Add blog post by Amir Movahedi
Closes:
@@ -104,6 +104,7 @@ It would be great to hear from you especially if you have any of the above and w
| Blog/repo name and description | Author | Site | Date |
|---------------------------------------------------------------------|--------------|----------|-------------|
| [Functions 101 - SOSC2019](https://cloud-pg.github.io/SOSC2019/events/) | Diego Ciangottini | cloud-pg.github.io | 20-Sep-2019 |
+| [Mail from Slack by OpenFaaS Cloud](https://medium.com/red-gold/mail-from-slack-by-openfaas-6eeee2228cec) | Amir Movahedi | medium.com | 31-Aug-2019 |
| [Deploying Machine Learning models with OpenFaaS with Warm Start](https://medium.com/@dwipam.katariya/deploying-machine-learning-models-with-openfaas-857f1ba0e9c2) | Dwipam Katariya | medium.com | 16-Aug-2019 |
| [How to Develop a Serverless App with OpenFaaS and Okteto](https://medium.com/okteto/how-to-develop-a-serverless-app-with-openfaas-and-okteto-d85435f0eca1) | Ramiro Berrelleza | medium.com | 13-Aug-2019 |
| [Building your own serverless functions with k3s and OpenFaaS on Raspberry Pi](https://blog.codecentric.de/en/2019/08/serverless-functions-k3s-openfaas-raspberry-pi/) | Andreas Muttscheller | codecentric.de | 07-Aug-2019 |
