Is the usage of word tentative is correct in following sentence Thanks - Dear Emma Kindly inform us by if you are not sure for attendance.?

The sentence "Thanks - Dear Emma Kindly inform us by [date] if you are not sure for attendance." is grammatically correct, but it could be made more concise and clear. Here's a revised version using the word "tentative":

"Dear Emma, Please let us know by [date] if your attendance is tentative."

Here's why this revision is better:

* Clarity: The phrase "tentative attendance" clearly conveys the meaning that Emma is unsure if she can attend.

* Conciseness: It's shorter and avoids the awkward phrasing "if you are not sure for attendance."

* Politeness: Using "Please let us know" is more polite than "Kindly inform us."

You could also consider adding a brief explanation for needing to know about her attendance, such as:

"Dear Emma, Please let us know by [date] if your attendance is tentative, as we need to finalize arrangements for the event."