Nodemailer

Node.js library for sending email over SMTP (or a provider's transport), with attachments, HTML bodies and DKIM signing.

Visit nodemailer.com ↗Pricing & calculator Alternatives

Ask your AI about this, with this page as the source:ChatGPT ↗Claude ↗Perplexity ↗

Where it fits

Transactional Email · SMTP librarySending email from Node.js through any SMTP server or provider, without tying your code to one vendor's SDK.Trade-off: Only sends — deliverability, bounces, suppression lists and logs come from whatever SMTP service is behind it.

How Nodemailer itself is built

2 tools, from its own code, website and Product Hunt page.

Amazon SES

Hetzner Cloud

Who uses it

No maker's live product on record yet, and 173 open-source projects that declare it in their code.

Declared in code 173How evidence is collected →

We haven't found a maker's live product that uses Nodemailer yet — only the open-source projects below, which declare it in their code.

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alga-psa An open source MSP PSA from Nine MindsTransactional EmailIn its code · source ↗

atom Atom Agent, Open-Source Governed AI Agent Platform for Self-Hosted AutomationTransactional EmailIn its code · source ↗

eliza Open source agentic operating systemTransactional EmailIn its code · source ↗

ever-gauzy Ever® Gauzy™ - Open Business Management Platform (ERP/CRM/HRM/ATS/PM) - https://gauzy.coTransactional EmailIn its code · source ↗

ever-works Ever® Works™ - The Workshop for AI. An open agentic runtime that autonomously researches…Transactional EmailIn its code · source ↗

hexclave The user infrastructure platform. You choose the frontend, backend, and database. Hexcla…Transactional EmailIn its code · source ↗

kodus-ai AI Code Review with Full Control Over Model Choice and Costs.Transactional EmailIn its code · source ↗

mirage The World's First Virtual Terminal for AI AgentsTransactional EmailIn its code · source ↗

nao 👾 nao is an open source analytics agent. (1) Create context with nao-core cli, (2) depl…Transactional EmailIn its code · source ↗

nocodb 🔥 🔥 🔥 A Free & Self-hostable Airtable AlternativeTransactional EmailIn its code · source ↗

pipeshub-ai PipesHub is an open-source platform for securely connecting enterprise knowledge to AI.…Transactional EmailIn its code · source ↗

supercli The open source harness agentTransactional EmailIn its code · source ↗

typebot.io 💬 Typebot is a powerful chatbot builder that you can self-host.Transactional EmailIn its code · source ↗

hash 🚀 The open-source, multi-tenant platform for self-building knowledge graphs and simulat…Transactional EmailIn its code · source ↗

plasmic Visual builder for React. Build apps, websites, and content. Integrate with your codebase.Transactional EmailIn its code · source ↗

sourcebot Sourcebot is a self-hosted tool that helps humans and agents understand your codebase.Transactional EmailIn its code · source ↗

t3code T3 Code. The open-source control plane for coding agents.Transactional EmailIn its code · source ↗

Cal.com Open-source scheduling platform: a Calendly alternative you can self-host or use hosted,…Transactional EmailIn its code · source ↗

Directus Instant REST/GraphQL API and admin app layered on top of any SQL database, usable as a h…Transactional EmailIn its code · source ↗

documenso Open-source e-signature platform and DocuSign alternative that can be self-hosted or use…Transactional EmailIn its code · source ↗

Formbricks Open-source survey and experience-management platform for in-app, website and link-based…Transactional EmailIn its code · source ↗

giselle Giselle is an open-source tool for building and running AI workflows in a visual node ed…Transactional EmailIn its code · source ↗

GrowthBook Open-source feature flagging and A/B testing platform with built-in statistical analysis…Transactional EmailIn its code · source ↗

Open source: a project that declares Nodemailer as a dependency in its public code — verifiable, but not necessarily a live product.

Alternatives to Nodemailer

All alternatives by situation →

ResendA modern developer API with email templates written as React components.Free tier944 makers · transactional email

PostmarkDeliverability when the mail has to arrive within seconds.Free tier615 makers · transactional email

MailgunHigh volume and inbound email parsing and routing.Free tier49 makers · transactional email

Amazon SESSending at high volume, where cost per email matters more than tooling.4 makers · transactional email

SendGridOne vendor for both jobs at large scale.1061 makers · transactional email

PlunkTransactional emails, event-triggered sequences and newsletters in one open-source tool, billed per email with no monthly fee.Open sourceFree tier5 makers · transactional email

useSendAn open-source Resend-style dashboard and API for transactional and marketing mail, on top of Amazon SES prices.Open sourceFree tier

Questions makers ask about Nodemailer

Is Nodemailer free?

Yes — it is free, open-source software.

Is Nodemailer open source or self-hostable?

Open source, and you can self-host it. source ↗

Can AI coding agents work with Nodemailer?

No llms.txt, official MCP server or CLI found yet.

Who uses Nodemailer?

No maker's live product we track yet; 173 open-source projects declare it in their code. source ↗