Can send invitation email but not dashboard subscription email

self-host, version as follows. I can send the email for invitation, it works. and my email provider log show me they sent the email for invitation.

but for dashboard subscription. I test it by clicking "Send email now" in dashboard page, and the API return is 200 (see the log below). But I check the log in my Email Provider, there is no record for sending this email, which means although Metabase API returns 200, but the email was not sent.

{
  "browser-info": {
    "language": "en-US",
    "platform": "MacIntel",
    "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36",
    "vendor": "Google Inc."
  },
  "system-info": {
    "file.encoding": "UTF-8",
    "java.runtime.name": "OpenJDK Runtime Environment",
    "java.runtime.version": "11.0.20.1+1",
    "java.vendor": "Eclipse Adoptium",
    "java.vendor.url": "https://adoptium.net/",
    "java.version": "11.0.20.1",
    "java.vm.name": "OpenJDK 64-Bit Server VM",
    "java.vm.version": "11.0.20.1+1",
    "os.name": "Linux",
    "os.version": "5.4.0-1018-aws",
    "user.language": "en",
    "user.timezone": "GMT"
  },
  "metabase-info": {
    "databases": [
      "postgres",
      "h2"
    ],
    "hosting-env": "unknown",
    "application-database": "postgres",
    "application-database-details": {
      "database": {
        "name": "PostgreSQL",
        "version": "12.16 (Ubuntu 12.16-0ubuntu0.20.04.1)"
      },
      "jdbc-driver": {
        "name": "PostgreSQL JDBC Driver",
        "version": "42.5.4"
      }
    },
    "run-mode": "prod",
    "version": {
      "date": "2023-10-26",
      "tag": "v0.47.6",
      "branch": "?",
      "hash": "3a7ed7a"
    },
    "settings": {
      "report-timezone": null
    }
  }
}
[b84974d6-29d6-4e16-a4f8-b356b7be2d73] 2023-11-05T14:35:33-08:00 DEBUG metabase.server.middleware.log GET /api/task 200 301.4 ms (2 DB calls) App DB connections: 0/13 Jetty threads: 3/50 (5 idle, 0 queued) (69 total active threads) Queries in flight: 0 (0 queued)
[b84974d6-29d6-4e16-a4f8-b356b7be2d73] 2023-11-05T14:35:44-08:00 DEBUG metabase.server.middleware.log GET /api/task/15 200 42.9 ms (3 DB calls) App DB connections: 0/13 Jetty threads: 3/50 (6 idle, 0 queued) (69 total active threads) Queries in flight: 0 (0 queued)
[b84974d6-29d6-4e16-a4f8-b356b7be2d73] 2023-11-05T14:36:02-08:00 INFO metabase.query-processor.card Question's average execution duration is 1.3 s; using 'magic' TTL of 13.0 s 💾
[b84974d6-29d6-4e16-a4f8-b356b7be2d73] 2023-11-05T14:36:02-08:00 INFO metabase.query-processor.middleware.cache Query took 244.0 ms to run; minimum for cache eligibility is 60.0 s
[b84974d6-29d6-4e16-a4f8-b356b7be2d73] 2023-11-05T14:36:20-08:00 DEBUG metabase.server.middleware.log POST /api/pulse/test 200 18.6 s (38 DB calls) App DB connections: 0/13 Jetty threads: 3/50 (5 idle, 0 queued) (65 total active threads) Queries in flight: 0 (0 queued); postgres DB 2 connections: 0/1 (0 threads blocked)
[b84974d6-29d6-4e16-a4f8-b356b7be2d73] 2023-11-05T14:36:31-08:00 DEBUG metabase.server.middleware.log GET /api/task/info 200 77.9 ms (0 DB calls) App DB connections: 0/13 Jetty threads: 3/50 (5 idle, 0 queued) (65 total active threads) Queries in flight: 0 (0 queued)