diff --git a/include/znc/Client.h b/include/znc/Client.h
index 597ebc52..07f3cc9b 100644
--- a/include/znc/Client.h
+++ b/include/znc/Client.h
@@ -258,6 +258,7 @@ private:
 	void EchoMessage(const CMessage& Message);
 
 	std::set<CChan*> MatchChans(const CString& sPatterns) const;
+	unsigned int AttachChans(const std::set<CChan*>& sChans);
 	unsigned int DetachChans(const std::set<CChan*>& sChans);
 
 protected:
diff --git a/src/Client.cpp b/src/Client.cpp
index ae8e0a68..8fbaf707 100644
--- a/src/Client.cpp
+++ b/src/Client.cpp
@@ -349,7 +349,22 @@ void CClient::ReadLine(const CString& sData) {
 		return;
 	}
 
-	if (sCommand.Equals("DETACH")) {
+	if (sCommand.Equals("ATTACH")) {
+		CString sPatterns = sLine.Token(1, true);
+
+		if (sPatterns.empty()) {
+			PutStatusNotice("Usage: /attach <#chans|queries>");
+			return;
+		}
+
+		set<CChan*> sChans = MatchChans(sPatterns);
+		unsigned int uAttachedChans = AttachChans(sChans);
+
+		PutStatusNotice("There were [" + CString(sChans.size()) + "] channels matching [" + sPatterns + "]");
+		PutStatusNotice("Attached [" + CString(uAttachedChans) + "] channels");
+
+		return;
+	} else if (sCommand.Equals("DETACH")) {
 		if (!m_pNetwork) {
 			return;
 		}
@@ -1061,6 +1076,18 @@ set<CChan*> CClient::MatchChans(const CString& sPatterns) const
 	return sChans;
 }
 
+unsigned int CClient::AttachChans(const std::set<CChan*>& sChans)
+{
+	unsigned int uAttached = 0;
+	for (CChan* pChan : sChans) {
+		if (!pChan->IsDetached())
+			continue;
+		uAttached++;
+		pChan->AttachUser();
+	}
+	return uAttached;
+}
+
 unsigned int CClient::DetachChans(const std::set<CChan*>& sChans)
 {
 	unsigned int uDetached = 0;
diff --git a/src/ClientCommand.cpp b/src/ClientCommand.cpp
index 1ce7a1b0..77a43527 100644
--- a/src/ClientCommand.cpp
+++ b/src/ClientCommand.cpp
@@ -107,6 +107,24 @@ void CClient::UserCommand(CString& sLine) {
 		}
 
 		PutStatus(Table);
+	} else if (sCommand.Equals("ATTACH")) {
+		if (!m_pNetwork) {
+			PutStatus("You must be connected with a network to use this command");
+			return;
+		}
+
+		CString sPatterns = sLine.Token(1, true);
+
+		if (sPatterns.empty()) {
+			PutStatus("Usage: Attach <#chans|queries>");
+			return;
+		}
+
+		set<CChan*> sChans = MatchChans(sPatterns);
+		unsigned int uAttachedChans = AttachChans(sChans);
+
+		PutStatus("There were [" + CString(sChans.size()) + "] channels  matching [" + sPatterns + "]");
+		PutStatus("Attached [" + CString(uAttachedChans) + "] channels");
 	} else if (sCommand.Equals("DETACH")) {
 		if (!m_pNetwork) {
 			PutStatus("You must be connected with a network to use this command");
@@ -1565,6 +1583,7 @@ void CClient::HelpUser(const CString& sFilter) {
 	AddCommandHelp(Table, "ShowChan", "<#chan>", "Show channel details", sFilter);
 	AddCommandHelp(Table, "EnableChan", "<#chans>", "Enable channels", sFilter);
 	AddCommandHelp(Table, "DisableChan", "<#chans>", "Disable channels", sFilter);
+	AddCommandHelp(Table, "Attach", "<#chans>", "Attach to channels", sFilter);
 	AddCommandHelp(Table, "Detach", "<#chans>", "Detach from channels", sFilter);
 	AddCommandHelp(Table, "Topics", "", "Show topics in all your channels", sFilter);