Creating a grant for a group dispatched the notification emails one at
a time inside the HTTP request — 30 members × ~500 ms of SMTP ≈ 15 s
holding the POST /api/grants response (the code carried a TODO
acknowledging it).
Dispatches are independent (coalescing and rate-limiting key on the
(granter, recipient) pair, distinct per member), so run them through
`buffered(6)`: ~6× less wall time for group fan-outs while capping
parallel SMTP sessions, with outcome order still matching member order.
https://claude.ai/code/session_01Dp3oWon5GBMVn4j3QXZdgx
- add coalesced protection to avoid mail bombing if an invited goes many grant in a short period
- add resentd method in share menu item (work for both internal and external users)
- user can disable email notification via his properties
- add env variable from admin to disable notifications
Edouard Vanbelle