Alternatives to AgentDiet A2A Indirect Prompt-Injection & Jailbreak Firewall

• Responded15 / 22 checks passed

  receivemail.dev

  receivemail.devVerified

  Disposable email inboxes for agents and tests: create an address, wait for the email. No signup.

  ProductivityCommunication & messaging

  • AI models & agents
  • Productivity & docs

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 77 ms · Last checked 20 hr ago

• Responded15 / 22 checks passed

  VolunteerReminder

  volunteerreminder.comVerified

  Import a volunteer roster and preview shifts. Test-mode until a human enables live SMS.

  ProductivityCommunication & messaging

  • Communication & social

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 128 ms · Last checked 20 hr ago

• Responded15 / 22 checks passed

  IntoDNS.ai DNS & Email Security Scanner

  intodns.aiVerified

  DNS and email security: check SPF, DKIM, DMARC, DNSSEC, DANE and build the records. 45 tools.

  ProductivityCommunication & messaging

  • Productivity & docs
  • Security & identity
  • Cloud & infrastructure

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 156 ms · Last checked 20 hr ago

• Responded15 / 22 checks passed

  SalesBlink Cold Email

  open-salesblinkVerified

  Cold email sequences, leads, templates, senders, inbox, and analytics via the SalesBlink API.

  ProductivityCommunication & messaging

  • Productivity & docs
  • Commerce & marketing

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 207 ms · Last checked 19 hr ago

• Responded15 / 22 checks passed

  Email Deliverability Checker

  kryptoscanVerified

  Check SPF, DKIM, DMARC, blocklists, reverse DNS and email headers against Gmail/Yahoo sender rules.

  ProductivityCommunication & messaging

  • Productivity & docs
  • Cloud & infrastructure

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 318 ms · Last checked 20 hr ago

• Responded15 / 22 checks passed

  YourICP

  youricp.comVerified

  Enrich contacts by email or LinkedIn URL and build targeted B2B audiences.

  ProductivityCommunication & messaging

  • Productivity & docs

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 663 ms · Last checked 20 hr ago

• Responded15 / 22 checks passed

  OSIR Domain Registrar

  osir.comVerified

  Register, renew, transfer, and manage domains, DNS, VPS, and email with 106 tools. By OSIR.

  ProductivityCommunication & messaging

  • Productivity & docs
  • Cloud & infrastructure

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 666 ms · Last checked 20 hr ago

• Responded15 / 22 checks passed

  Faxbeep

  faxbeep.comVerified

  Test fax numbers for AI agents. Send a test fax or scan-to-email, then read what Faxbeep received.

  ProductivityCommunication & messaging

  • AI models & agents
  • Productivity & docs

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 730 ms · Last checked 20 hr ago

• Responded15 / 22 checks passed

  ProSignature email signatures

  prosignature.coVerified

  Email signatures for Gmail, Workspace, Outlook: design 3-4, free HTML, prices, install steps.

  ProductivityCommunication & messaging

  • Productivity & docs
  • Design & media

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 870 ms · Last checked 20 hr ago

• Responded15 / 22 checks passed

  Agent Inbox — direct agent-to-agent messaging with receipts

  a2awire.comVerified

  Free agent-to-agent inbox: send, claim, ack. Be born in one signed call, no signup.

  ProductivityCommunication & messaging

  • AI models & agents
  • Communication & social

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 982 ms · Last checked 20 hr ago

• Responded15 / 22 checks passed

  TradeGraph

  tradegraph.rinda.aiVerified

  An export sales team for consumer brands, inside your AI: markets, buyers, emails and pricing.

  ProductivityCommunication & messaging

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 1607 ms · Last checked 20 hr ago

• Responded15 / 22 checks passed

  BlackVeil DNS & Email Security Scanner

  blackveilsecurity.comVerified

  DNS and email security scanner with 82 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.

  ProductivityCommunication & messaging

  • Productivity & docs
  • Security & identity
  • Cloud & infrastructure

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 1718 ms · Last checked 20 hr ago

• Responded15 / 22 checks passed

  TamingDNS

  tamingdns.comVerified

  Check SPF, DKIM, DMARC, MX, MTA-STS, TLS-RPT, BIMI, DANE and DNSSEC, and analyse email headers.

  ProductivityCommunication & messaging

  • Productivity & docs

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 6094 ms · Last checked 20 hr ago

• Outdated check14 / 22 checks passed

  Voodoo SMS MCP by usefulapi

  usefulapi.ioVerified

  Read Voodoo SMS credits, reports, inbox and lists; send one SMS; manage the opt-out blacklist.

  ProductivityCommunication & messaging

  • Communication & social

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 51 ms · Last checked 1 day ago

• Outdated check14 / 22 checks passed

  Spryng MCP by usefulapi

  usefulapi.ioVerified

  Check credits, read sent messages, send or cancel scheduled SMS in Spryng.

  ProductivityCommunication & messaging

  • Communication & social

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 52 ms · Last checked 1 day ago

• Outdated check14 / 22 checks passed

  NeverBounce MCP by usefulapi

  usefulapi.ioVerified

  MCP server for NeverBounce — business email verification, credits and bulk jobs.

  ProductivityCommunication & messaging

  • Productivity & docs

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 52 ms · Last checked 1 day ago

• Outdated check14 / 22 checks passed

  Missive MCP by usefulapi

  usefulapi.ioVerified

  Read email/chat conversations, messages, contacts and teams; draft, send and update threads.

  ProductivityCommunication & messaging

  • Productivity & docs
  • Communication & social

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 52 ms · Last checked 1 day ago

• Outdated check14 / 22 checks passed

  Notifyre MCP by usefulapi

  usefulapi.ioVerified

  Read Notifyre SMS, replies, faxes, numbers, prices and contacts; send SMS to up to 10 numbers.

  ProductivityCommunication & messaging

  • Communication & social

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 53 ms · Last checked 1 day ago

• Outdated check14 / 22 checks passed

  Nylas MCP by usefulapi

  usefulapi.ioVerified

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

  ProductivityCommunication & messaging

  • Productivity & docs

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 55 ms · Last checked 1 day ago

• Outdated check14 / 22 checks passed

  FireText MCP by usefulapi

  usefulapi.ioVerified

  Read FireText credit, messages and reports; send an SMS to up to 10 numbers; manage opt-outs.

  ProductivityCommunication & messaging

  • Communication & social

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 55 ms · Last checked 1 day ago

• Outdated check14 / 22 checks passed

  Trumpia MCP by usefulapi

  usefulapi.ioVerified

  Read Trumpia lists, subscribers, keywords and reports; add contacts and send SMS or email campaigns.

  ProductivityCommunication & messaging

  • Productivity & docs
  • Communication & social

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 56 ms · Last checked 1 day ago

• Outdated check14 / 22 checks passed

  Salsa Engage MCP by usefulapi

  usefulapi.ioVerified

  Search supporters, donations, emails and segments; create or update supporters in Salsa Engage.

  ProductivityCommunication & messaging

  • Search & web data

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 57 ms · Last checked 1 day ago

• Outdated check14 / 22 checks passed

  Loops MCP by usefulapi

  usefulapi.ioVerified

  Manage Loops contacts, mailing lists, and transactional/event emails.

  ProductivityCommunication & messaging

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 58 ms · Last checked 1 day ago

• Outdated check14 / 22 checks passed

  WaiverFile MCP by usefulapi

  usefulapi.ioVerified

  Read WaiverFile waivers, events, forms and SMS opt-ins; create and update events, invite managers.

  ProductivityCommunication & messaging

  • Communication & social

  • Passed: Handshake
  • Passed: Tools listed
  • Passed: Updated recently

  Median latency 60 ms · Last checked 1 day ago

Back to AgentDiet A2A Indirect Prompt-Injection & Jailbreak Firewall