configuration dialog to enable / disable Gravatar (Globally Recognized Avatar) support.

Select this option to add the Anti-Spam Wizard to the Tools menu. This plugin is disabled by default. Note that once you have installed anti-spam software, this plugin may be safely disabled; the plugin is only needed for installing anti-spam software, not for running it.

Select this option to add the Anti-Virus Wizard to the Tools menu. This plugin is disabled by default. Note that once you have installed anti-virus software, this plugin may be safely disabled; the plugin is only needed for installing anti-virus software, not for running it.

Select this option to add the Message → Show Message Structure Ctrl+Alt+D function in the message preview window. This plugin is enabled by default.

Select this option to enable the Activity Log function, which is disabled by default. This plugin adds a new entry Log Activities to the Tools menu. Primarily for use by program developers -- the default log function does not provide much information (just a time stamp and "Ready", for most "events").

Select this option to add the Adblock Plus filters to KMail. If you choose to activate this plugin, be prepared to spend a good deal of time tweaking the configuration file to get the filters you really want. This plugin is disabled by default.

Select this option to force KMail to send a "Do Not Track" request to a remote server when an HTML message asks to download remote content. The effect of a "Do Not Track" request depends on the policy adopted by the web server receiving the request. Some sites honor it. Others don't.

Advertisers have their eyes everywhere. HTML-encoded messages often include a 0x0- or 1x1-pixel "image" (aka a "tracking pixel") that is actually a tracking URL in disguise. When KMail fetches image data from a web server, it must utilize the URLs embedded in the message; the server can use information embedded in the URL to infer that you have opened the message, etc.

Sending a "Do Not Track" request may enhance your privacy slightly. But the only certain way to avoid tracking pixels is never to download remote images encoded in HTML messages. This plugin is enabled by default.