diff --git a/docs/u_e-rspamd.md b/docs/u_e-rspamd.md
index d90a3b254..baaee96b5 100644
--- a/docs/u_e-rspamd.md
+++ b/docs/u_e-rspamd.md
@@ -1,4 +1,4 @@
-Rspamd is used for AV handling, DKIM signing and SPAM handling. It's a powerful and fast filter system. For a more in-depth documentation on Rspamd please visit it's [own documentation](https://rspamd.com/doc/index.html).
+Rspamd is used for AV handling, DKIM signing and SPAM handling. It's a powerful and fast filter system. For a more in-depth documentation on Rspamd please visit its [own documentation](https://rspamd.com/doc/index.html).
 
 ## Learn Spam & Ham
 
diff --git a/docs/u_e-sogo.md b/docs/u_e-sogo.md
new file mode 100644
index 000000000..0fdd4a6e8
--- /dev/null
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@@ -0,0 +1,23 @@
+
+SOGo is used for accessing your mails via a webbrowser, adding and sharing your contacts or calendars. For a more in-depth documentation on SOGo please visit its [own documentation](http://wiki.sogo.nu/).
+
+## Change Theme
+
+You can change SOGo's theme by editing `data/conf/sogo/sogo.conf`. Per default it uses a blue theme, which you can change e.g. to a green (non-default SOGo-green) theme. More colored themes will be supported in the future.
+After you edited said file you need to restart the SOGO container with `docker-compose restart sogo-mailcow` or via the mailcow UI.
+
+##### Example (`data/conf/sogo/sogo.conf`, line 17):
+```
+before:
+SOGoUIAdditionalJSFiles = (js/theme-blue.js);
+
+after:
+SOGoUIAdditionalJSFiles = (js/theme-green.js);
+
+SOGo default:
+//SOGoUIAdditionalJSFiles
+```
+
+## Change Logo
+You can change SOGo's logo by replacing `data/Dockerfiles/sogo/sogo-full.svg`.
+After you replaced said file you need to rebuild the container by executing `docker-compose build sogo-mailcow` and start it with `docker-compose up -d sogo-mailcow`.