## Mark a sender healthy **post** `/v1/senders/{id}/mark_healthy` Clears a health reason that sending recorded, so the sender can be picked for new sends again, and returns the updated sender. A sender with nothing to clear is returned unchanged. Clears `healthReason` `BOUNCE_THRESHOLD`, `RATE_LIMIT`, `INVITE_LIMIT` on an email sender, and `RATE_LIMIT`, `INVITE_LIMIT`, `UNKNOWN` on a LinkedIn sender. Clearing `BOUNCE_THRESHOLD` turns bounce protection off until hard bounces recur. Contacts the sender paused on their own resume once it can send again, unless another sender they are pinned to still cannot. Sequences an earlier LinkedIn limit deactivated stay deactivated until they are resumed. Returns 409 for any other health reason, which clears only once its cause is fixed, for example reconnecting the account or fixing DNS; for an archived sender; or when the sender's health changed while the request ran. **[Required scope](/using-the-api/scopes/):** `senders:update` **[Rate limit category](/using-the-api/rate-limits/):** Write ### Path Parameters - `id: string` Unique identifier of the sender to mark healthy. ### Body Parameters - `body: optional object { }` ### Returns - `SenderMarkHealthyResponse object { id, archivedAt, channel, 9 more }` - `id: string` Unique identifier of the sender. - `archivedAt: string` When the sender was archived, or null if it is active. Archived senders never send. - `channel: "EMAIL" or "LINKEDIN"` Whether this sender sends email or LinkedIn messages. - `"EMAIL"` - `"LINKEDIN"` - `createdAt: string` When the sender was created. - `emailAddress: string` The address email from this sender is sent from. Null for LinkedIn senders, or when the connected account has no address. - `health: "UNVERIFIED" or "HEALTHY" or "UNHEALTHY"` `HEALTHY` can send. `UNHEALTHY` cannot send until `healthReason` is resolved. `UNVERIFIED` means no health verdict yet: an email sender in this state cannot send until it passes a health check, while a LinkedIn sender is never health-checked, so a working LinkedIn sender is usually `UNVERIFIED` and can send. - `"UNVERIFIED"` - `"HEALTHY"` - `"UNHEALTHY"` - `healthReason: string` Why the sender is `UNHEALTHY` or `UNVERIFIED`, for example `ACCOUNT_DISCONNECTED`, `BOUNCE_THRESHOLD` or `INVITE_LIMIT`; null when healthy. - `objectType: "sender"` Always `sender`. - `"sender"` - `owner: string` Member ID of the person who owns this sender, or null when no workspace membership can be resolved. - `pacing: object { EMAIL, LINKEDIN_INVITE, LINKEDIN_MESSAGE }` How this sender paces each step type it sends, keyed by sequence step type: `EMAIL` for an email sender; `LINKEDIN_INVITE` and `LINKEDIN_MESSAGE` for a LinkedIn sender. - `EMAIL: optional object { dailyLimit, maxGapSeconds, minGapSeconds }` Email steps. Present only on an email sender. - `dailyLimit: number` Most sends of this step type in any rolling 24 hours. - `maxGapSeconds: number` Upper bound of the minimum spacing, in seconds. Before each send, a minimum spacing is drawn at random between `minGapSeconds` and this value, and the send waits until that long after the previous one. Sends can be further apart, for example outside the send window or once `dailyLimit` is reached. Null means the minimum spacing is always `minGapSeconds`. - `minGapSeconds: number` Lower bound of the minimum spacing between two of its sends, in seconds. - `LINKEDIN_INVITE: optional object { dailyLimit, maxGapSeconds, minGapSeconds }` LinkedIn connection requests. Present only on a LinkedIn sender. - `dailyLimit: number` Most sends of this step type in any rolling 24 hours. - `maxGapSeconds: number` Upper bound of the minimum spacing, in seconds. Before each send, a minimum spacing is drawn at random between `minGapSeconds` and this value, and the send waits until that long after the previous one. Sends can be further apart, for example outside the send window or once `dailyLimit` is reached. Null means the minimum spacing is always `minGapSeconds`. - `minGapSeconds: number` Lower bound of the minimum spacing between two of its sends, in seconds. - `LINKEDIN_MESSAGE: optional object { dailyLimit, maxGapSeconds, minGapSeconds }` LinkedIn messages. Present only on a LinkedIn sender. - `dailyLimit: number` Most sends of this step type in any rolling 24 hours. - `maxGapSeconds: number` Upper bound of the minimum spacing, in seconds. Before each send, a minimum spacing is drawn at random between `minGapSeconds` and this value, and the send waits until that long after the previous one. Sends can be further apart, for example outside the send window or once `dailyLimit` is reached. Null means the minimum spacing is always `minGapSeconds`. - `minGapSeconds: number` Lower bound of the minimum spacing between two of its sends, in seconds. - `replyToAddress: string` SMTP senders only: the connected mailbox replies are sent to and read from. Null for other senders. - `transport: "SMTP" or "OAUTH"` How an email sender sends: `SMTP` through its own mail server, `OAUTH` through its connected Google or Microsoft account. Null for LinkedIn senders. - `"SMTP"` - `"OAUTH"` ### Example ```http curl https://api.lightfield.app/v1/senders/$ID/mark_healthy \ -X POST \ -H 'Lightfield-Version: 2026-03-01' \ -H "Authorization: Bearer $API_KEY" ``` #### Response ```json { "id": "id", "archivedAt": "archivedAt", "channel": "EMAIL", "createdAt": "createdAt", "emailAddress": "emailAddress", "health": "UNVERIFIED", "healthReason": "healthReason", "objectType": "sender", "owner": "owner", "pacing": { "EMAIL": { "dailyLimit": -9007199254740991, "maxGapSeconds": -9007199254740991, "minGapSeconds": -9007199254740991 }, "LINKEDIN_INVITE": { "dailyLimit": -9007199254740991, "maxGapSeconds": -9007199254740991, "minGapSeconds": -9007199254740991 }, "LINKEDIN_MESSAGE": { "dailyLimit": -9007199254740991, "maxGapSeconds": -9007199254740991, "minGapSeconds": -9007199254740991 } }, "replyToAddress": "replyToAddress", "transport": "SMTP" } ```