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There is a new SDK v1.4 and the release notes it say something about SSL, does it get us closer to SMTPs with TLS? I am also interested in this.

t_i_t_o wrote:There is a new SDK v1.4 and the release notes it say something about SSL, does it get us closer to SMTPs with TLS? I am also interested in this.

The SDK only supports TLS sockets, however most SMTP servers use the STARTTLS protocol to upgrade an unencrypted connection to TLS. So unless your server supports TLS sockets (SMTPS) on a dedicated port (usually 465), you still need to implement STARTTLS.

I am generally interested in sending mails via the gmail SMTP server which supports port 465. But currently I've solved this using Raspberry Pi and stunnel in the middle. Anyway ESP directly communicating with the gmail SMTP would be much cleaner approach.

OK, took me some hours, but it is all ready now, SSL works like a charm, enjoy it - http://www.esp8266.com/viewtopic.php?f=6&t=6173