SIM-800L E-Mail Sending Error

Hi,
I have a SIM-800L model and I have a SIM-800L module and I am trying to send an email using my various email accounts. I tried using manual serial port AT commands and finally, I got this “Network Error”:

OK
AT+EMAILTO=30
OK
AT+SMTPSRV="smtp.gmail.com",25
OK
AT+SMTPAUTH=1,".............@gmail.com","password"
OK
AT+SMTPFROM=".............@gmail.com","name"
OK
AT+SMTPRCPT=0,0,".............@gmail.com","name"
OK
AT+SMTPSUB="Test"
OK
AT+SMTPBODY=4
DOWNLOAD

OK
AT+SMTPSEND
OK

+SMTPSEND: 61

Firstly, I tried with my Gmail account, but some developers say that Gmail uses a secured connection and that might be the problem. Then, I swapped my account to my Hotmail account. Also, I checked if Hotmail provides SMTP protocol and found out that it does. Regardless, I only get the “SMTPSEND: 61” error. If I succeed at this sending email process, I will send emails with attachments like photos, text files, etc.

Does anyone have any suggestions about this error? Or are there any alternative ways to send media files except MMS?