Quectel EC2 Series - Contents; Table of Contents

LTE Module Series
EC2x&EG9x&EM05 SMTP AT Commands Manual
EC2x&EG9x&EM05_SMTP_AT_Commands_Manual 3 / 31
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 4
1 Introduction .......................................................................................................................................... 5
1.1. Introduction about SSL Type ................................................................................................... 5
1.2. The Process of Sending Email ................................................................................................ 6
1.3. Description of Data Mode ........................................................................................................ 7
2 Description of SMTP AT Commands ................................................................................................. 8
2.1. AT+QSMTPCFG Configure Parameters for SMTP Server .................................................. 8
2.2. AT+QSMTPDST Add or Delete Recipients ........................................................................ 10
2.3. AT+QSMTPSUB Edit the Subject of an Email ................................................................... 12
2.4. AT+QSMTPBODY Edit the Body of an Email ..................................................................... 13
2.5. AT+QSMTPATT Add or Delete Attachments for an Email .................................................. 15
2.6. AT+QSMTPCLR Clear the Content of an Email ................................................................. 16
2.7. AT+QSMTPPUT Send an Email ......................................................................................... 17
3 Examples ............................................................................................................................................ 19
3.1. Send an Email without SSL ................................................................................................... 19
3.2. Send an Email with SSL ........................................................................................................ 21
3.3. Send an Email with STARTTLS ............................................................................................ 22
4 Error Handling .................................................................................................................................... 24
4.1. Executing SMTP AT Command Fails .................................................................................... 24
4.2. PDP Activation Fails .............................................................................................................. 24
4.3. DNS Parse Fails .................................................................................................................... 25
4.4. Error Response of AT+QSMTPPUT ...................................................................................... 25
5 Summary of Error Codes .................................................................................................................. 26
6 Summary of SMTP Protocol Error Codes ....................................................................................... 28
7 Appendix A References ..................................................................................................................... 30