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Stalwart v1.0: The Fastest Mail Server on the Planet

57 points StalwartLabs 4 hours ago 17 comments

Bender 3 hours ago | parent

Have there been independent third party code and network penetration tests performed on Stalwart and what were the findings?

mjrpes 3 hours ago | parent

https://stalw.art/blog/security-audit-2025/ros-report.pdf

Bender 3 hours ago | parent

Nice. Curious if they will also let Mythos and related LLM's also take a pass at it.

Depurator 3 hours ago | parent

I really like running rust infra projects, and have been using stalwart for a long time. Its been excellent for self hosting email on a small hetzner instance. Highly recommended, and happy to see the rare 1.x release in the rust ecosystem. Wrote a bit about my experiences here: https://lindfors.no/blog/self-hosted-newsletter/

drcongo 2 hours ago | parent

Have you had any issues with deliverability? Whenever I consider self-hosting email I think about the number of comments I've seen on HN saying don't.

efields 2 hours ago | parent

Same. I've been a fastmail user for years and JMAP is a must-have for me now. But infra is so much easier to manage than it used to be, and I see projects like this and I'm thinking it could just be my own affordable box in the cloud now (that I could use for other servers as well).

mitxela 2 hours ago | parent

Whenever your email doesn't get delivered, you just resend it from your Gmail account. Receiving always works.

Youden 2 hours ago | parent

I've been self-hosting my email for years. Something that wasn't obvious to me in the beginning is that you can separate sending and receiving: host the receiving yourself and use a service for sending (e.g. Mailchimp, Sendgrid etc.). That can address many concerns.

I did that in the beginning but later set up my own relay hosted at Hetzner. I could do it on my receiving server (a PC in my house) but I don't have a static IP and IP reputation is a big deal in email deliverability.

I do very occasionally get sent to spam but it's fairly rare and I'm not sure my free Gmail account was any better.

BadBadJellyBean 2 hours ago | parent

Even a custom domain can be pain. I have an xyz domain and my mails usually land in the spam folder when I send from it. If you don't have enough volume you might have trouble as well.

nicce 2 hours ago | parent

I just wish there would be more pure JMAP email clients. But maybe soon!

FuriouslyAdrift 25 minutes ago | parent

EM Mail has worked pretty well for me.

sirjaz 2 hours ago | parent

This is an awesome add to my list of server software that runs on Windows Server. I love when devs write for Windows Server.

Milpotel 1 hour ago | parent

Why? Is it some form of Stockholm syndrome?

lunargamma676 2 hours ago | parent

Been running it on a small box and the thing I appreciate most is that it's one process instead of postfix plus dovecot plus rspamd glued together with my own mediocre unit files.

0xc133 2 hours ago | parent

Well, I know what I'm upgrading tonight. (I didn't see any mention of this in the blog post, but they also implemented batch-upload for the vandelay tool, so exporting your archive into a new Stalwart server is much faster now, too!)

eliaspro 1 hour ago | parent

Just yesterday I bought an enterprise license for my personal use because I felt like supporting a project that's doing many things just right!

Stalwart is a really impressive piece of software.

nikisweeting 56 minutes ago | parent

Amazing engineering work! Bought a license just to support it as well.

Can't wait for webmail next!