Best Alternatives to Leadloadz

Slack MCP Server

Runtime: Remote (SSE)

MCP server providing Slack workspace data access with message history, threads, DMs, user info, and optional message posting.

Slack MCP Server

Runtime: uvx

Read Slack conversations, threads, user info, and search messages from your MCP client.

Signaliz

Runtime: npx

B2B email verification, company signal enrichment, and governed GTM data pipelines.

Microsoft Outlook MCP

Runtime: npx

Microsoft Outlook (mail) MCP server — read, search, and send email through Microsoft Graph.

Lumail

Runtime: npx

Official Lumail email marketing MCP for campaigns, subscribers, and workflows.

Email Verification API

Runtime: Remote (SSE)

Verify emails: syntax, MX records, disposable detection, quality scoring. x402 micropayments.

Line Bot MCP Server

Runtime: npx

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Connects an AI agent to LINE Messaging API for messaging, user profiles, quotas, followers, and rich-menu management.

Gmail MCP

Runtime: npx

MCP server for the Gmail API: search, read and send email, manage drafts, labels and the trash.

Mail Index

Runtime: npx

Local-first, read-only MCP server for recall over your Gmail: search, contacts, threads, digests.

Telnyx

Runtime not confirmed

Official TypeScript library for the Telnyx API

Emailmd

Runtime: npx

Convert markdown to email-safe HTML with linting and live preview via an MCP server or local CLI.

Google Workspace

Runtime: npx

Give AI agents access to Gmail, Calendar, Drive, and more — multi-account, manifest-driven