diff --git a/README.md b/README.md
index 13a1e15..19339ab 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,8 @@ Sends out newsletters
 2. Create an email file
     * Name it whatever you want.
     * The first line of the file will be used as {{ subject }} in the postmark template.
-    * The rest of the file will be used as {{{ content_body }}}.
+    * The second line of the file, if not empty, will be used as {{ subtitle }} in the postmark template.
+    * After a blank line, the rest of the file will be used as {{{ content_body }}}.
     * Newlines between the subject and body will be removed.
 
 3. Do a test run
diff --git a/main.go b/main.go
index cbf98a6..2b8ab08 100644
--- a/main.go
+++ b/main.go
@@ -75,14 +75,19 @@ func verifyConfig() (Config, bool) {
 	return config, valid
 }
 
-func parseMailFile(contents string) (subject string, body string, valid bool) {
+func parseMailFile(contents string) (subject string, subtitle string, body string, valid bool) {
 	valid = false
-	parts := strings.SplitN(string(contents), "\n", 2)
+	parts := strings.SplitN(string(contents), "\n\n", 2)
 	if len(parts) < 2 {
 		fmt.Printf("File does not contain subject and body\n")
 		return
 	}
-	subject = strings.TrimSpace(parts[0])
+	subjectAndSubtitle := strings.TrimSpace(parts[0])
+	subjectParts := strings.SplitN(subjectAndSubtitle, "\n", 2)
+	subject = subjectParts[0]
+	if len(subjectParts) > 1 {
+		subtitle = subjectParts[1]
+	}
 	rawBody := strings.Trim(parts[1], "\n")
 	if subject == "" {
 		fmt.Printf("Subject is empty\n")
@@ -108,7 +113,7 @@ func sendTest(newsletterFile string) {
 		}
 		return
 	}
-	subject, body, valid := parseMailFile(string(contents))
+	subject, subtitle, body, valid := parseMailFile(string(contents))
 	if !valid {
 		return
 	}
@@ -117,7 +122,7 @@ func sendTest(newsletterFile string) {
 	logFile := newsletterFile + "." + time.Now().Format("20060102T150405") + ".test.log"
 	os.Truncate(trackingFile, 0)
 
-	blastMail(cfg, logFile, trackingFile, audience, subject, body)
+	blastMail(cfg, logFile, trackingFile, audience, subject, subtitle, body)
 
 	sha1File := newsletterFile + ".sha1"
 	sum := sha1.Sum(contents)
@@ -139,7 +144,7 @@ func sendNews(audienceFile string, newsletterFile string) {
 		}
 		return
 	}
-	subject, body, valid := parseMailFile(string(contents))
+	subject, subtitle, body, valid := parseMailFile(string(contents))
 	if !valid {
 		return
 	}
@@ -180,10 +185,10 @@ func sendNews(audienceFile string, newsletterFile string) {
 	trackingFile := newsletterFile + ".track"
 	logFile := newsletterFile + "." + time.Now().Format("20060102T150405") + ".log"
 
-	blastMail(cfg, logFile, trackingFile, audience, subject, body)
+	blastMail(cfg, logFile, trackingFile, audience, subject, subtitle, body)
 }
 
-func blastMail(cfg Config, logFile string, trackingFile string, audience []string, subject string, body string) {
+func blastMail(cfg Config, logFile string, trackingFile string, audience []string, subject, subtitle, body string) {
 	log, err := os.OpenFile(logFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
 	if err != nil {
 		fmt.Printf("Can't open log file %s: %v\n", logFile, err)
@@ -218,7 +223,7 @@ func blastMail(cfg Config, logFile string, trackingFile string, audience []strin
 		if !found {
 			group = append(group, a)
 			if len(group) == cfg.BatchSize {
-				results, err := sendMail(cfg, group, subject, body)
+				results, err := sendMail(cfg, group, subject, subtitle, body)
 				if err != nil {
 					fmt.Printf("Error while sending mail: %v\n", err)
 					return
@@ -233,7 +238,7 @@ func blastMail(cfg Config, logFile string, trackingFile string, audience []strin
 		}
 	}
 	if len(group) > 0 {
-		results, err := sendMail(cfg, group, subject, body)
+		results, err := sendMail(cfg, group, subject, subtitle, body)
 		if err != nil {
 			fmt.Printf("Error while sending mail: %v\n", err)
 			return
@@ -249,8 +254,9 @@ func blastMail(cfg Config, logFile string, trackingFile string, audience []strin
 var postmarkClient = http.Client{}
 
 type PostmarkTemplateModel struct {
-	Subject string `json:"subject"`
-	Body    string `json:"content_body"`
+	Subject  string `json:"subject"`
+	Subtitle string `json:"subtitle,omitempty"`
+	Body     string `json:"content_body"`
 }
 
 type PostmarkTemplateMessage struct {
@@ -272,7 +278,7 @@ type PostmarkBatchResult struct {
 	Message   string `json:"Message"`
 }
 
-func sendMail(cfg Config, recipients []string, subject, contentHtml string) ([]PostmarkBatchResult, error) {
+func sendMail(cfg Config, recipients []string, subject, subtitle, contentHtml string) ([]PostmarkBatchResult, error) {
 	fmt.Printf("Sending batch [%d recipients]...", len(recipients))
 	from := cfg.FromAddress
 	if cfg.FromName != "" {
@@ -285,8 +291,9 @@ func sendMail(cfg Config, recipients []string, subject, contentHtml string) ([]P
 			To:            r,
 			TemplateAlias: cfg.PostmarkTemplateAlias,
 			TemplateModel: PostmarkTemplateModel{
-				Subject: subject,
-				Body:    contentHtml,
+				Subject:  subject,
+				Subtitle: subtitle,
+				Body:     contentHtml,
 			},
 			TrackOpens:    false,
 			TrackLinks:    "None",
@@ -342,7 +349,8 @@ func main() {
 	2. Create an email file
 		* Name it whatever you want.
 		* The first line of the file will be used as {{ subject }} in the postmark template.
-		* The rest of the file will be used as {{{ content_body }}}.
+		* The second line of the file, if not empty, will be used as {{ subtitle }} in the postmark template.
+		* After a blank line, the rest of the file will be used as {{{ content_body }}}.
 		* Newlines between the subject and body will be removed.
 
 	3. Do a test run