Email MCP Servers for DeepSeek Harness

Email inboxes for agents by the hour: wait for a mail, get the code or link. Pay per call.

Manage Benchmark Email lists and contacts, and read campaign reports: opens, clicks, bounces.

BounceBan MCP — wraps the BounceBan email-verification API (bounceban.com)

Check a domain's email authentication: SPF, DKIM, DMARC, BIMI, MX, MTA-STS, TLS-RPT. Score + fixes.

Disposable email addresses for tests and agents: register, wait for mail, extract codes and links.

Design on-brand emails with your AI, preview them in chat, and send through server-side guardrails.

Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark

Read Mailcoach lists, campaigns and templates; optionally draft campaigns and templates.

Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.

Mailvett: validate emails. MX, provider, disposable/role/free flags, typo fix, verdict.

Verify email deliverability with RFC format, MX, SMTP and disposable-domain checks.

Verify email addresses before you send: honest verdicts, no address kept, EU-hosted.

Reoon MCP — wraps the Reoon Email Verifier API (reoon.com)

Independent MCP server for SimpleLogin alias, mailbox, domain, settings, and account workflows.

Read, search, organize, draft and send business email from your SuperMailOS mailboxes.

Check whether an email address is real and will accept mail before you send to it.

Real-time RFC 5322 email verification, SPF/DMARC DNS audits & B2B leads (x402 Base USDC).

Manage addy.io email aliases, recipients, domains, rules and blocklist.

Real email for AI agents: domains, mailboxes, a unified inbox, wait-for-code, send and reply.

Email for AI agents: its own address, not your Gmail. Invite-only; requires an agent token.

Disposable email inboxes for AI agents: create an address, wait for mail, read OTP codes and links.