diff --git a/doc/src/04020-module-mails.md b/doc/src/04020-module-mails.md
index 1e27fbb9..d4fe60dd 100644
--- a/doc/src/04020-module-mails.md
+++ b/doc/src/04020-module-mails.md
@@ -10,3 +10,5 @@ The goal of the initial implementation is only a CLI, not a TUI like mutt offers
 
 So this module offers functionality to read (Maildir) mailboxes, search for and list mails and mail-threads and reply to mails (by spawning the `$EDITOR`).
 
+Outgoing mails are pushed to a special directory and can later on be send via `imag-mail` which calls a MTA (for example msmtp) and also creates store entries for the outgoing mails.
+
diff --git a/doc/src/05100-lib-mails.md b/doc/src/05100-lib-mails.md
index bd05bdc9..dd0e3469 100644
--- a/doc/src/05100-lib-mails.md
+++ b/doc/src/05100-lib-mails.md
@@ -1,2 +1,9 @@
 ## libimagmails
 
+The mail library implements everything that is needed for beeing used to implement a mail reader (MUA).
+
+It therefor providea reading mailboxes, getting related content or mails, saving attachements to external locations, crafting new mails and responses,...
+
+It also offers, natively, ways to search for mails (which are represented as imag entries) via tags, categories or even other metadata.
+
+For more information on the domain of the `imag-mail` command, look at the documentation of the @sec:modules:mails module.