LTE  Module  Series 
 EC2x&EG9x&EM05  SMTP  AT  Commands  Manual 
 
EC2x&EG9x&EM05_SMTP_AT_Commands_Manual                                                                   16 / 31 
   
 
 
Example 
//Customers can add attachments from RAM. After the email is sent, the file uploaded to RAM should be 
deleted by AT+QFDEL. The detailed example is shown as follows: 
AT+QFUPL="RAM:test.txt",200,300,1              //Upload a file to RAM. The file will be saved as “test.txt” 
and the maximum size of file is 200 bytes. 300 indicates 
timeout, and 1 indicates ACK mode. For details, please 
refer  to  Quectel_EC2x&EG9x&EM05_FILE_AT_ 
Commands_Manual. 
CONNECT   
<Input 200 bytes data> 
+QFUPL: 200,707 
 
OK 
AT+QFLST="RAM:*" 
+QFLST: "RAM:test.txt",200 
 
OK 
AT+QSMTPATT=1,1,"RAM:test.txt" //Add an attachment for email and the file index is 1. 
OK 
AT+QSMTPATT?                                                   //Query the attachments. 
+QSMTPATT: 1,"RAM:test.txt",200 
 
OK 
//Delete all attachments. 
AT+QSMTPATT=0               //Delete all attachments for the email. 
OK 
AT+QSMTPATT?                                                   //Query the attachments. 
OK 
 
2.6. AT+QSMTPCLR    Clear the Content of an Email 
 
AT+QSMTPCLR will clear all the configurations of AT+QSMTPDST, AT+QSMTPSUB, AT+QSMTPBODY 
and AT+QSMTPATT. 
 
 
 
<file_size>      Integer type. The size of the attachment. Unit: byte. 
<err>          Integer type. The error code of the operation. Please refer to Chapter 5.