Body as a BLOB.
Body as an image.
Body as a Text string.
Name of the uploaded file.
Content-type of the part.
Input field name.
Size of the body (in bytes).
Saves the body of the part in the file whose path is passed in filePath.
file path where to save MIMEMessagePart
if true, it will override the file if already exists. Else, the save will be omitted
Body as a BLOB.