Added new Sieve Template. Thanks to @EricThi

data/web/inc/presets/sieve/sieve_8.yml

@@ -0,0 +1,18 @@
+headline: lang.sieve_preset_8
+content: |
+  require "fileinto";
+  require "mailbox";
+  require "variables";
+  require "subaddress";
+  require "envelope";
+  require "duplicate";
+  require "imap4flags";
+  if header :matches "To" "*mail@domain.tld*" {
+    redirect "anothermail@anotherdomain.tld";
+    setflag "\\seen"; /* Mark mail as read */
+    fileInto "INBOX/SubFolder"; /* Move mail on subfolder after */
+  } else {
+    # The rest goes into INBOX
+    # default is "implicit keep", we do it explicitly here
+    keep;
+  }

data/web/lang/lang.de-de.json

@@ -857,7 +857,7 @@
         "sieve_preset_5": "Auto-Responder (Vacation, Urlaub)",
         "sieve_preset_6": "E-Mails mit Nachricht abweisen",
         "sieve_preset_7": "Weiterleiten und behalten oder verwerfen",
-        "sieve_preset_8": "Nachricht verwerfen, wenn Absender und Alias-Ziel identisch sind.",
+        "sieve_preset_8": "E-Mail eines bestimmten Absenders umleiten, als gelesen markieren und in Unterordner sortieren",
         "sieve_preset_header": "Beispielinhalte zur Einsicht stehen nachstehend bereit. Siehe auch <a href=\"https://de.wikipedia.org/wiki/Sieve\" target=\"_blank\">Wikipedia</a>.",
         "sogo_visible": "Alias Sichtbarkeit in SOGo",
         "sogo_visible_n": "Alias in SOGo verbergen",

data/web/lang/lang.en-gb.json

@@ -873,7 +873,7 @@
         "sieve_preset_5": "Auto responder (vacation)",
         "sieve_preset_6": "Reject mail with reponse",
         "sieve_preset_7": "Redirect and keep/drop",
-        "sieve_preset_8": "Discard message sent to an alias address the sender is part of",
+        "sieve_preset_8": "Redirect e-mail from a specific sender, mark as read and sort into subfolder",
         "sieve_preset_header": "Please see the example presets below. For more details see <a href=\"https://en.wikipedia.org/wiki/Sieve_(mail_filtering_language)\" target=\"_blank\">Wikipedia</a>.",
         "sogo_visible": "Alias is visible in SOGo",
         "sogo_visible_n": "Hide alias in SOGo",