$ heroku pg:info
=== HEROKU_POSTGRESQL_CYAN_URL, DATABASE_URL
Plan: Standard 0
Status: Available
Data Size: 11.2 GB
Tables: 81
PG Version: 10.16
Connections: 13/120
Connection Pooling: Available
Credentials: 1
Fork/Follow: Available
Rollback: earliest from 2021-04-29 19:41
Created: 2021-04-26 18:05
Region: us
Data Encryption: In Use
Continuous Protection: On
Maintenance: not required
Maintenance window: Thursdays 19:30 to 23:30 UTC
Add-on: postgresql-clean-89871
メンテナンス終わってるよねえ。メールの方がどこかで遅延してたんかな