"Connecting OpenAI Codex with antigravity concepts or technology" matching MCP connectors:

Verify email deliverability & find business emails (single or bulk) via the Verifox API.

DNS and email security scanner with 80 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.

AI-powered email outreach platform — send campaigns with deliverability tracking.

MCP server for Nylas — read email, calendars, events and contacts, and send email or create events.

Internet identity for AI agents: register or broker domains, email, DNS - pay by card or USDC.

PDF, photo, email, and file comparison evidence checks with plain-language reports.

Manage Microsoft 365 email, calendar, contacts and inbox rules via the Graph API with OAuth 2.0.

MCP server for e-mail testing: create disposable inboxes, wait for delivery, and extract e-mail content or links - all from your AI agent or test automation workflow. Get a free API key on https://app.zyntra.app/

Test-inbox API for email and SMS: create inboxes, long-poll messages, extract OTPs and links. 34 tools; bearer auth with an mfx_ API key (free tier).

Phone, SMS & email for AI agents. One remote MCP server (Streamable HTTP, OAuth or API-key auth, no local install) exposing call, sms, email, and event tools; also usable via CLI, Python SDK, and OpenAPI. Self-hostable, AGPLv3.

Apollo connects your sales data and outreach tools directly to your agent . Ask it to find leads, look up a company, write and send emails, or check how a campaign is performing. All from a conversation, without opening another tab.

Email validation for Claude and any MCP client — verdicts with evidence, bulk jobs, refunds.

Create, edit, and delete email aliases and manage encrypted file shares directly from your chat. Protect your online privacy with anon.li - Privacy by default. Not by request.

Shared inbox and customer support platform for teams. Manage email conversations, assignments, labels, internal notes, contacts, and replies. 29 tools. Connect with your Helpmonks access token.

Hosted email for AI agents: create inboxes, send, receive, and reply over MCP with scoped API keys

Shipmail MCP server for AI agent custom-domain email inboxes with REST API and webhooks.

AI email inbox and sending tools with attachments, search, live events, and webhooks.

InboxPolicy is an MCP email-verification server for agents. Get an actionable verdict: send, send_with_caution, review, retry_later, or avoid, with confidence and SMTP evidence, plus tools for detailed verification, asynchronous batches, and usage tracking

Stateful email for AI agents — read inboxes, reply in-thread, draft with approval.

Send and Receive email via your own address at your domain or unlimited free inboxes. Send Email Receive email with Agent routes or webhooks Route email to other addresses Add your custom domain (unlimited mailboxes) Add unlimited inboxes 3K emails sent per month free per domain 50K for $10/month