I am successfully emailing ebooks directly from Calibre via Xtra with these settings - Hostname send.xtra.co.nz, Port 465, User Name (my full email address), and SSL encryption.
Am unable to get it working for a friend who is on gmail using settings - Hostname smtp.gmail.com, Port 465 and SSL encryption (as per instructions on gmail).
But it's not working so am I missing something? Am also going to set up for another friend on wnation using smtp.gmail.com, Port 465, SSL encryption (as per wnation instructions).
Any help greatly appreciated, thanks.