<username> String type. The user name for authentication. The maximum size of the
parameter is 50 bytes.
<password> String type. The password for authentication. The maximum size of the
parameter is 50 bytes.
<sender_email> String type. The email address of the sender. The maximum size of the parameter
is 50 bytes.
<sender_name> String type. The senderās name that will be shown when the recipients receiving
the email. The maximum size of the parameter is 50 bytes.
<srvaddr> String type. The IP address or domain name of the SMTP server. The maximum
size of the parameter is 50 bytes.
<srvport> Integer type. The port of the SMTP server. The default value is 25. It may be
different depending on different SMTP server. For details, please query the
corresponding mail service provider.
<contextID> Integer type. The PDP context ID. The range is 1-16, and the default value is 1. It
should be activated by AT+QIACT before sending an email. For details, please
refer to Quectel_EC2x&EG9x&EM05_TCP(IP)_AT_Commands_Manual.
<sslctxID> Integer type. SSL context ID used for SMTP. The range is 0-5, and the default
value is 1. Customers should configure the SSL parameters by AT+QSSLCFG.
For details, please refer to Quectel_EC2x&EG9x&EM05_SSL_AT_Commands
_Manual.
<ssltype> Integer type. Configure the SSL type. Please choose the SSL type according to
the mail service provider, since some SMTP servers do not support sending email
without SSL.
0 Without SSL
1 SSL
2 STARTTLS
<err> Integer type. The error code of the operation. Please refer to Chapter 5.
2.2. AT+QSMTPDST Add or Delete Recipients