Send to any address

POST

https://api.plusvibe.ai/api/v1/unibox/emails/send

Sends a one-off email to any address — no lead or campaign required. The sender (from) must be one of the email accounts connected to the workspace.

The use case for this endpoint is limited: normal outreach should go through campaigns, and replies to leads through the unibox reply endpoints. It exists for programmatic scenarios such as running an email placement / deliverability test with a third-party provider (sending from your connected account to their seed addresses).

Any reply from the recipient will arrive in the Others folder (see the unibox/other-emails endpoint), since the conversation is not linked to a lead.
IMPORTANT:

The body field accepts HTML, so any quotes or special characters inside it must be escaped when sending as JSON.

to, cc and bcc accept multiple addresses as a comma-separated string.

Request

Authorization

API Key

Add parameter in header

x-api-key

Example:

x-api-key: ********************

Query Params

Body Params application/json

Examples

Responses

🟢200OK

application/json

Email sent

Bodyapplication/json

🟠400Bad Request

🔴500Server Error

Request Example

Shell

JavaScript

Java

Swift

curl --location 'https://api.plusvibe.ai/api/v1/unibox/emails/send?workspace_id=undefined' \
--header 'x-api-key: <api-key>' \
--header 'Content-Type: application/json' \
--data-raw '{
    "subject": "Quick question",
    "from": "sender@account.com",
    "to": "anyone@example.com",
    "body": "<p>Hello there.</p>",
    "cc": "cc@example.com",
    "bcc": "bcc@example.com"
}'

Response Example

200 - Example 1

{
    "status": "success",
    "id": "66b9d78ff91fabf920f6964d"
}

Modified at 2026-07-26 17:00:38

Mark Email Read

Save Email as Draft