listmonk vs Mailblast: Self-Hosted Go Binary vs Hosted SES

Run listmonk if you want to own the server and the database; run Mailblast if you want the same Amazon SES per-email price without owning either. Both push email through SES at $0.10 per 1,000 (AWS, 2026), so the choice is operational, not financial: a self-hosted Go binary with a Postgres dependency versus a hosted dashboard that you point at your AWS keys.

What each product is

listmonk is a self-hosted, open-source newsletter and mailing list manager written in Go, with over 21,000 GitHub stars and 2,300 forks as of June 2026 (source). It ships as a single binary plus a PostgreSQL database and is licensed under AGPLv3. Mailblast is a hosted product that sits on top of your own Amazon SES account: you bring AWS credentials, AWS bills you at $0.10 per 1,000 emails, and Mailblast handles lists, campaigns, automation, and bounce processing.

Both reduce your per-email cost to roughly a tenth of what Mailchimp or Brevo charge at the same volume. The trade-off is who runs the box.

Hosting and operations model

The listmonk documentation lists a Linux host, a PostgreSQL 12+ database, the listmonk binary, and a reverse proxy with TLS as the minimum production install (listmonk docs, 2026). Mailblast removes every one of those line items: you sign in, paste AWS keys, and send. The capability overlap between the two products is large; the operational overlap is zero.

For a developer who already runs a fleet of Go services, those 36 hours per year are a rounding error. For a marketer or founder whose only Linux experience is following blog tutorials, it is a part-time job nobody asked for. The right answer depends on who you are.

Features head-to-head

Both products cover the core newsletter workflow (lists, segments, campaigns, analytics) and both run on Amazon SES at the same $0.10 per 1,000 emails, but they diverge on editor sophistication and automation. listmonk leans into developer ergonomics: Go templates, SQL segments, a JSON API. Mailblast leans into marketer ergonomics: the BeeFree drag-and-drop editor, visual automation triggers, and suppression lists handled for you.

Feature	listmonk	Mailblast
Hosting model	Self-hosted (Go binary + Postgres)	Hosted SaaS on your SES account
License / pricing	AGPLv3, free	Free up to 1k contacts, paid from $10/mo
Drag-and-drop editor	Basic block editor	BeeFree (full)
Automation / drip campaigns	Limited (transactional API)	Visual sequences on all paid plans
SES bounce + complaint handling	Manual SNS wiring	Built in
SQL-based segmentation	Yes	No (UI filters only)
Landing pages	No	No
A/B testing	No	No
Multi-brand / agency mode	One install per brand	Sub-accounts, each independently whitelabeled
Platform branding on emails	None	None from $10/mo (free tier has a footer)
Support	Community (GitHub issues)	Email support included

Two honest gaps in this matrix. listmonk does not have a polished visual automation builder - you can do drips by chaining the transactional API with cron, but it is plumbing, not a workflow canvas. Mailblast does not expose raw SQL segmentation - if your idea of fun is SELECT id FROM subscribers WHERE attribs->>'plan' = 'pro', you will miss it.

The real total cost of ownership

Sticker price is the wrong number to compare. listmonk charges $0 in license fees and Mailblast starts at $0 on the free plan and $10/month on the entry paid plan (Mailblast pricing, 2026), but neither figure includes the lines that actually consume budget: your time, the VPS, the Postgres host, and Amazon SES at $0.10 per 1,000 emails (AWS, 2026). For a 15,000-contact list sending one campaign per week (roughly 60,000 emails per month), the real costs land like this.

The software cost is truly zero with listmonk. The opportunity cost rarely is. If you value your engineering hours at $0 because you would have been on YouTube anyway, listmonk wins on cash. If you bill those hours to clients or to your own product roadmap, Mailblast is cheaper before you even open the app.

For a deeper SES-specific breakdown, see Amazon SES vs listmonk.

When listmonk is the right call

Pick listmonk if you check three boxes: you manage Linux servers comfortably, you want full data sovereignty (the Postgres database stays on your hardware), and your campaigns are newsletter sends rather than multi-step automated journeys. The Go binary is small (a 2 GB VPS handles tens of thousands of subscribers per the project's stated requirements) and the AGPLv3 license is permanent.

It is also the right call if you have a technical preference for SQL-based segmentation, Go template syntax, and webhook-driven workflows. listmonk treats developers as the primary user, and that shows in the product surface.

When Mailblast is the right call

Pick Mailblast if you want SES economics without the SES homework. The free plan covers 1,000 contacts and 10,000 sends per month with no automation sends; paid plans start at $10/month for that same 1,000 contacts, on a 32-rung ladder up to 500,000 (Mailblast pricing, 2026). You get the BeeFree drag-and-drop editor (the commercial builder Mailchimp and SendGrid use), visual automation sequences on every paid plan, automatic bounce and complaint processing through SNS, and no platform branding on outbound mail once you're paid.

If you are weighing other self-hosted options too, the Sendy vs Mailblast comparison covers the other dominant SES-based contender.

Frequently asked questions

Is listmonk really free?

Yes. listmonk is AGPLv3 open source with no paid tier - the project has over 21,000 GitHub stars and 2,300 forks as of mid-2026. Your real costs are the server you run it on (roughly $5-20/month for a small VPS), the PostgreSQL database, and whatever your SMTP or SES provider charges per email. The software itself never sends you a bill.

Can listmonk use Amazon SES like Mailblast does?

Yes. listmonk talks to any SMTP server, so you can point it at Amazon SES SMTP endpoints and pay AWS the standard $0.10 per 1,000 emails. The difference is that listmonk treats SES as a generic SMTP relay, while Mailblast is purpose-built around SES - it handles bounce and complaint webhooks, SNS topics, and verified identities automatically.

Does listmonk have a drag-and-drop editor?

Yes, but it is basic. listmonk ships a WYSIWYG editor plus a simple block-based drag-and-drop builder, raw HTML mode, and Go template syntax for personalisation. Mailblast uses the BeeFree editor, which is the same commercial drag-and-drop builder used by Mailchimp and SendGrid - significantly more polished if your campaigns are design-led rather than developer-led.

Which has better deliverability?

Deliverability comes from the sending infrastructure, not the management tool. If both products send through Amazon SES with the same warmed domain, inbox placement is identical. listmonk gives you raw control over SMTP settings; Mailblast handles SES warm-up, bounce processing, and suppression lists for you. Across more than 1 billion marketing emails sent through Amazon SES via Mailblast, the bottleneck has been sender reputation, never the management layer.

When should I pick Mailblast over listmonk?

Pick Mailblast if you do not want to own a server, a database, or an upgrade cycle. The free plan covers 1,000 contacts and 10,000 sends per month with no automation sends; paid plans start at $10/month for that same 1,000 contacts and add automation, and the BeeFree drag-and-drop editor is included. You bring AWS keys and Mailblast handles the rest. Pick listmonk if running your own Go binary and Postgres database is something you actively enjoy.

Recommendation

If you are a developer who enjoys infrastructure, run listmonk. The software is solid, the license is permanent, and a 2 GB VPS handles the workload. If you would rather not spend Saturday morning on apt upgrade && systemctl restart listmonk, run Mailblast: same SES per-email price, no server ownership, a full BeeFree drag-and-drop editor, and automation included on the free plan.

The wrong move is picking listmonk because it looks cheaper, then quietly burning ten hours a month on upkeep you forgot to budget for. Cash is easy to measure; time is the thing teams overspend without noticing.

Disclosure: this post is published by Mailblast. We have tried to represent listmonk fairly - it is a well-built project we respect - but you should expect us to recommend our own product when the use case fits.