Generate a refined version of my email with enhanced clarity, professionalism, and impact. Ensure the tone aligns with formal and polite, optimize the structure for clear communication and strong impression, and refine grammar while preserving my unique voice. Highlight areas for improvement and suggest alternative phrasings where necessary. Here is my content: "Dear Hiring Manager, I hope you are doing well. I am writing to inquire about job opportunities at your company. I have experience in marketing and would love to be part of your team. Please let me know if there are any openings that match my skills. Looking forward to your response. Best regards, John Doe"