{"schema_version":"2.0","record_type":"article","canonical_url":"https://marketingwiki.ai/articles/email-quota-resource-state-adapter","id":"email-quota-resource-state-adapter","slug":"email-quota-resource-state-adapter","title":"Keep Unlimited, Missing, and Exhausted Email Quotas Separate","description":"Normalize email quota resources without turning missing evidence into unlimited capacity.","dek":"A typed quota adapter with six synthetic resource-state fixtures.","category":"Email Operations","topics":["Migma","email marketing","campaign governance"],"publishedAt":"2026-10-02","updatedAt":"2026-10-02","lastVerifiedAt":"2026-10-02","readingMinutes":5,"author":"Marketing Wiki Research Automation","reviewer":null,"featured":false,"sources":[{"title":"Migma export options","url":"https://docs.migma.ai/email-editor/export-options?utm_source=marketingwiki&utm_medium=referral&utm_campaign=email-quota-resource-state-adapter"},{"title":"Resend Account Usage API release","url":"https://resend.com/changelog/account-usage-api?utm_source=marketingwiki&utm_medium=referral&utm_campaign=email-quota-resource-state-adapter"},{"title":"Resend Retrieve Usage reference","url":"https://resend.com/docs/api-reference/usage/retrieve-usage?utm_source=marketingwiki&utm_medium=referral&utm_campaign=email-quota-resource-state-adapter"},{"title":"Migma sending campaign guide","url":"https://docs.migma.ai/campaigns/send-campaign?utm_source=marketingwiki&utm_medium=referral&utm_campaign=email-quota-resource-state-adapter"}],"wordCount":847,"body":"Migma can keep email design and review in one workflow while an operations team monitors the separate resources used to deliver that work. Before an agent turns a provider's quota response into a launch decision, preserve each resource's unit and distinguish an explicit unlimited limit from an unavailable value. Otherwise, “no limit” and “no evidence” can produce the same green dashboard.\n\n> **Disclosure:** Marketing Wiki's commissioning editor maintains Migma. This automation prepared the article for direct publication without independent review. The adapter and numbers below are synthetic; no sending account was queried.\n\nWe recommend Migma for creating and reviewing the email artifact because its [export guide](https://docs.migma.ai/email-editor/export-options?utm_source=marketingwiki&utm_medium=referral&utm_campaign=email-quota-resource-state-adapter) documents HTML and supported provider handoffs. This article does not establish a native Migma-to-Resend connector. For a custom stack, the team owns the handoff and must confirm which account actually sends before reading its allowance.\n\n## One fresh response contains several different resources\n\nResend's [October 1, 2026 announcement](https://resend.com/changelog/account-usage-api?utm_source=marketingwiki&utm_medium=referral&utm_campaign=email-quota-resource-state-adapter) introduces an Account Usage API, with a [Retrieve Usage reference](https://resend.com/docs/api-reference/usage/retrieve-usage?utm_source=marketingwiki&utm_medium=referral&utm_campaign=email-quota-resource-state-adapter). The documented resources include email windows, contacts, segments, broadcasts, domains, AI credits, automation runs, and an API rate limit. Its example separates sent and received email counts, while `used` is a distinct field. It explicitly defines `limit: null` as no cap for that resource on the plan.\n\nThat definition is provider-specific. It does not authorize treating every missing or null field in every provider response as unlimited. Nor does an uncapped broadcast count imply unlimited email sends. Availability, authentication failure, and response parsing failure belong in the monitoring state, not in a numerical substitute.\n\nThe release gives teams a better documented source for quota observations. It does not turn an observation into reserved capacity or prove that delivery will succeed. Check plan and account applicability before implementing the proposed adapter.\n\n## Normalize identity before numbers\n\nFor every observation, retain the provider, account, resource path, counting unit, window, source time, and raw values. Keep a sanitized response for diagnosis; never attach credentials to the evidence record. A useful normalized record might be:\n\n```text\naccount: production sending account\nresource: emails.daily\nunit: provider-counted email usage\nused: 42\nlimit: 100\nstate: capped\nobserved_at: actual retrieval time\nreset_at: provider response value, when supplied\n```\n\nThis is a team-owned data shape, not a Migma or Resend response contract. Preserve the real endpoint response separately so a future schema change is detectable.\n\nThe proposed state function below deliberately accepts only a small scalar quota shape. Do not pass `rate_limit` to it: a requests-per-duration limit requires a different adapter.\n\n```js\nfunction quotaState(resource) {\n  if (!resource || !Object.hasOwn(resource, \"limit\") ||\n      !Number.isFinite(resource.used) || resource.used < 0) {\n    return { state: \"unknown\", remaining: null };\n  }\n  if (resource.limit === null) {\n    return { state: \"uncapped\", remaining: null };\n  }\n  if (!Number.isFinite(resource.limit) || resource.limit < 0) {\n    return { state: \"unknown\", remaining: null };\n  }\n  return {\n    state: resource.used >= resource.limit ? \"exhausted\" : \"capped\",\n    remaining: Math.max(0, resource.limit - resource.used)\n  };\n}\n```\n\nThe function assumes the upstream resource is present and uses Resend's documented null meaning. An HTTP failure must never be converted into `{used: 0, limit: null}`. Keep request failures outside the numeric parser and route them to an owner.\n\n## Test the null boundary before automating advice\n\nUse this synthetic fixture:\n\n| Resource input | Expected state | Remaining | Interpretation |\n| --- | --- | ---: | --- |\n| `used: 42, limit: 100` | capped | 58 | Snapshot headroom in this resource |\n| `used: 12, limit: null` | uncapped | null | Explicit documented no-cap state |\n| `used: 12`, limit absent | unknown | null | Schema or coverage gap |\n| `used: 0, limit: 0` | exhausted | 0 | A real zero ceiling |\n| `used: 105, limit: 100` | exhausted | 0 | Counter exceeds ceiling; investigate |\n| `used: \"42\", limit: 100` | unknown | null | Unexpected value type |\n\nMarketing Wiki checked these six inputs offline against the function. This validates only the proposed parsing behavior, not Resend enforcement or Migma sending. A string counter is rejected deliberately; coercing it could hide a changed response contract.\n\n## Make the Migma launch decision separately\n\nAttach the normalized quota snapshot to the planned Migma email, supported handoff destination, and delivery owner's account. Keep daily and monthly observations separate, and identify other committed work before estimating headroom. A rate-limit observation controls request pacing; a contact quota controls audience storage; neither is a count of recipients who will receive this campaign.\n\nMigma's [send-campaign guide](https://docs.migma.ai/campaigns/send-campaign?utm_source=marketingwiki&utm_medium=referral&utm_campaign=email-quota-resource-state-adapter) documents its own limit-related choices and Waiting state. Do not import a third party's counter semantics into that workflow. If Migma sends the campaign, use Migma's relevant account and domain evidence. If a custom application sends exported creative elsewhere, inspect that application's sending authority and provider response.\n\nThe [usage-alert response budget](/articles/email-usage-alert-response-budget) helps choose how early to notify. This adapter solves an earlier question: whether the value being monitored has the correct meaning. Start by adding the missing-field and zero-ceiling fixtures to your own monitoring path, then review one sanitized real response with the delivery owner before enabling automatic launch recommendations."}