add tempmail.so

Introducing Tempmail.so – Your Ultimate Temporary Email Service!

README.md

@@ -774,6 +774,7 @@
 - [Todo DEV](https://github.com/IanLuan/TodoDev) - A simple Todo App made for developers with Vuejs, Vuetify and the powerful Firebase.
 - [36 Pixels](https://www.36pixels.fr/) - French agency website made with vue.js
 - [temp-mail.io](https://temp-mail.io/) - Disposable temporary email service.
+- [tempmail.so](https://tempmail.so) - Disposable temporary email service.
 - [Narrandum](https://narrandum.com) - Customer journey mapping tool built using Vue.js, Vuetify, and Feathersjs
 - [Keep Formula](https://keepformula.com/) - Keep Formula is a simple app to make your calculations easier.
 - [goonlinetools.com](https://goonlinetools.com/) - 100% Free Online Tools site.