diff --git a/README.md b/README.md
index 3d99455..a8cd5f4 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,12 @@ Responsive templates for email signatures.
 # Preview
 Here's an example of what's inside:
 
-
 ![Signature preview](http://danmind.ru/img/fadeit-sign.png)
 
 
-There are a few other variations too, but they need some polishing.
\ No newline at end of file
+There are a few other variations too, but they need some polishing.
+
+# Usage with different e-mail clients
+
+## Thunderbird
+There are several Thunderbird plugins which can automatically insert signatures when composing e-mails. We recommend [SmartTemplate4](https://addons.mozilla.org/en-us/thunderbird/addon/smarttemplate4) as one of the options. It can use different templates for new e-mails, replies and forwarded e-mails.