Earlier quoted context omitted.
Indeed because auto-complete of recipient address from my contacts is useless, right ? Same could be said for retrieving new emails without reloading the page I guess … Had JavaScript not existed, the web would be dead a long time ago already.
Both good points (although the second one could be handled through a meta refresh I guess). But I'd like to point out we were discussing where javascript is absolutely needed, not where it's convenient.
Remember when the web allowed no video playback ? Flash was everywhere ! And Flash was non-standard and closed-source, maintained by a single company without competition. The current state of the web is a massive improvement compared to what it was 10 years ago, especially on the security side.
If you want to create a webmail (or any other web platform) that needs no JavaScript, go ahead. I doubt you'll be successful competing against people using JavaScript, but if the demand for a JavaScript-free web experience is big enough, you could live happily in that niche.