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Part 1 – AT Commands for All Universal IP Devices Chapter 2 – SMTP AT Commands
Universal IP AT Commands Reference Guide (Document S000457K) 20
#DOMAIN – Set Domain Name of the Sender
Description: When sending an email message, the TCP/IP stack software must provide the SMTP server with
the domain name of the sender. In some cases, this domain name may be different from the
domain name included in the sender's email address.
Syntax: AT#DOMAIN="<value>"
AT#DOMAIN? Read or display current value (also AT#VSMTP or AT#VALL).
Values: Alphanumeric ASCII text string up to 120 characters. No default.
#RECiADD – Set Email Address
Description: To send email messages, the TCP/IP stack software must know the e-mail address of the
recipient. This email address will appear in the email header sent by the TCP/IP stack software,
in the field ‘To:‘
The RECi parameter can hold a maximum of 10 email addresses, each email address being at
the most 120 characters long.
Syntax: AT#RECi="<Value>"
AT#RECi? (replace i with 1, 2, or 3) or AT#VMAILi, AT#VALL
Values: RECi (i = 1, 2, or 3)
Alphanumeric ASCII text string up to 120 characters. The address must be provided in literal
format (for instance xxxxx@company.com). No default.
Setting One Email Address / Resetting the Parameter / Getting:
Set value / reset the parameter: AT#RECi="<Value>" (replace i with 1, 2, or 3)
View value: AT#REC? (replace i with 1, 2, or 3) or AT#VMAILi, AT#VALL
Setting One to Ten Email Address to the RECi Parameter / Resetting the Parameter:
To set 1 to 10 email addresses to the RECi parameter, enter the AT#RECiADD<CR> overwriting
command.
Each email address has to be an alphanumeric ASCII text string, in literal format (for instance,
dev12345678@web.xyz). To add another email address, enter the <CR><LF> pair. To end the
setting, enter the following character: 1A (in ASCII code), generated in a keyboard by CTRL+Z
escape sequence.
Note 1: This command overwrites all previously set email addresses of the RECi parameter.
Note 2: If more than ten addresses are entered, the 11th and subsequent addresses until the end
character will be ignored.
Example: AT#REC1ADD<CR>
Email1@domain.fr<CR><LF>
Email2@domain.com<CR><LF>
<CTRL+Z>
#SUBJi – Set Email Pre-Defined Subject Text
Description: These parameters contain the pre-defined subject text that will be used by the TCP/IP stack to
compose the email header.
Syntax: AT#SUBJi="<value>" (replace i with 1, 2, or 3)
AT#SUBJi? (replace i with 1, 2, or 3) or AT#VMAILi, AT#VALL
Values: Alphanumeric ASCII text string up to 120 characters. No default.