Communications
Messaging, customer support and meeting applications. Reading information and sending messages have different effects and permissions.
Services are ordered by documented operations, attributed reports and current documentation. 115 services are classified here. Each card shows the interfaces a service offers; open it for access requirements and sources.
Categories · Tasks · Interfaces · How listings are checked
Mailinator
Mailinator CLI lists messages in private test inboxes for automated email and SMS workflows.
Communications · Developer tools · CLI
CLI · Access documentation verifiedImprovMX
Email forwarding service with a documented API for managing domains.
Communications · Developer tools
API · Access documentation verifiedD7 Networks
Retrieve the current SMS price offerings for the authenticated D7 account.
Communications · Developer tools
API · Access documentation verifiedCrisp
Crisp provides customer messaging and a REST API for retrieving workspace website details.
customer-support · Communications · Developer tools
API · Access documentation verifiedcheckmails
Email verification service with a REST API for synchronous single-address checks and enriched verification results.
Communications · verification · API
API · Access documentation verifiedMaileroo
Maileroo provides email infrastructure and account-management APIs.
Communications · Developer tools
API · Access documentation verifiedBolna
Bolna provides APIs for configuring conversational voice AI agents; its user-info endpoint lets an account holder verify API access and inspect account status, wallet balance, and concurrency.
artificial-intelligence · Communications · api
API · Access documentation verifiedQuo
Quo is a shared business phone system for calls, texts and contacts; it was formerly OpenPhone.
Communications · business-phone · api
API · Access documentation verifiedAPIVerve
APIVerve is an API platform with a catalog of utility services, including Email Validator for checking address format, mail-domain records, disposable and role-account status, and deliverability signals.
Developer tools · data-validation · Communications
API · Access documentation verifiedMailboxValidator
Email validation API that returns validation results for one email address in JSON or XML.
Developer tools · Communications
API · Access documentation verifiedOneSignal
OneSignal is a customer messaging platform for push notifications, email, SMS, and in-app messaging.
Communications · Developer tools
API · Access documentation verifiedHunter
Email discovery service with an API to retrieve information about the Hunter account and API usage.
Developer tools · Communications · API
API · Access documentation verifiedmailfloss
Email verification API that accepts email lists through a batch job.
Communications · verification · API
API · Access documentation verifiedVeriphone
Veriphone validates phone numbers and identifies country, carrier, and line type through its API and bulk tools.
phone-validation · Communications · Developer tools
API · Access documentation verifiedInboxSink
An email-testing service with an API for creating disposable inboxes and waiting for messages in signup-flow tests.
Developer tools · Communications · testing
API · Access documentation verifiedMailSlurp
MailSlurp provides programmable email inboxes and APIs for testing and automating email workflows.
Communications · Developer tools · testing
API · Access documentation verifiedZoom
A communications platform for video meetings, team collaboration and related communication services.
Communications
MCP · Documentation checked: 2026-10-06API · Access documentation verifiedMCP · Documentation checked: 2026-10-06MCP · Documentation checked: 2026-10-06MCP · Documentation checked: 2026-10-06MCP · Documentation checked: 2026-10-06MCP · Documentation checked: 2026-10-06MCP · Documentation checked: 2026-10-06Bouncer
Bouncer provides email verification and deliverability checks through a real-time API.
Communications · verification · API
API · Access documentation verifiedAPI · Documentation checked: 2026-10-09SMTP2GO
Email delivery service with a REST API for sending a JSON email message.
Communications · Developer tools · API
API · Access documentation verifiedEmail Spam Tester
Email deliverability testing service with an HTTP API that reserves a one-use test inbox and returns spam and delivery diagnostics after a real message is sent.
Communications · deliverability · testing
API · Access documentation verifiedmailmcp
mailmcp is a hosted email connector for Claude and ChatGPT that can list mailbox accounts and their configured permissions through a documented MCP server.
Communications · mcp · Productivity and collaboration
MCP · Access documentation verifiedTemp Mail
Temp mail protects your privacy and keeps your inbox spam-free
Communications · privacy · Developer tools
API · Access documentation verifiedDropMail Disposable Email API
DropMail provides a disposable-email GraphQL API for creating temporary inbox sessions and reading incoming messages.
Communications · disposable email · GraphQL API
API · Access documentation verifiedBouncify
Verify one email address through Bouncify's documented email-validation API and receive its validation result.
Communications · email-validation · deliverability · api
API · Access documentation verifiedAPI · Documentation checked: 2026-10-11