diff --git a/plugin/src/main/groovy/org/bot4j/telegram/message/MessageFactory.java b/plugin/src/main/groovy/org/bot4j/telegram/message/MessageFactory.java
index e64985a..0582970 100644
--- a/plugin/src/main/groovy/org/bot4j/telegram/message/MessageFactory.java
+++ b/plugin/src/main/groovy/org/bot4j/telegram/message/MessageFactory.java
@@ -5,7 +5,7 @@ public abstract class MessageFactory {
     /**
      * Create a MarkdownBuilder instance.
      *
-     * @return MarkdownBuilder instance
+     * @return MarkdownBuilder instance, class {@link MarkdownBuilder}
      */
     public static MarkdownBuilder markdown() {
         return new MarkdownBuilder();
@@ -14,9 +14,27 @@ public static MarkdownBuilder markdown() {
     /**
      * Create a HtmlBuilder instance.
      *
-     * @return HtmlBuilder instance
+     * @return HtmlBuilder instance, class {@link HtmlBuilder}
      */
     public static HtmlBuilder html() {
         return new HtmlBuilder();
     }
+
+    /**
+     * Create a HttpBuilder instance.
+     *
+     * @return HttpBuilder instance, class {@link HttpBuilder}
+     */
+    public static HttpBuilder http() {
+        return new HttpBuilder();
+    }
+
+    /**
+     * Create a HttpBuilder instance.
+     *
+     * @return HttpBuilder instance, class {@link NotifyBuilder}
+     */
+    public static NotifyBuilder reveal() {
+        return new NotifyBuilder();
+    }
 }
diff --git a/plugin/src/main/groovy/org/bot4j/telegram/message/NotifyBuilder.java b/plugin/src/main/groovy/org/bot4j/telegram/message/NotifyBuilder.java
new file mode 100644
index 0000000..702e752
--- /dev/null
+++ b/plugin/src/main/groovy/org/bot4j/telegram/message/NotifyBuilder.java
@@ -0,0 +1,34 @@
+package org.bot4j.telegram.message;
+
+import org.alpha4j.common.Map4j;
+
+public class NotifyBuilder extends MarkdownBuilder {
+    protected final Map4j<String, Object> placeholders;
+
+    public NotifyBuilder() {
+        super();
+        this.placeholders = new Map4j<>();
+    }
+
+    protected static class Index {
+        public static final String CAUSE_INDEX = "cause_index";
+    }
+
+    public NotifyBuilder cause(Throwable e) {
+        if (e == null) {
+            return this;
+        }
+        this.placeholders.put(Index.CAUSE_INDEX, e.getMessage());
+        return this;
+    }
+
+    @Override
+    public String toString() {
+        if (this.placeholders.containsKey(Index.CAUSE_INDEX)) {
+            this.line().bold("Cause:")
+                    .preformatted("bash", (String) this.placeholders.get(Index.CAUSE_INDEX))
+                    .line();
+        }
+        return super.toString();
+    }
+}