Yes, there is a workaround for the HYPERLINK argument length limit. One way to do this is by using a combination of the HYPERLINK function and a user-defined function (UDF) in VBA.

Here are the steps to create a UDF that will allow you to use longer arguments in the HYPERLINK function:

1. Open the Visual Basic Editor by pressing Alt + F11.
2. In the Project Explorer window, right-click on the workbook name and select Insert Module.
3. In the new module, paste the following code:
   
   
   Formula:

   Function HyperlinkLong(ByVal link As String, ByVal display_text As String) As String
    Dim s As String
    s = "=HYPERLINK(""" & link & """,""" & display_text & """)"
    HyperlinkLong = s
End Function 

4. Save the module and return to the worksheet.
5. In the cell where you want to create the hyperlink, use the following formula:
   
   
   Formula:

   =HyperlinkLong(&A1, "Click Here") 

   This will create a hyperlink with the display text "Click Here" that will open the user's default email client with the specified subject and body. The body can be as long as necessary, as it is passed as a parameter to the UDF rather than being included in the HYPERLINK function directly.
   
   Note that this workaround requires the use of VBA, but it does not require the use of macros. The UDF is simply a function that can be used in a worksheet formula like any other built-in function.