Base64

[mister_e]

I hope not too much trouble for you...
Thanks

[mosajii]

I and some of my friends had tried to create e-mail client on the PIC and gsm modem some years ago. But we were not successful. I would request Pedja to let me know how he is trying to do it. I would like to thank him in advance for his help.

[pedja089]

I'm almost finished. The program is written, but I have not found the time to test it.
To test an email server, I used putty.
Here's communications with the server.

EHLO
AUTH LOGIN here should be base64 emall  http://www.webpan.com/Customers/Email/base64_conversion.htm
334 UGFzc3dvcmQ6 '=password
enter password in base64
235 Authentication succeeded
MAIL FROM: <123@123>
250 OK
RCPT TO: <1123@123>
250 Accepted
DATA
354 Enter message, ending with "." on a line by itself
From: <123@123>
To: <1123@123>
Subject: Hello
Date: 17:05:41
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii

This is a simple Message
. 'end of mesage, dot in singl
250 OK id=1Pch7Q-0003zQ-BX

First you need to set up gprs conn.
then

  serout2 tx,84,["AT+CIPSTART=0,",34,"TCP",34,",",34,"mail.123",34,",","26",13,10]
 CALL WAIT_OK
 IF OK=0 THEN GOTO send
 serin2 rx,84,lag,ERR_GPRS,[wait("0, CONNECT OK")]
 serin2 rx,84,lag,err_mail,[wait("220")]
 pause 700 ' wait for comments
 serout2 tx,84,["AT+CIPSEND=0",13,10]            
 CALL WAIT_V 'wait for >
 IF OK=0 THEN GOTO ERR_GPRS
 pause 10         
 serout2 tx,84,["EHLO",13,10]
 pause 5
 serout2 tx,84,[26]
 CALL WAIT_SEND_OK
serin2 rx,84,lag,err_mail,[wait("250")]
 pause 700 
 serout2 tx,84,["AUTH LOGIN email in base64",13,10]
etc...

Base64 in vb6 application, I use to set email, server, time between e mail, and other device parameters.
With a slightly different message body, you can send attachment.
EDIT:
I used the same principle for ftp. Works over a month without a single error