I have one scenario for checking file on s3 bucket if file available then process it else send email file not present on bucket.
Sounds pretty straightforward. Do you have a specific question?
In general, you’ll probably want to look at the Directory Browser and File Reader snaps for looking for and reading the file from the S3 bucket (if exists). You can also check out the post below about performing an action when there is no data if you want to send an email when there is no file: