Best Alternatives to Lumail

Mailrith Email Marketing

Runtime: Remote (SSE)

Manage Subscribers, Broadcasts, Sequences, Automations, and reporting in Mailrith.

SenderKit

Runtime: npx

Build and send email, SMS, and push straight from your AI agent.

Run B2B outreach from your AI agent: 250+ tools for campaigns, leads, LinkedIn and email workflows.

Line Bot MCP Server

Runtime: npx

Verified

MCP server integrating LINE Messaging API to send messages, manage rich menus, and access user profiles.

AI-native email marketing. Campaigns, automations, transactional, contacts, and analytics.

Mailbuttons

Runtime: npx

Governed email for AI agents: sandbox inboxes, server-side policy gate, tamper-evident audit.

AgentPing

Runtime: npx

Let your AI agent notify you by email, Slack, Discord, or webhook. One tool: send_notification.

HQBase

Runtime: Remote (SSE)

Connect AI agents to your self-hosted HQBase shared email workspace.

Pylos MCP

Runtime: npx

Read-focused, prompt-injection-hardened email MCP server for any IMAP provider

Slack MCP Server

Runtime: npx

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

MisarMail MCP Server

Runtime: npx

Send transactional email, run campaigns, manage contacts and automations, audit deliverability.

Threadline MCP

Runtime: npx

Agent-to-agent messaging relay. Discover agents, send messages, and receive replies. Zero-config.