diff --git a/file.go b/file.go
index 45e142a..77e516c 100644
--- a/file.go
+++ b/file.go
@@ -9,10 +9,11 @@ import (
 	"net/textproto"
 )
 
-// FileOption returns a function that can be used for grouping File options
+// FileOption is a function type used to modify properties of a File
 type FileOption func(*File)
 
-// File is an attachment or embedded file of the Msg
+// File represents a file with properties like content type, description, encoding, headers, name, and
+// writer function. This can either be an attachment or an embedded file for a Msg.
 type File struct {
 	ContentType ContentType
 	Desc        string
@@ -22,32 +23,35 @@ type File struct {
 	Writer      func(w io.Writer) (int64, error)
 }
 
-// WithFileContentID sets the Content-ID header for the File
+// WithFileContentID sets the "Content-ID" header in the File's MIME headers to the specified id.
 func WithFileContentID(id string) FileOption {
 	return func(f *File) {
 		f.Header.Set(HeaderContentID.String(), id)
 	}
 }
 
-// WithFileName sets the filename of the File
+// WithFileName sets the name of a File to the provided value.
 func WithFileName(name string) FileOption {
 	return func(f *File) {
 		f.Name = name
 	}
 }
 
-// WithFileDescription sets an optional file description of the File that will be
-// added as Content-Description part
+// WithFileDescription sets an optional file description for the File. The description is used in the
+// Content-Description header of the MIME output.
 func WithFileDescription(description string) FileOption {
 	return func(f *File) {
 		f.Desc = description
 	}
 }
 
-// WithFileEncoding sets the encoding of the File. By default we should always use
-// Base64 encoding but there might be exceptions, where this might come handy.
-// Please note that quoted-printable should never be used for attachments/embeds. If this
-// is provided as argument, the function will automatically override back to Base64
+// WithFileEncoding sets the encoding type for a file.
+//
+// By default one should always use Base64 encoding for attachments and embeds, but there might be exceptions in
+// which this might come handy.
+//
+// Note: that quoted-printable must never be used for attachments or embeds. If EncodingQP is provided as encoding
+// to this method, it will be automatically overwritten with EncodingB64.
 func WithFileEncoding(encoding Encoding) FileOption {
 	return func(f *File) {
 		if encoding == EncodingQP {
@@ -58,23 +62,23 @@ func WithFileEncoding(encoding Encoding) FileOption {
 }
 
 // WithFileContentType sets the content type of the File.
-// By default go-mail will try to guess the file type and its corresponding
-// content type and fall back to application/octet-stream if the file type
-// could not be guessed. In some cases, however, it might be needed to force
-// this to a specific type. For such situations this override method can
-// be used
+//
+// By default we will try to guess the file type and its corresponding content type and fall back to
+// application/octet-stream if the file type, if no matching type could be guessed. This FileOption can
+// be used to override this type, in case a specific type is required.
 func WithFileContentType(contentType ContentType) FileOption {
 	return func(f *File) {
 		f.ContentType = contentType
 	}
 }
 
-// setHeader sets header fields to a File
+// setHeader sets the value of a given MIME header field for the File.
 func (f *File) setHeader(header Header, value string) {
 	f.Header.Set(string(header), value)
 }
 
-// getHeader return header fields of a File
+// getHeader retrieves the value of the specified MIME header field. It returns the header value and a boolean
+// indicating whether the header was present or not.
 func (f *File) getHeader(header Header) (string, bool) {
 	v := f.Header.Get(string(header))
 	return v, v != ""