ZX Spectrum sending email

ZX Spectrum 128k 2 (grey) with SIF (serial port with 2x 16C550) and ConnectOne module (Nano Socket LAN) sending email. I am using ISOROM 128 (ZX BASIC modification for TRDOS) and Betadisk with TRDOS , after reset is started my booter (simple and fast file runner with KMouse Turbo support) and then experimental utility for SIF. Terminal is not finished yet, but works. And of course, my ZX Spectrum 2 is connected to 17“ LCD trought scandoubler and VGA analog input. SIF interface