If you would like to apologize for being unable to attend a meeting, here is a sample apology later if you’re unable to attend a meeting.
To [Recipient Name]
Subject: Unable to Attend Meeting
Dear [Recipient Name],
I regret to inform you that I will be unable to attend the meeting scheduled for [Date] with [Name/s]. I have an important [Event name] that I cannot postpone, and I am thereby compelled to skip the meeting.
However, I will ensure that I obtain all the important details discussed during the meeting from a colleague. I regret any inconvenience caused by my absence.
Thank you for your consideration and support.