SendLit vs Listmonk

October 24, 2026

Listmonk and SendLit are both open source, both can be self-hosted, and both send through an email provider you choose instead of their own mail servers. They are built for different jobs, though. This post compares them on the things you'd check before picking one, and links to each project's own docs so you can verify every point. Competitor details were checked against Listmonk's official site, docs and repository in October 2026.

Who each tool suits best

Listmonk suits you if...

You want one lightweight app for newsletters and mailing lists. Listmonk describes itself as a standalone, self-hosted newsletter and mailing list manager, packed into a single binary, that uses PostgreSQL as its data store. The backend is written in Go.
You send to large lists on small hardware. The Listmonk site cites a production campaign of more than 7 million emails that used a fraction of one CPU core and peaked at 57 MB of RAM.
You're comfortable with SQL. You can query and segment subscribers with SQL expressions, and templates use Go templating.
You also want to send SMS or push messages. Listmonk's Messengers push campaign messages to any HTTP service, which can relay them as SMS, FCM notifications and so on.

SendLit suits you if...

You want automated sequences as well as newsletters. SendLit runs one-off broadcasts and multi-step sequences that enroll contacts when they subscribe or when a tag is added or removed.
You manage email for several brands, clients or customers. Each SendLit team has its own contacts, templates, sending provider, API keys and quota, and a platform can provision one team per tenant through the API.
You want email marketing inside your own product. The email editor and UI components are published as MIT-licensed React packages.
You want AI tools to work with your audience. SendLit has a REST API and an MCP server at api.sendlit.app/mcp that Claude, ChatGPT, Cursor and other MCP clients can connect to.

SendLit vs Listmonk at a glance

Feature	Listmonk	SendLit
License	AGPL-3.0	AGPL-3.0-or-later for the server and dashboard; MIT for `@sendlit/email-editor`, `@sendlit/email-blocks` and `@sendlit/api-contract`
Stack	Go, single binary, PostgreSQL	TypeScript, PostgreSQL, Redis, BullMQ, Next.js
Self-hosting	Binary or Docker Compose; the site lists third-party one-click hosts it isn't affiliated with	Docker Compose; a hosted version runs at app.sendlit.app
Sending backend	Multi-SMTP email queues, plus HTTP messengers for other channels	Your own provider over SMTP: Amazon SES, Mailgun, SendGrid, Postmark, Resend or any SMTP service, set per team
Automation	Scheduled campaigns of type regular or opt-in; no autoresponders (issue #206 is open)	Scheduled broadcasts and multi-step sequences triggered by subscribe and tag events
Multi-tenant or embedding	Users, roles and list-level permissions in one instance; the maintainer called multi-tenancy out of scope in 2021	Teams as the tenant boundary, a team provisioning API, and embeddable React components
Import and deliverability controls	CSV import, optionally zipped; throughput and sliding-window rate limiting	CSV import with column mapping; per-provider max send rate and daily warm-up limit
Editor	Visual drag-and-drop builder, WYSIWYG, Markdown, raw HTML or plain text	WYSIWYG email editor, also published as an MIT package

Where Listmonk is the stronger choice

Listmonk has been around since 2018 and does its job well.

Small footprint. One binary plus Postgres is about as simple as self-hosted email gets. SendLit's stack has more moving parts: Postgres, Redis, an API and a dashboard, all started together by Docker Compose.
Flexible content and templating. Five ways to write a campaign, and Go templates with more than 100 functions in subjects and bodies.
SQL segmentation. If you think in queries, it's direct and powerful.
Sending controls. The site lists throughput and sliding-window rate limiting.
More than email. Messengers let one campaign go out as SMS or app notifications.
Broad bounce handling. Listmonk can scan a POP3 bounce mailbox and accepts bounce webhooks from Amazon SES, SendGrid, Postmark, Azure Communication Services, Forward Email and Lettermint.

If you need a fast, simple newsletter sender for one organization and don't need drip sequences, Listmonk is an easy recommendation.

Where SendLit is the stronger choice

Sequences. Welcome series and onboarding drips are built in. In Listmonk, the request for this (auto-reply on subscription) is still open, and the maintainer's suggested workaround there is a cron job that calls the transactional API.
Many tenants on one deployment. Teams isolate contacts, templates, sending credentials and API keys, so an agency or a SaaS product can run many audiences on one install. Listmonk's maintainer instead suggested one Listmonk instance and database per tenant.
Embedding. If you're building a product, you can drop SendLit's email editor and components such as the subscriber list and trigger picker into your own React app under the MIT license.
Easier migration. Contacts → Import reads CSV exports from beehiiv, Mailchimp, Substack or Kit and never makes a contact's status less strict, so unsubscribed and bounced people stay that way.
Agent access. The MCP server exposes contacts, broadcasts and sequences to AI clients over OAuth, with rate limits on high-impact tools.
Deliverability basics in the box. One-click unsubscribe (a POST to the unsubscribe URL, per RFC 8058), suppressions for hard bounces, complaints and repeated soft bounces, and bounce and complaint feedback from Resend, Postmark, SendGrid, Mailgun and Amazon SES.

Listmonk SES setup vs SendLit SES setup

Listmonk with SES. Listmonk's docs describe using SES as your SMTP provider. For bounces, you create an SNS topic, subscribe Listmonk's /webhooks/service/ses endpoint to it, and point your SES identity's bounce and complaint notifications at that topic. Listmonk then acts once a configured bounce count is reached.

SendLit with SES. You add SES as the team's sending provider with its SMTP credentials, which SendLit stores encrypted. For feedback, you give the provider an SNS topic ARN and connect it as described in Amazon SES bounces and complaints, so bounced and complaining addresses are suppressed automatically.

Both tools also pace sending: Listmonk with its rate limits, SendLit with a max send rate per provider that defaults to 14 per second for SES (a new account's starting limit) and holds across all workers. A daily warm-up limit, which can rise automatically, helps ramp up a new SES account.

SES requires a verified sending identity either way, so the setup effort is similar. The difference is what happens next: Listmonk applies the bounce actions you configure once a bounce count is reached, and SendLit adds the address to the team's suppression list.

Is either one an open source Mailchimp alternative?

Both get called that, and both fit part of the description. They're open source, you can host them yourself, and you pay your email provider directly. Neither is a feature-for-feature Mailchimp clone.

Listmonk covers the newsletter and list side well. SendLit adds automated sequences, signup forms and multi-team setups. If you need landing pages, lead scoring and website visitor tracking, you're looking at a full marketing automation suite instead. We compare that kind of tool in SendLit vs Mautic.

FAQ

What's a good Listmonk alternative if I need drip sequences?

SendLit is one option. Sequences enroll contacts when they subscribe or when a tag changes, then send ordered emails over time. Listmonk doesn't ship autoresponders today; the feature request is still open.

Listmonk vs SendLit: which is easier to self-host?

Listmonk. It's one binary and a Postgres database, or a short Docker Compose file. SendLit is also a single docker compose up, but it runs more services (Postgres, Redis, API and dashboard), so there's more to monitor and back up.

Can I use Amazon SES with Listmonk and SendLit?

Yes. Both send through SES over SMTP, and both can process SES bounce and complaint notifications through Amazon SNS. See the Listmonk bounce docs and the SendLit SES feedback guide.

Can I run newsletters for several clients from one install?

With SendLit, yes: each client gets its own team with separate contacts, sending provider and API keys. Listmonk has users, roles and per-list permissions, but its maintainer has said full multi-tenancy is out of scope and suggested one instance per tenant.

Are both really open source?

Yes. Listmonk is AGPL-3.0. SendLit's server and dashboard are AGPL-3.0-or-later, and its embeddable editor, blocks and API contract packages are MIT.

Try SendLit

Read the SendLit docs to see how teams, broadcasts and sequences work. To run it yourself, clone the SendLit repository on GitHub and start it with Docker Compose. To skip the setup, sign up at app.sendlit.app and connect your email provider.

Comparing broader marketing suites too? Read SendLit vs Mautic. Running a solo newsletter? Read SendLit vs MailCheap.