Add AnonAddy to Webmail clients

AnonAddy is an open source email forwarding service that can be used to create unlimited email aliases. It is built using Laravel, Vue.js and Tailwind CSS.

README.md

@@ -372,6 +372,7 @@ _Mailing lists servers and mass mailing software - one message to many recipient
 #### Webmail clients
 
 - [Afterlogic WebMail Lite](http://www.afterlogic.org/webmail-lite) - Fast and easy-to-use webmail front-end for your existing IMAP mail server, Plesk or cPanel. ([Demo](https://lite.afterlogic.com/), [Source Code](https://github.com/afterlogic/webmail-lite)) `AGPL-3.0` `PHP`
+- [AnonAddy](https://anonaddy.com) - Open source email forwarding service for creating aliases. ([Source Code](https://github.com/anonaddy/anonaddy)) `MIT` `PHP`
 - [Cypht](http://cypht.org/index.html) - Feed reader for your email accounts. ([Source Code](https://github.com/jasonmunro/hm3)) `GPL-2.0` `PHP`
 - [IMP](https://www.horde.org/apps/imp/) - HORDE application that provides webmail access to IMAP and POP3 accounts. ([Demo](http://demo.horde.org/), [Source Code](https://www.horde.org/download/imp)) `GPL-2.0` `PHP`
 - [MailCare](https://mailcare.io) - Open source disposable email address service. ([Source Code](https://github.com/mailcare/mailcare)) `MIT` `PHP`