Email sending macro

Hello,
I have created a macro to send mails form outlook. All code is working properly. I jast want to know how to do formating of the signature in the mail. i wana make my name bold in the signature. Can anyone help me?

This is the code:

Sub ReadExcel()
 
 
    Dim OutApp As Object
    Dim fLoc As String
    Dim cell As Range, rng As Range
    Dim vFile As Variant, vFiles As Variant
    Dim Signature As String


 
 
    'Range of cells with recipeant info
    'Column A is attaachment filenames (multiple filenames separated by ; e.g File1.xls;File2.xls
    'Column B is the email address
    'Column C is the File path for the attachment files
    'Column D id the body of the mail
    

    With ThisWorkbook.ActiveSheet
        Set rng = .Range("A2", .Range("A" & Rows.Count).End(xlUp))
    End With
   
    Set OutApp = CreateObject("Outlook.Application")
   
    ' Read in the data and create a new message with attachment for each Excel entry
    For Each cell In rng
   
        'File path in column C
        fLoc = cell.Offset(, 2).Value
        If Right(fLoc, 1) <> "\" Then fLoc = fLoc & "\"
       
        'Create a new Email for each recpient
        With OutApp.CreateItem(0)
            'Recipient
            .Recipients.Add cell.Offset(, 1).Value
           
            'Attach each file
            vFiles = Split(cell.Value, ";")
            For Each vFile In vFiles
                If Len(Dir(fLoc & vFile)) Then
                    .Attachments.Add fLoc & vFile
                Else
                    AppActivate ThisWorkbook.Parent
                    MsgBox "Could not locate file: " & vbCr & fLoc & vFile, , "File Not Found"
                End If
            Next vFile
           
            .Display
             .Subject = "Weekly Sales Report"
             .Body = Sheets("sheet1").Cells(2, 4).Value
             

             
                      
             .Send
        End With
    Next cell
   
End Sub