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+##  INTEGRATING SENDGRID SMTP WITH APPWRITE
+
+### PREREQUISITES
+
+- Sendgird's email sending API key ([how to create api key](https://sendgrid.com/docs/ui/account-and-settings/api-keys/#creating-an-api-key))
+- Apprwrite repo/server locally
+
+### INTEGRATION
+
+- In root directory of repo, `.env` file is where you have to put your credentials of external smtp
+- Edit the folowing values in `.env` file :
+  - `_APP_SYSTEM_EMAIL_NAME=<FROM_NAME_YOU_WANT_TO_USE>`
+  - `_APP_SYSTEM_EMAIL_ADDRESS=<FROM_EMAIL_YOU_WANT_TO_USE>`(make sure email you want to use is authenticated from your sendgrid account)
+  - `_APP_SMTP_HOST=smtp.sendgrid.net`
+  - `_APP_SMTP_PORT=465`
+  - `_APP_SMTP_SECURE=ssl` (If you want to use tls, change `_APP_SMTP_PORT` to 587)
+  - `_APP_SMTP_USERNAME=apikey`
+  - `_APP_SMTP_PASSWORD=<API_KEY_YOU_GOT_FROM_SENDGRID>`
+  
+-  build/re-build with `docker-compose build appwrite-worker-mails && docker-compose up -d`
+
+### DEBUG 
+
+- check logs using `docker-compose logs appwrite-worker-mails`
+- check vars used by smtp using `docker-compose exec appwrite-worker-mails vars`
+- check your sendgrid's activity dashboard for more details