Subject: Important Update: Change in Project Timeline

Dear [Client's Name],

I hope this email finds you well.

I am writing to inform you about a necessary adjustment to the timeline of our project. After careful consideration and evaluation of our current progress, it has become evident that we need to revise the schedule to ensure the successful completion of the project within the highest standards.

The new timeline reflects [mention specific changes, such as extended deadlines or altered milestones]. Please find attached a detailed outline of the updated timeline for your reference.

I understand that changes in the project timeline may impact your plans, and I sincerely apologize for any inconvenience this may cause. Rest assured, we are fully committed to minimizing any disruptions and ensuring that the project progresses smoothly.

We remain dedicated to delivering exceptional results and maintaining open communication throughout this process. Should you have any concerns or questions regarding the revised timeline, please do not hesitate to reach out to me directly. Your feedback is invaluable to us, and we are here to address any queries you may have.

Thank you for your understanding and cooperation as we navigate these adjustments together. We are confident that this modification will ultimately contribute to the overall success of the project.

Looking forward to our continued collaboration and the successful completion of the project.

Warm regards,

[Your Name]

[Your Position]

[Your Contact Information]