How can I send an image in the email body from Thunderbird with Excel VBA?

How can I send an image in the email body from Thunderbird with Excel VBA?

thundnd = "C:\Program Files (x86)\Mozilla Thunderbird\thunderbird.exe " & "-compose " & Chr(34) & _
  "to='" & email & "'," & "subject='" & subj & "'," & "body='" & body & "'," & "format=1," & Chr(34)    
            
Call Shell (thundnd, vbNormalFocus)

I want to send an image, not in the attachment, but inside the HTML body of the email.

In VBA I encode the image in String using EncodeBase64.
In the results, I get a jump to the next line after 72 characters.

/9j/4AAQSkZJRgABAQEAYABgAAD/4RCERXhpZgAATU0AKgAAAAgABAE7AAIAAAAGAAAISodp
AAQAAAABAAAIUJydAAEAAAAMAAAQcOocAAcAAAgMAAAAPgAAAAAc6gAAAAgAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

I insert it into the body

<img src="data:image/png;base64,/9j/4AAQSkZJRgABAQEAYABgAAD/4RCERXhpZgAATU0AKgAAAAgABAE7AAIAAAAGAAAISodp"
aaqaaaabaaaiujydaaeaaaamaaaqcoocaacaaagmaaaapgaaaaac6gaaaagaaaaaaaaaaaaa="" e.t.c.

as in this post.