feat: email abstract

composer.json

@@ -35,7 +35,6 @@
         "wpdesk/wp-view": "^2.0",
         "wpdesk/wp-notice": "^3.1.1",
         "wpdesk/wp-builder": "^2.0",
-        "pelago/emogrifier": "7.0",
         "ext-json": "*"
     },
     "require-dev": {
@@ -43,7 +42,8 @@
         "mockery/mockery": "*",
         "phpunit/phpunit": "<7",
         "wp-coding-standards/wpcs": "^2.3.0",
-        "squizlabs/php_codesniffer": "^3.0.2"
+        "squizlabs/php_codesniffer": "^3.0.2",
+        "pelago/emogrifier": "7.0"
     },
     "autoload": {
         "psr-4": {