How to address professor over email?

[muteswann18]

After the first email from a POI, she signed her name Firstname Lastname. I responded by addressing her as Professor Lastname. Second time around, she just signed Firstname. In my response, is it now appropriate to address her, "Dear Firstname" ?????

Wish this cr-p didn't matter. And doubt it really does to her, but who knows!

Thanks for your help!

[sjoh197]

Unless you know her well outside of this application, I would continue to address her as professor X unless she specifically say "you can call me firstname." 

[fuzzylogician]

The norms on these things vary greatly by field, geography, and other factors. If you're unsure, keep saying "Professor LastName." In my field, at this point you would be licensed to write "Dear FirstName," but I'm in a different field than you, and you should be careful. 

 

Edit: also, please don't post the same question multiple times. I've deleted the other post you made with this question, since it had no replies and this one does. 

Edited February 1, 2016 by fuzzylogician

[muteswann18]

Haha, whoops -- too late! Well, now I know for next time. Thanks!

Edited February 1, 2016 by muteswann18