## Summary
- Send a queued email notification to users after subsequent bank syncs
when new transactions are found
- Email includes a per-bank breakdown of imported transaction counts
with a link to the transactions page
- Skips notification on first sync and when zero new transactions are
created
## Test plan
- [x] Sends email when new transactions are synced on subsequent sync
- [x] Does not send email on first sync
- [x] Does not send email when zero new transactions
- [x] Aggregates multiple accounts under same bank
- [x] Lists different banks separately in email
- [x] Existing sync job tests still pass
Víctor Falcón