validateMailboxlayerCredential (mailboxlayer/executors.ts)

Validates a Mailboxlayer API key by checking a test email via the /check endpoint.

// Source: https://github.com/oomol-lab/open-connector | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
// Provided via justclaw.it.com; keep this notice with the code.
import type {
  CredentialValidationResult,
  CredentialValidators,
  ProviderExecutors,
  ProviderProxyExecutor,
} from "../../core/types.ts";
import type { ProviderActionHandlers } from "../provider-executors.ts";
import type { ApiKeyProviderContext } from "../provider-executors.ts";

import { compactObject, optionalBoolean, optionalRecord, optionalString } from "../../core/cast.ts";
import { defineApiKeyProviderExecutors } from "../provider-executors.ts";
import { defineProviderProxy } from "../provider-proxy.ts";
import { providerUserAgent, ProviderRequestError } from "../pro

... (truncated -- full source via MCP)