Dev tools · alternatives · 2026
24 alternatives to ZeroSMTP
Lightweight and secure self-hosted SMTP relay
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
A fast SOCKS5 proxy that tunnels your traffic through what looks like normal SMTP email, bypassing Deep Packet Inspection firewalls. How it works: - Client runs a local SOCKS5 proxy (127.0.0.1:1080) - Traffic is sent to server disguised as SMTP (EHLO, STARTTLS, AUTH) - DPI sees legitimate email session, not a VPN/proxy Features: - One-liner install on any Linux VPS - Multi-user with per-user secrets and IP whitelists - Auto-generated client packages (just double-click to run) - Auto-reconnect on connection loss - Works with any app that supports SOCKS5 Tech: Python/asyncio, TLS…
Jan 2026 · github.com · its alternatives →
- 2
Create unlimited email aliases for free. Protect your real email from spam by using a different address for each service. Privacy friendly, anonymous replies.
2019 · anonaddy.com · its alternatives →
- 3
Zero▲845Hi HN, I’m Nizar, and I’m building Zero (https://0.email) — an AI-powered email client that manages your inbox for you. Email hasn’t changed in decades, even though the way we work has. The average knowledge worker now spends close to 30% of their week on email, constantly reacting, replying, and sorting through noise. It’s become one of the biggest productivity sinks in modern work. At the same time, AI has transformed how we write, plan, and collaborate — yet our inboxes are still stuck in the past. I built Zero to fix that. Zero automatically prioritizes, organizes, and even…
2025 · 0.email · its alternatives →
- 4
Firefox Relay▲252Hide your real email address to help protect your identity.
2021 · relay.firefox.com · its alternatives →
- 5FS
2017 · develmail.com · its alternatives →
- 6
Cleanmails - Unlimited email verification
Jan 2026 · its alternatives →
- 7RT
Every privacy-focused DNS service requires an account: NextDNS, Cloudflare for Families, Apple's iCloud Private Relay (paid, iOS-only). The protocol that doesn’t require one - ODoH - had basically one well-known public relay operator (Frank Denis on Fastly Compute, default in dnscrypt-proxy). I built a second one and the client to talk to it.
May 2026 · numa.rs · its alternatives →
- 8
zero▲94One command to deploy Docker containers to your own server
Apr 2026 · shipzero.sh · its alternatives →
- 9AF
This is a side project of mine. Use this as your SMTP server in a test environment to guarantee that your users don't receive test emails. Looking for feedback, especially on the security side.
2024 · fakemail.stream · its alternatives →
- 10
1SecMail▲112Free disposable email that actually arrives in real time
2025 · tmaily.com · its alternatives →
- 11
Introducing Posthorn, a self hosted email gateway. One docker container (or Go binary) between every self hosted app on your VPS and your transactional email provider. Set up Posthorn once, point your apps to it, done. I was trying to deploy Ghost on a DigitalOcean droplet and found that DO and many different VPS services have started to block the default SMTP ports to try to combat the various types of abuse they get. To actually configure my app, I had to hack together a Postfix relay. In another project, I had a static site which had a contact form, but my free Formspree account was…
May 2026 · github.com · its alternatives →
- 12
I've been frustrated one too many times by terrible airplane wifi and not being able to load Gmail or Superhuman when all I want to do is get a few simple text-only emails out the door. These clients have become pretty bloated with the assumption you've always got great bandwidth. So I vibe coded BAREMAIL. It's open source, has no backend, and you can just set it up for yourself. Takes ~3 mins to setup API access via Google Cloud Platform (thanks for making this not super easy Google!) I tried to maintain nice design and some important keyboard shortcuts without getting to overBEARing.
Apr 2026 · github.com · its alternatives →
- 13
Super Send 2.0▲157Automate cold outreach - email, Linkedin & Twitter
2023 · supersend.io · its alternatives →
- 14
Relay Beta: Own SMTP. Ultra-fast email API.
Nov 2025 · relay.voidvalue.com · its alternatives →
- 15
Minimalist Gmail client for bad wifi connections
Apr 2026 · baremail.app · its alternatives →
- 16
- 17
Get free email forwarding for custom domains. Send & receive as [email protected] with unlimited aliases, 10GB storage, IMAP/POP3/SMTP & 100% open-source security. Trusted by 500K+ users. Setup in 2 minutes.
2023 · forwardemail.net · its alternatives →
- 18
It's a self-hosted mailbox for all emails coming to your own domains, with Web interface and CLI included. Notes: - all emails share the same inbox, as long as set your DNS correctly - Web client via self-hosted Docker or Cloudflare Pages - need additional access controls, may use Basic Auth or Forward Auth with Cloudflare deployment
2024 · github.com · its alternatives →
- 19AR
From the cryptic terminal commands to the innumerable ways to shoot yourself in the foot, I always struggled to use TLS certificates. I love how much easier (and cheaper) Let's Encrypt made it to get certificates, but there are still plenty of things to struggle with. That's why we built Relay: a free, browser-based tool that streamlines the ACME workflow, especially for tricky setups like homelabs. Relay acts as a secure intermediary between your ACME client and public certificate authorities like Let's Encrypt. Some ways Relay provides a better experience: - really fast, streamlined…
2025 · anchor.dev · its alternatives →
- 20
SMTP server & email API embed in an intuitive interface
2020 · tipimail.com · its alternatives →
- 21
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- 23
A desktop client for SSH, SFTP, Docker over SSH
25d ago · github.com · its alternatives →
- 24
Mailway▲56OSS and self hostable catch-all incoming email routing
2021 · github.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →