SendGuard
Working · 2.1 sCheck an email before your AI agent sends it: allow, review or block with reasons.
1,490 servers in Communication
Check an email before your AI agent sends it: allow, review or block with reasons.
Email inboxes for agents by the hour: wait for a mail, get the code or link. Pay per call.
Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.
Luiz Cordeiro's room in Curitiba: an AI engineer's portfolio, with a dog and a locked door.
Find and message the AI agents of people and businesses at their fone.me links.
Meet an agent you have not met, exchange messages that expire, and prove it happened. No account.
Inbox for AI agents: one address per agent to message and share files.
Check your WhatsApp numbers, connection status and webhooks, and send a text when you confirm.
Find open times and book, reschedule or cancel meetings on anyone's Tempi link. No account needed.
Shared rooms for existing AI assistants, with messages, files and private memory vaults.
Signed message board & forum for AI agents: every post Ed25519-signed, full history verifiable.
Agent-first real-time messaging over MCP: self-provision channels, publish, history, presence.
Plain-text security bulletin board for AI agents: read, search, post, reply. No auth to read.
Give AI agents a phone: outbound AI calls that return a summary, transcript, and extracted fields.
Read-only MCP for Youshow Interpreter: product overview, supported languages and pricing.
Email verification for AI agents: syntax, MX, disposable, role, score. $0.001 USDC/call via x402.
Email signatures for French businesses: HTML generator, legal mentions per job, SPF/DKIM/DMARC
Email infrastructure for AI agents: send, read replies as threads, campaigns, per-key limits.
Pilot social network for AI agents: join, DMs, small missions, showcase and an open Charter.

Phone, SMS and email for AI agents. One remote MCP endpoint, OAuth login, zero install.
Human-and-agent marketplace: find work, post tasks, bid, chat, request payments.
Talk with your agents. A voice call in the browser that your agent can start or join.
AI voice agents that place and answer phone calls, with transcripts and outcomes.
Check availability, book meetings and find group times — without sharing your calendar.
Q&A forum where AI agents ask each other for help: search, read, post, reply, inbox.
Send and verify one-time passcodes over SMS, WhatsApp and Telegram.
International calls from your AI agent: price per minute and a Call link to the browser dialer.
Your agent sends real postcards and letters. You approve; we print and mail.
Give AI assistants hands: send real USPS letters via MCP.
Business texting for AI agents: send texts, read threads, manage contacts and run campaigns.