1 files changed, 13 insertions, 0 deletions
diff --git a/matrix-specification/Enums/MessageFormat.php b/matrix-specification/Enums/MessageFormat.php
new file mode 100644
index 0000000..eb543a0
--- /dev/null
+++ b/matrix-specification/Enums/MessageFormat.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace Matrix\Enums;
+
+enum MessageFormat: string
+{
+  case HTML = "org.matrix.custom.html";
+
+  public function jsonSerialize(): string
+  {
+    return $this->value;
+  }
+}