Recently I did a major overhaul of a business website, which made it more user friendly, the director of the department sent out an (to the I.T Department) email on doing a great job. Of course, being a newcomer I wouldn't be able to do my job if I wasn't given a proper setup and help from my manager and peers. Is it good to reply to that email, as it is, from the director? If so, how can I make it sound more professional and thankful whilst I also thank my team?
In my experience, department/company wide emails like this don't really necessitate a personal response.
You could respond if you wanted to, but don't use "Reply All" and keep it pretty short.
Bear in mind that the director is congratulating the department, not just you. If you reply implying that you did the work all by yourself, this might be misunderstood and seen as you trying to take all the glory (even if you did do all the development work by yourself...). The director's thanks are also (presumably) directed at the people who gathered the requirements, designed the new website, tested it, and deployed it.
Being new I would direct it to your superior to handle that sort of thing, he/she can decide if and what should be sent.
Otherwise a short message will suffice along the lines of:
Thank you for those kind words. We aim to improve the usability of our web-sites and we are glad to have made a contribution.
With kind regards:
through Alpha Bravo
Keep it short and sweet.
The director wanted to appreciate all people involved in that improvement and wanted to be sure all of them knew that. Period.
The one(s) that can reply to such email is the manager, or managers if it was cooperation of several teams, of the appreciated group because they are responsible for all the people under their command.
If you, as the low-branch employee, reply it may be, and will be, understood as skipping the ranks. Nobody expects anyone below the team leaders to respond to such emails.
On the other hand, if the director bumps in you personally reply, "Thanks mr. Boss" is comletely sufficient and in that case you are representing whole team. And it was not your decision to stand out.