Data Sheet

Smart Machine Smart Decision
SIM800 Series_AT Command Manual_V1.09 306 2015-08-03
does not issue an error response,
b
ut the “scan listing” will be
empty. In either case, each scan listing will be finished by
so-called “dotline”, i.e. a new line with just a single dot.
<msgNumber> and <lineNumber> must not be given.
2 Uidl command
The “Uidl” command returns a multi-line “unique-id
Listing”. For each message on the maildrop list of the
Server the POP3 service returns a line containing the
message number and its unique-id. A final “dotline”
will be printed at the end of the “unique-id listing” If
there are no messages on the maildrop list of the server. The
POP3 service returns a positive response,
i.e. It does not issue an error response, but the “unique-
id listing” will be empty. In either case, each unique-id
listing will be finished by so-called “dotline”, i.e.a new
line with just a singledot. <msgNumber> and <lineNumber>
must not be given.
3 Top command
The command retrieves the number of lines of the message’s
body from the POP3 server’s maildrop list. The POP3 server
sends the headers of the message, the blank line separating
the headers from the body, and then the number of lines of the
message’s body. If the number of lines requested by The
POP3 client is greater than the number of lines
in the body, then the POP3 server sends the entire
message. If no such message exists on the server the POP3
service issues an error response to the user.
Each email will be finished by a so-called “dotline”,
i.e.a new line with just a single dot.
<msgNumber> and <lineNumber> must be given.
4 Retrieve command
The command retrieves the related message from the
POP3 server’s maildrop list. If no such message exists
on the server the POP3 service issues an error response to the
user. Each email will be finished by a so-called “dotline”, i.e.
a new line with just a single dot.
<msgNumber> must be given.
<msgNumber> The message number of Email.
<lineNumber> The number of lines of the message body.
<code> The result of logging out POP3 server
1 Normally log out POP3 server
61 Network error
62 DNS resolve error
63 POP3 tcp connection error