diff --git a/readme.md b/readme.md
index 74aa75a..6266f0c 100644
--- a/readme.md
+++ b/readme.md
@@ -24,11 +24,9 @@
 
 ### 安装使用
 
-1.git clone https://github.com/taoshihan1991/imaptool.git
+1.在$GOPATH的src/github.com下， git clone https://github.com/taoshihan1991/imaptool.git
 
-2.进入目录执行 go mod tidy
+2.源码运行 go run server.go
 
-3.源码运行 go run server.go
-
-4.源码打包 go build server.go
+3.源码打包 go build server.go
 
diff --git a/tools/imap.go b/tools/imap.go
index 2dcf9cb..db19ce8 100644
--- a/tools/imap.go
+++ b/tools/imap.go
@@ -179,15 +179,15 @@ func GetMessage(server string, email string, password string, folder string, id
 	if r == nil {
 		log.Fatal("Server didn't returned message body")
 	}
+	var mailitem = new(MailItem)
 
 	// Create a new mail reader
 	mr, err := mail.CreateReader(r)
+
 	if err != nil {
-		//log.Fatal(err)
+		return mailitem
 	}
 
-	var mailitem = new(MailItem)
-
 	// Print some info about the message
 	header := mr.Header
 	date, _ := header.Date()
@@ -226,9 +226,9 @@ func GetMessage(server string, email string, password string, folder string, id
 	log.Println("Subject:", s)
 	mailitem.Subject = s
 	// Process each message's part
-	var bodyMap=make(map[string]string)
-	bodyMap["text/plain"]= ""
-	bodyMap["text/html"]= ""
+	var bodyMap = make(map[string]string)
+	bodyMap["text/plain"] = ""
+	bodyMap["text/html"] = ""
 
 	for {
 		p, err := mr.NextPart()
@@ -242,11 +242,11 @@ func GetMessage(server string, email string, password string, folder string, id
 			// This is the message's text (can be plain-text or HTML)
 
 			b, _ := ioutil.ReadAll(p.Body)
-			ct:=p.Header.Get("Content-Type")
-			if strings.Contains(ct,"text/plain"){
-				bodyMap["text/plain"]+=Encoding(string(b),ct)
-			}else{
-				bodyMap["text/html"]+=Encoding(string(b),ct)
+			ct := p.Header.Get("Content-Type")
+			if strings.Contains(ct, "text/plain") {
+				bodyMap["text/plain"] += Encoding(string(b), ct)
+			} else {
+				bodyMap["text/html"] += Encoding(string(b), ct)
 			}
 			//body,_:=dec.Decode(string(b))
 		case *mail.AttachmentHeader:
@@ -256,10 +256,10 @@ func GetMessage(server string, email string, password string, folder string, id
 		}
 
 	}
-	if bodyMap["text/html"]!=""{
-		mailitem.Body =bodyMap["text/html"]
-	}else{
-		mailitem.Body =bodyMap["text/plain"]
+	if bodyMap["text/html"] != "" {
+		mailitem.Body = bodyMap["text/html"]
+	} else {
+		mailitem.Body = bodyMap["text/plain"]
 	}
 	//log.Println(mailitem.Body)
 	return mailitem
diff --git a/imaptool.go b/tools/imaptool.go
similarity index 99%
rename from imaptool.go
rename to tools/imaptool.go
index 216467f..d382f9b 100644
--- a/imaptool.go
+++ b/tools/imaptool.go
@@ -1,4 +1,4 @@
-package main
+package tools
 
 import (
 	"bufio"
@@ -23,7 +23,7 @@ var (
 	folders                 map[int]string
 )
 
-func main() {
+func testmain() {
 
 	//获取参数中的数据
 	flag.StringVar(&server, "server", "", "imap服务地址(包含端口)")