Please search the web for rubrics. For example I found a few at 6+1 Trait® Rubrics (aka Scoring Guides) | Education Northwest Also see Writing Skills - Communication Skills Training from MindTools.com
Both found by Google search at Google
Have a nice day
Leaning and Teaching Fellow (Retd)
The University of Bolton, UK
Chief Advisor, Promentor-consulting
Thank you so much for sharing these links and surely they are of a great help, however I still can't find any measurement tool for e-mail writing.
I have my presentation ready with all Do's and Don'ts of e-mail writing and the only help I'm seeking is for the scorecard / Evaluation or a Rubric to measure these skills.
Let me know if you can help in that.
Please prepare on based on the links I sent you and attach it for people to comment on it. Also see But Can They Write Email to Customers? - CRM Magazine which may give you more ideas.