Best AI Email Tools (2026)

Email SDK

Email

A TypeScript email SDK for unified email sending with Resend, SMTP, Postmark, SendGrid, Mailgun, Unosend, AWS SES, fallbacks, plugins, and a local CLI.

Plunk

Email

Send transactional emails, run marketing campaigns, and automate workflows — all open-source and self-hostable. $0.001/email, no contact limits.

Cora

AI Agents

Cora is your $150,000 chief of staff that only costs $20 per month. It screens your inbox, drafts responses in your voice, and briefs you on the rest twice daily.

Nitrosend

Email

Transactional email, flows and on-brand newsletters from Claude, ChatGPT, Codex or any AI agent. An AI that does your email marketing - free to start.

Exo

Email

An open source, AI-native desktop email client. Every email gets analyzed, prioritized, and drafted before you open it.

Stamp

AI Agents

The AI Secretary that handles your email and calendar for you.

Odo

AI Agents

Imagine hiring an assistant for your emails. Odo flags what needs your attention, writes drafts in your own style, and can do any task that you do with your inbox.

Sutro

Email

The email client where your agents work alongside you. Connect Claude, OpenClaw, or any agent — they read, draft, and act right in your inbox.

Lumbox

AI Agents

Email infrastructure for AI agents. Inboxes, OTP extraction, send and reply, encrypted credential vault, browser automation. One API. Free to start.

AI Inbx

Email

Purpose-built email infrastructure for AI agents. Send and receive emails with smart contextual threading, webhook support, and seamless API integration. Free during beta.

Roger

Sales

Roger's AI engine handles everything: finding prospects, writing personalized emails, and booking meetings. Save 90% of your SDRs' time.

Mocke

Email

Mocke is a Cold Email Agent designed to streamline the process of sending cold emails. It facilitates effective outreach for businesses and individuals looking to connect with potential clients.

Lemon

AI Agents

Lemon is the first Al agent that turns your voice instructions into finished tasks. Reply to messages, ask questions, and delegate tasks without ever leaving your current tab.

AutoSend

Email

AutoSend is a lightweight SendGrid alternative for transactional and marketing emails. Simple, modern, and built to scale.

inbound

Email

Complete email infrastructure for modern applications. Send transactional emails, receive inbound messages, and build AI email agents with our TypeScript SDK and webhook API.

Dex

Productivity

Dex turns your browser into a single AI workspace — one brain that knows your tasks, your context, and how to move your work forward.

Holo

Marketing

Skip the tools, templates, and tabs. This is your content system, built to scale. From ads, emails and social posts. Core marketing areas? Covered.

April

Email

April - AI voice assistant that manages email and calendar hands-free. Achieve inbox zero while driving. Save 2+ hours daily with natural voice commands.

Shortwave

Email

Agentic AI that helps you organize, write, search, schedule, and more with just a prompt

Warmy

Email

The most advanced email deliverability tool with an AI-driven algorithm to make your email channel reliable. Explore Warmy now!

new.email

Email

Get access to the new way to build emails.

FinalScout

Sales

Extract valid email addresses from LinkedIn & craft tailored emails based on LinkedIn profile with ChatGPT, guaranteeing up to 98% email deliverability.

Alicent

Writing

The ChatGPT Chrome extension to create compelling copy, fast.

Fyxer AI Executive Assistant

Email

Fyxer AI Executive Assistant helps you manage your emails and meetings efficiently, saving you time every day. It drafts responses in your tone and takes meeting notes, ensuring you stay organized and productive.

Wishpond

Marketing

Wishpond makes it easy for marketers to create landing pages and contests, track leads, send emails and more.

Klaviyo

Marketing

Powerful automation platform for email marketing and SMS with AI features for faster, efficient growth. Turn your customer data into hyper-personalized messages.

CoolOutreachAI

Email

Write hyper personalized and relevant cold email sequence instantly with generative AI. Make every prospect feel valued.