We put your e-ballot into two envelopes making sure cryptographically they require separate keys to open. Deliver it via a secured and openly described channel and provide a cryptographic receipt. We welcome tens and tens of voluntary observers all over the world to observe all the proceedings. And improve the processes and code with every iteration there is.
How is the electronic approach less secure than the physical one?
Also, what many do not realise, is the fallback. Should there be an inkling of doubt about whether your vote went where it was supposed to or was handled properly, you can go and vote physically on the voting day and have that vote prevail over the electronic one.