diff --git a/parsemail.go b/parsemail.go
index 996e357..d37e82c 100644
--- a/parsemail.go
+++ b/parsemail.go
@@ -31,11 +31,13 @@
 		return
 	}
 
-	contentType, params, err := parseContentType(msg.Header.Get("Content-Type"))
+	email.ContentType = msg.Header.Get("Content-Type")
+	contentType, params, err := parseContentType(email.ContentType)
 	if err != nil {
 		return
 	}
 
+
 	switch contentType {
 	case contentTypeMultipartMixed:
 		email.TextBody, email.HTMLBody, email.Attachments, email.EmbeddedFiles, err = parseMultipartMixed(msg.Body, params["boundary"])
@@ -48,7 +50,7 @@
 		message, _ := ioutil.ReadAll(msg.Body)
 		email.HTMLBody = strings.TrimSuffix(string(message[:]), "\n")
 	default:
-		err = fmt.Errorf("Unknown top level mime type: %s", contentType)
+		email.Content, err = decodeContent(msg.Body, msg.Header.Get("Content-Transfer-Encoding"))
 	}
 
 	return
@@ -291,29 +293,13 @@
 	return mail.Header(parsedHeader), nil
 }
 
-func decodePartData(part *multipart.Part) (io.Reader, error) {
-	encoding := part.Header.Get("Content-Transfer-Encoding")
-
-	if strings.EqualFold(encoding, "base64") {
-		dr := base64.NewDecoder(base64.StdEncoding, part)
-		dd, err := ioutil.ReadAll(dr)
-		if err != nil {
-			return nil, err
-		}
-
-		return bytes.NewReader(dd), nil
-	}
-
-	return nil, fmt.Errorf("Unknown encoding: %s", encoding)
-}
-
 func isEmbeddedFile(part *multipart.Part) bool {
 	return part.Header.Get("Content-Transfer-Encoding") != ""
 }
 
 func decodeEmbeddedFile(part *multipart.Part) (ef EmbeddedFile, err error) {
 	cid := decodeMimeSentence(part.Header.Get("Content-Id"))
-	decoded, err := decodePartData(part)
+	decoded, err := decodeContent(part, part.Header.Get("Content-Transfer-Encoding"))
 	if err != nil {
 		return
 	}
@@ -331,7 +317,7 @@
 
 func decodeAttachment(part *multipart.Part) (at Attachment, err error) {
 	filename := decodeMimeSentence(part.FileName())
-	decoded, err := decodePartData(part)
+	decoded, err := decodeContent(part, part.Header.Get("Content-Transfer-Encoding"))
 	if err != nil {
 		return
 	}
@@ -343,6 +329,23 @@
 	return
 }
 
+func decodeContent(content io.Reader, encoding string) (io.Reader, error) {
+	switch encoding {
+	case "base64":
+		decoded := base64.NewDecoder(base64.StdEncoding, content)
+		b, err := ioutil.ReadAll(decoded)
+		if err != nil {
+			return nil, err
+		}
+
+		return bytes.NewReader(b), nil
+	case "":
+		return content, nil
+	default:
+		return nil, fmt.Errorf("unknown encoding: %s", encoding)
+	}
+}
+
 type headerParser struct {
 	header *mail.Header
 	err    error
@@ -450,9 +453,12 @@
 	ResentBcc       []*mail.Address
 	ResentMessageID string
 
+	ContentType string
+	Content io.Reader
+
 	HTMLBody string
 	TextBody string
 
 	Attachments   []Attachment
 	EmbeddedFiles []EmbeddedFile
-}
+}
\ No newline at end of file
diff --git a/parsemail_test.go b/parsemail_test.go
index e0457bb..6796a29 100644
--- a/parsemail_test.go
+++ b/parsemail_test.go
@@ -13,6 +13,8 @@
 	var testData = map[int]struct {
 		mailData string
 
+		contentType     string
+		content         string
 		subject         string
 		date            time.Time
 		from            []mail.Address
@@ -182,6 +184,8 @@
 		},
 		6: {
 			mailData: data1,
+			contentType: `multipart/mixed; boundary=f403045f1dcc043a44054c8e6bbf`,
+			content: "",
 			subject:  "Peter Paholík",
 			from: []mail.Address{
 				{
@@ -208,6 +212,8 @@
 		},
 		7: {
 			mailData: data2,
+			contentType: `multipart/alternative; boundary="------------C70C0458A558E585ACB75FB4"`,
+			content: "",
 			subject:  "Re: Test Subject 2",
 			from: []mail.Address{
 				{
@@ -245,16 +251,49 @@
 				},
 			},
 		},
+		8: {
+			mailData: imageContentExample,
+			subject:  "Saying Hello",
+			from: []mail.Address{
+				{
+					Name:    "John Doe",
+					Address: "jdoe@machine.example",
+				},
+			},
+			to: []mail.Address{
+				{
+					Name:    "Mary Smith",
+					Address: "mary@example.net",
+				},
+			},
+			sender: mail.Address{
+				Name:    "Michael Jones",
+				Address: "mjones@machine.example",
+			},
+			messageID: "1234@local.machine.example",
+			date:      parseDate("Fri, 21 Nov 1997 09:55:06 -0600"),
+			contentType: `image/jpeg; x-unix-mode=0644; name="image.gif"`,
+			content: `GIF89a;`,
+		},
 	}
 
 	for index, td := range testData {
-		m, err := mail.ReadMessage(strings.NewReader(td.mailData))
+		e, err := Parse(strings.NewReader(td.mailData))
 		if err != nil {
 			t.Error(err)
 		}
-		e, err := Parse(m)
-		if err != nil {
-			t.Error(err)
+
+		if td.contentType != e.ContentType {
+			t.Errorf("[Test Case %v] Wrong content type. Expected: %s, Got: %s", index, td.contentType, e.ContentType)
+		}
+
+		if td.content != "" {
+			b, err := ioutil.ReadAll(e.Content)
+			if err != nil {
+				t.Error(err)
+			} else if td.content != string(b) {
+				t.Errorf("[Test Case %v] Wrong content. Expected: %s, Got: %s", index, td.content, string(b))
+			}
 		}
 
 		if td.subject != e.Subject {
@@ -670,3 +709,16 @@
 
 This is a message just to say hello.
 So, "Hello".`
+
+var imageContentExample = `From: John Doe <jdoe@machine.example>
+Sender: Michael Jones <mjones@machine.example>
+To: Mary Smith <mary@example.net>
+Subject: Saying Hello
+Date: Fri, 21 Nov 1997 09:55:06 -0600
+Message-ID: <1234@local.machine.example>
+Content-Type: image/jpeg;
+	x-unix-mode=0644;
+	name="image.gif"
+Content-Transfer-Encoding: base64
+
+R0lGODlhAQE7`