As a bilingual professional with years of experience in Hindi to English translation, I am confident that I can meet all your requirements for this project. Throughout my career, I've consistently demonstrated an impeccable understanding of both languages -- recognition that solely relies on my deep involvement in the cultures and experiences behind each language.
Your criteria of maintaining a formal and professional tone in the translation aligns harmoniously with my specialization. Being aware of the intricacies and subtleties one language holds over the other is a testament to my skillful translation ability - rendering your emails with the same nuance, tone, and essence as the original correspondence.
In closing, I can assure you that by choosing me for your Hindi-English Email Translation project, you will get a deliverable that is not only accurate, but also maintains a professional tone from start to finish. High-quality work, delivered on time, is what I pride myself on, and it is what you'll receive from me. Let's make this collaboration a successful one!