Merge pull request #7 from drone-plugins/feature/premailer

Added premailer to inline all css rules

sender.go

@@ -3,6 +3,7 @@ package main
 import (
 	"crypto/tls"
 
+	"github.com/aymerick/douceur/inliner"
 	"github.com/drone/drone-go/drone"
 	"github.com/drone/drone-go/template"
 	"github.com/go-gomail/gomail"
@@ -42,7 +43,7 @@ func build(payload *drone.Payload, context *Context) (string, string, string, er
 		return "", "", "", err
 	}
 
-	html, err := template.RenderTrim(
+	body, err := template.RenderTrim(
 		context.Vargs.Template,
 		payload,
 	)
@@ -51,6 +52,12 @@ func build(payload *drone.Payload, context *Context) (string, string, string, er
 		return "", "", "", err
 	}
 
+	html, err := inliner.Inline(body)
+
+	if err != nil {
+		return "", "", "", err
+	}
+
 	plain, err := html2text.FromString(
 		html,
 	)