You can send personal emails to (replace the words in parenthesis with the symbols, I'm just trying to prevent spammers):
dianab(at)myldsmail(dot)net
You can send letters to:
I'm still awaiting an updated address for Diana's apartment in Taipei. If you'd like to send something you can address it to her and send it to the mission home. As with all foreign mail, I don't make any guarantees about it getting to her. It costs more than sending normal letter so make sure you take it to the post office to pay for it.
Mission Home Address:
Floor 4, No. 24, Lane 183
Jin Hua Street, Da-An District, Taipei
Taiwan
Or you can use dearelder.com. You will have to set up an account and pay to send the letters.