diff --git a/README.md b/README.md
index 98b1c4d2..ee0c99a6 100644
--- a/README.md
+++ b/README.md
@@ -428,6 +428,7 @@ Say thanks!
 <td>Gojek<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/gojek.svg" width="125" title="Gojek" /><br>376 Bytes</td>
 <td>Amazon Alexa<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/amazon_alexa.svg" width="125" title="Amazon Alexa" /><br>393 Bytes</td>
 <td>Finder<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/finder.svg" width="125" title="Finder" /><br>780 Bytes</td>
+<td>Roundcube<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/roundcube.svg" width="125" title="Roundcube"/><br>838 Bytes</td>
 </tr>
 </table>
 
diff --git a/images/reference/index.md b/images/reference/index.md
index 91896368..1fbdb30d 100644
--- a/images/reference/index.md
+++ b/images/reference/index.md
@@ -232,3 +232,4 @@ Where possible this links to the organisation's brand guidelines page.
 | <img src="/images/svg/kodi.svg" width="256"/> | <img src="/images/reference/kodi.svg" width="256"/> | https://kodi.tv/ |
 | <img src="/images/svg/openvpn.svg" width="256"/> | <img src="/images/reference/openvpn.svg" width="256"/> | https://openvpn.net/ |
 | <img src="/images/svg/glitch.svg" width="256"/> | <img src="/images/reference/glitch-fish-big.png" width="256"/> | https://glitch.com/about/press/ |
+| <img src="/images/svg/roundcube.svg" width="256" /> | <img src="/images/reference/roundcube.svg" width="256" /> | https://roundcube.net/images/roundcube_logo_icon.svg |
diff --git a/images/reference/roundcube.svg b/images/reference/roundcube.svg
new file mode 100644
index 00000000..1f50dd8a
--- /dev/null
+++ b/images/reference/roundcube.svg
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="9.14 141.8 573.65 573.65">
+<style type="text/css">
+.st0{fill-rule:evenodd;clip-rule:evenodd;fill:#404F54;}
+.st1{fill-rule:evenodd;clip-rule:evenodd;fill:#E5E5E5;}
+.st2{fill-rule:evenodd;clip-rule:evenodd;fill:#CCCCCC;}
+.st3{fill-rule:evenodd;clip-rule:evenodd;fill:#37BEFF;}
+</style>
+<polygon class="st3" points="582.79,549.77 295.96,384.1 295.96,207.27 582.79,372.95 "/>
+<polygon class="st0" points="9.14,549.77 295.96,384.1 295.96,207.27 9.14,372.95 "/>
+<path class="st2" d="M295.96,141.8c109.56,0,198.41,88.85,198.41,198.41c0,109.56-88.85,198.41-198.41,198.41 c-109.56,0-198.41-88.85-198.41-198.41C97.55,230.65,186.4,141.8,295.96,141.8"/>
+<path class="st1" d="M295.96,141.8c109.6,0,198.48,88.85,198.48,198.41c0,109.56-88.88,198.41-198.48,198.41	c-62.91-42.34-88.94-127.64-88.94-198.3S233.05,184.22,295.96,141.8"/>
+<polygon class="st3" points="582.79,372.95 295.96,538.62 295.96,715.45 582.79,549.77 "/>
+<polygon class="st0" points="9.14,372.95 295.96,538.62 295.96,715.45 9.14,549.77 "/>
+</svg>
diff --git a/images/svg/roundcube.svg b/images/svg/roundcube.svg
new file mode 100644
index 00000000..34b9e9c8
--- /dev/null
+++ b/images/svg/roundcube.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+aria-label="Roundcube" role="img"
+viewBox="0 0 512 512"><rect
+width="512" height="512"
+rx="15%"
+fill="#fff"/><g fill-rule="evenodd"><path d="M255.997 107.626L448 218.68v118.523l-192.003-111.05z" fill="#37beff"/><path d="M255.997 107.626L64 218.68v118.523l191.997-111.05z" fill="#404f54"/><path d="M255.997 63.74c73.34 0 132.815 59.556 132.815 132.994S329.336 329.73 255.997 329.73 123.18 270.173 123.18 196.735 182.657 63.74 255.997 63.74" fill="#ccc"/><path d="M255.997 63.74c73.366 0 132.862 59.556 132.862 132.994S329.363 329.73 255.997 329.73c-42.112-28.38-59.536-85.557-59.536-132.92S213.885 92.175 255.997 63.74" fill="#e5e5e5"/><path d="M255.997 448.26L448 337.204V218.68L255.997 329.73z" fill="#37beff"/><path d="M255.997 448.26L64 337.204V218.68l191.997 111.05z" fill="#404f54"/></g></svg>
\ No newline at end of file