Skip to content
Lightfield Lightfield
API Reference
Email

Log an email

POST/v1/emails/log

Logs an email that no connected account will sync, such as history from a previous CRM or a mailbox export. The email appears on account, contact, and opportunity timelines at $sentAt and threads with related emails. $sentAt must be in the past, and at least one participant must be a workspace member and one must be external.

The Message-ID header (or a generated one) identifies the email. If an email with the same Message-ID already exists, the request returns 409 and writes nothing. Group emails into threads with $threadId, or pass In-Reply-To and References in headers.

Privacy defaults to the most permissive setting among the participants’ connected accounts, else METADATA. Set $privacySetting to override it. Logging an email never sends it, never cancels a sequence enrollment, and creates records only when autoCreateRecords is true. Filter out personal and non-sales mail before logging.

Supports idempotency via the Idempotency-Key header.

Required scope: emails:create

Rate limit category: Write

Body ParametersJSONExpand Collapse
fields: object { "$from", "$sentAt", "$bcc", 6 more }

Field values for the logged email. System fields use a $ prefix. Required: $sentAt and $from, plus at least one recipient across $to, $cc, and $bcc.

"$from": string

The sender address. This field accepts a single email address.

"$sentAt": string

When the email was sent, in ISO 8601 format. Must be in the past.

"$bcc": optional array of string

Bcc-recipient addresses.

"$body": optional object { html, text }

The email body. Pass whichever parts you have.

html: optional string

The HTML part of the email.

text: optional string

The plain-text part of the email.

"$cc": optional array of string

Cc-recipient addresses.

"$privacySetting": optional "FULL" or "METADATA"

The privacy setting for the email (FULL or METADATA). Defaults to the most permissive setting among the participants’ connected accounts, else METADATA.

One of the following:
"FULL"
"METADATA"
"$subject": optional string

The email subject line.

"$threadId": optional string

Any stable grouping key. Emails with the same value share a thread. Overrides threading derived from headers.

minLength1
"$to": optional array of string

To-recipient addresses.

autoCreateRecords: optional boolean

When true, the post-create sync may create account and contact records for unknown external participants.

headers: optional map[string]

Raw RFC 5322 headers, passed through as read (any key case). Only Message-ID, In-Reply-To, and References are used. At most 64 KB.

ReturnsExpand Collapse
EmailLogResponse object { id, accessLevel, createdAt, 6 more }
id: string

Unique identifier for the entity.

accessLevel: "FULL" or "METADATA"

The caller’s resolved access level for this email.

One of the following:
"FULL"
"METADATA"
createdAt: string

ISO 8601 timestamp of when the entity was created.

fields: map[object { value, valueType } ]

Map of field names to their typed values. System fields are prefixed with $ (e.g. $name, $email); custom attributes use their bare slug.

value: string or number or boolean or 3 more

The field value, or null if unset.

One of the following:
string
number
boolean
array of string
Address object { city, country, latitude, 5 more }
city: optional string

City name.

country: optional string

2-letter ISO 3166-1 alpha-2 country code.

latitude: optional number

Latitude coordinate.

longitude: optional number

Longitude coordinate.

postalCode: optional string

Postal or ZIP code.

state: optional string

State or province.

street: optional string

Street address line 1.

street2: optional string

Street address line 2.

FullName object { firstName, lastName }
firstName: optional string

The contact’s first name.

lastName: optional string

The contact’s last name.

valueType: "ADDRESS" or "CHECKBOX" or "CURRENCY" or 12 more

The data type of the field.

One of the following:
"ADDRESS"
"CHECKBOX"
"CURRENCY"
"DATETIME"
"EMAIL"
"FULL_NAME"
"MARKDOWN"
"MULTI_SELECT"
"NUMBER"
"SINGLE_SELECT"
"SOCIAL_HANDLE"
"TELEPHONE"
"TEXT"
"URL"
"HTML"
objectType: "email"

Always email.

relationships: map[object { cardinality, objectType, values, directions } ]

Map of relationship names to their associated entities. System relationships are prefixed with $ (e.g. $owner, $contact). A self-referential relationship keeps its merged values and includes optional directional values. List filters select the current record’s role with :asSource or :asDestination, for example ?parent:asSource[contains]=account_id.

cardinality: string

Whether the relationship is has_one or has_many.

objectType: string

The type of the related object (e.g. account, contact).

values: array of string

IDs of the related entities.

directions: optional object { asDestination, asSource }

Directional values for a self-referential relationship. List filters use the relationship key with :asSource or :asDestination; writes continue to use the bare key.

asDestination: object { cardinality, values }

The current record is the destination (incoming) endpoint.

cardinality: "HAS_ONE" or "HAS_MANY"

Whether this endpoint direction is HAS_ONE or HAS_MANY.

One of the following:
"HAS_ONE"
"HAS_MANY"
values: array of string

IDs of the related entities in this direction.

asSource: object { cardinality, values }

The current record is the source (outgoing) endpoint.

cardinality: "HAS_ONE" or "HAS_MANY"

Whether this endpoint direction is HAS_ONE or HAS_MANY.

One of the following:
"HAS_ONE"
"HAS_MANY"
values: array of string

IDs of the related entities in this direction.

updatedAt: string

ISO 8601 timestamp of when the entity was last updated, or null.

externalId: optional string

External identifier for the entity, or null if unset.

Log an email

curl https://api.lightfield.app/v1/emails/log \
    -H 'Content-Type: application/json' \
    -H 'Lightfield-Version: 2026-03-01' \
    -H "Authorization: Bearer $API_KEY" \
    -d '{
          "fields": {
            "$from": "$from",
            "$sentAt": "$sentAt"
          }
        }'
{
  "id": "eml_cm0abc456def789",
  "accessLevel": "FULL",
  "createdAt": "2026-05-01T09:00:00.000Z",
  "fields": {
    "$subject": {
      "value": "Following up on our chat",
      "valueType": "TEXT"
    },
    "$sentAt": {
      "value": "2026-05-01T08:30:00.000Z",
      "valueType": "DATETIME"
    },
    "$from": {
      "value": [
        "sales@acme.com"
      ],
      "valueType": "EMAIL"
    },
    "$to": {
      "value": [
        "lead@example.com"
      ],
      "valueType": "EMAIL"
    },
    "$cc": {
      "value": [
        "string"
      ],
      "valueType": "EMAIL"
    },
    "$bcc": {
      "value": [
        "string"
      ],
      "valueType": "EMAIL"
    },
    "$privacySetting": {
      "value": "string",
      "valueType": "TEXT"
    },
    "$body": {
      "value": "<p>Hi there,</p><p>Following up on our chat earlier this week.</p>",
      "valueType": "HTML"
    }
  },
  "httpLink": null,
  "objectType": "email",
  "relationships": {
    "$account": {
      "cardinality": "has_many",
      "objectType": "account",
      "values": [
        "acc_cm4stu901uvw234"
      ],
      "directions": {
        "asDestination": {
          "cardinality": "HAS_ONE",
          "values": [
            "string"
          ]
        },
        "asSource": {
          "cardinality": "HAS_ONE",
          "values": [
            "string"
          ]
        }
      }
    },
    "$contact": {
      "cardinality": "has_many",
      "objectType": "contact",
      "values": [
        "con_cm2ghi789jkl012"
      ],
      "directions": {
        "asDestination": {
          "cardinality": "HAS_ONE",
          "values": [
            "string"
          ]
        },
        "asSource": {
          "cardinality": "HAS_ONE",
          "values": [
            "string"
          ]
        }
      }
    }
  },
  "updatedAt": "2026-05-01T10:00:00.000Z",
  "externalId": "externalId"
}
Returns Examples
{
  "id": "eml_cm0abc456def789",
  "accessLevel": "FULL",
  "createdAt": "2026-05-01T09:00:00.000Z",
  "fields": {
    "$subject": {
      "value": "Following up on our chat",
      "valueType": "TEXT"
    },
    "$sentAt": {
      "value": "2026-05-01T08:30:00.000Z",
      "valueType": "DATETIME"
    },
    "$from": {
      "value": [
        "sales@acme.com"
      ],
      "valueType": "EMAIL"
    },
    "$to": {
      "value": [
        "lead@example.com"
      ],
      "valueType": "EMAIL"
    },
    "$cc": {
      "value": [
        "string"
      ],
      "valueType": "EMAIL"
    },
    "$bcc": {
      "value": [
        "string"
      ],
      "valueType": "EMAIL"
    },
    "$privacySetting": {
      "value": "string",
      "valueType": "TEXT"
    },
    "$body": {
      "value": "<p>Hi there,</p><p>Following up on our chat earlier this week.</p>",
      "valueType": "HTML"
    }
  },
  "httpLink": null,
  "objectType": "email",
  "relationships": {
    "$account": {
      "cardinality": "has_many",
      "objectType": "account",
      "values": [
        "acc_cm4stu901uvw234"
      ],
      "directions": {
        "asDestination": {
          "cardinality": "HAS_ONE",
          "values": [
            "string"
          ]
        },
        "asSource": {
          "cardinality": "HAS_ONE",
          "values": [
            "string"
          ]
        }
      }
    },
    "$contact": {
      "cardinality": "has_many",
      "objectType": "contact",
      "values": [
        "con_cm2ghi789jkl012"
      ],
      "directions": {
        "asDestination": {
          "cardinality": "HAS_ONE",
          "values": [
            "string"
          ]
        },
        "asSource": {
          "cardinality": "HAS_ONE",
          "values": [
            "string"
          ]
        }
      }
    }
  },
  "updatedAt": "2026-05-01T10:00:00.000Z",
  "externalId": "externalId"
}