Is there any way to alleviate the problem of these forced UX transitions? At the time, Gmail was pretty revolutionary for what it offered (a large, free email account), but as the cost of compute and storage has declined, its pretty cheap to store 10GB-15GB of email in an mbox file or similar data store, fronted with JMAP [1], which any client or web front end that supports it could talk to. Is asking for long term support of a fronend (~10 years) unreasonable as long as the underlying API version is still supported?<p>[1] <a href="https://jmap.io/" rel="nofollow">https://jmap.io/</a><p>(fastmail user, no other affiliation)