verify_send_as
Verify a send-as email alias by sending a confirmation email to ensure the alias is valid and can be used for sending messages through Gmail MCP.
Instructions
Sends a verification email to the specified send-as alias
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| sendAsEmail | Yes | The send-as alias to be verified |
Implementation Reference
- src/index.ts:1220-1231 (registration)Registration of the verify_send_as MCP tool, defining its schema (input: sendAsEmail string) and handler which sends a verification email via the Gmail API's users.settings.sendAs.verify method, wrapped in handleTool for auth handling.server.tool("verify_send_as", "Sends a verification email to the specified send-as alias", { sendAsEmail: z.string().describe("The send-as alias to be verified") }, async (params) => { return handleTool(config, async (gmail: gmail_v1.Gmail) => { const { data } = await gmail.users.settings.sendAs.verify({ userId: 'me', sendAsEmail: params.sendAsEmail }) return formatResponse(data) }) } )
- src/index.ts:1225-1230 (handler)Handler function for verify_send_as tool: authenticates via handleTool, calls Gmail API to verify send-as alias by sending email.async (params) => { return handleTool(config, async (gmail: gmail_v1.Gmail) => { const { data } = await gmail.users.settings.sendAs.verify({ userId: 'me', sendAsEmail: params.sendAsEmail }) return formatResponse(data) }) }
- src/index.ts:1222-1224 (schema)Input schema for verify_send_as tool: requires sendAsEmail as string.{ sendAsEmail: z.string().describe("The send-as alias to be verified") },
- src/index.ts:50-80 (helper)Shared helper function handleTool used by all tools, including verify_send_as, to handle OAuth2 authentication, client creation, and error handling before executing the API call.const handleTool = async (queryConfig: Record<string, any> | undefined, apiCall: (gmail: gmail_v1.Gmail) => Promise<any>) => { try { const oauth2Client = queryConfig ? createOAuth2Client(queryConfig) : defaultOAuth2Client if (!oauth2Client) throw new Error('OAuth2 client could not be created, please check your credentials') const credentialsAreValid = await validateCredentials(oauth2Client) if (!credentialsAreValid) throw new Error('OAuth2 credentials are invalid, please re-authenticate') const gmailClient = queryConfig ? google.gmail({ version: 'v1', auth: oauth2Client }) : defaultGmailClient if (!gmailClient) throw new Error('Gmail client could not be created, please check your credentials') const result = await apiCall(gmailClient) return result } catch (error: any) { // Check for specific authentication errors if ( error.message?.includes("invalid_grant") || error.message?.includes("refresh_token") || error.message?.includes("invalid_client") || error.message?.includes("unauthorized_client") || error.code === 401 || error.code === 403 ) { return formatResponse({ error: `Authentication failed: ${error.message}. Please re-authenticate by running: npx @shinzolabs/gmail-mcp auth`, }); } return formatResponse({ error: `Tool execution failed: ${error.message}` }); } }
- src/index.ts:48-49 (helper)Helper to format tool responses as MCP content blocks.const formatResponse = (response: any) => ({ content: [{ type: "text", text: JSON.stringify(response) }] })