Possibly due to the influx of letters regarding this incident, NUS' email service has been significantly delayed. 

"Dear Students,

Due to an unusually high email volume from an external source, you may experience a lag in receiving emails. While we have rectified the problem, you may continue to encounter delays while the system resumes its normal state."

Below taken from Rachel Quek. You can view her post here: https://www.facebook.com/quekrachel/posts/10156707972379998

Sample Templates:

1. Sample letter for general members of the public and students: https://tinyurl.com/NUSsample2
2. Alternative template, courtesy of Khee Hoon Chan: https://tinyurl.com/NUSsample
3. Sample letter for students primarily, but that can be adapted for members of the public. Adapted with thanks to @changimillionaire: https://tinyurl.com/NUSstudentsample
4. Petition to MOE to instate stricter anti-sexual harassment policies: https://tinyurl.com/y3euow37

Contacts:

• President, Prof Tan Eng Chye
  uprsec@nus.edu.sg
• Senior Deputy President and Provost, Prof Ho Teck Hua
  pvohoth@nus.edu.sg
• Acting Deputy President (Administration), Prof Yong Kwet Yew 
  uciyky@nus.edu.sg
• Vice Provost (Student Life), Prof Florence Ling 
  pvoflyy@nus.edu.sg
• Whistle Blowing
  whistleblow@nus.edu.sg
• Campus Security 
  ocssec@nus.edu.sg
• Office of Student Affairs 
  osalistens@nus.edu.sg
• Dean of the Faculty of Engineering (Nicholas's faculty) 
  Prof Chua Kee Chiang: engdean@nus.edu.sg
• Vice Dean, Faculty of Engineering, Prof David Chua (Student Life): engdavid@nus.edu.sg
• Head of Chemical Engineering:
  Prof Liu Bin: chehead@nus.edu.sg