email integration

* Nest email module with smtp, postmark and console log drivers
* react-email package

.env.example

@@ -21,3 +21,17 @@ AWS_S3_BUCKET=
 AWS_S3_ENDPOINT=
 AWS_S3_URL=
 AWS_S3_USE_PATH_STYLE_ENDPOINT=false
+
+
+# EMAIL drivers: smtp / postmark / log
+MAIL_DRIVER=smtp
+MAIL_HOST=127.0.0.1
+MAIL_PORT=2525
+MAIL_USERNAME=
+MAIL_PASSWORD=
+MAIL_FROM_ADDRESS=hello@example.com
+MAIL_FROM_NAME=
+
+# for postmark driver
+POSTMARK_TOKEN=
+