Dev tools · alternatives · 2026
24 alternatives to KaiMail
I've always had the need to quickly just setup an email service for all the different projects and communities that I run, so I built KaiMail to do that. I can't stand the fact that getting emails for your domains can be so difficult compared to setting up a static website. If you're running an open-source project or an open-source community, I'm happy to get you an upgrade at no cost.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
- 2
HappyMail▲201Eight years ago, I was job hunting and felt embarrassed by my Gmail address. I tried registering firstname.lastname — taken everywhere. So I thought: "I'm in IT, I'll set up my own domain with my own IMAP/SMTP. How hard could it be?" A lot went wrong. Forgotten renewals. rocky DNS mistakes. I ended migrating toward Google Workspace, but in the end it felt overkill, having a subscription there plus the whole registrar subscription, and the whole GAFAM sticker on it. Moreover, the final price was way too high for me at the time. Six months ago, someone approached me and related to that…
Jan 2026 · happymail.tech · its alternatives →
- 3
Mailwip - fast and reliable email forwarding service for your domains. Incoming mail API for your web service. Support Rails action mailbox. Replacement for SES incoming. Built-in support for DKIM, SRS, SPF, ARC, DMARC, and more. No credit card required.
2021 · hanami.run · its alternatives →
- 4
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 →
- 5
Sidemail 2.0▲306Hi all! I'm Kristyna, maker of Sidemail. I'd love to share with you what we've been building. We built Sidemail because sending emails from a SaaS app was way harder than it should be. Sidemail is made for developers and teams that want one simple place to handle SaaS emails with reliable delivery and no bloat. It has: - Everything for creating, managing and delivering SaaS emails in one platform, - Easy-to-use email API for sending password resets, receipts, etc. - Messenger for writing product updates and newsletters, - Email automations for onboarding and lifecycle flows, - Fast email…
Nov 2025 · sidemail.io · its alternatives →
- 6
inbound ▲227Hey HN! I've been working on Inbound (inbound.new) - an email system that lets you programmatically manage email addresses and route them to AI agents, webhooks, or forward them anywhere. The core idea: instead of manually managing email addresses, you create them on-demand via API and route incoming emails to your AI agents or other automated systems. For AI Agents: Create [email protected] and emails get sent to your AI agent as webhooks. Your agent can reply using our SDK. Perfect for AI customer support or automated responses. For Email Forwarding: Set up [email protected] to…
2025 · inbound.new · its alternatives →
- 7
Hi all! Excited to share cc.dev after months of work and refinement. The idea for this product came from trying to do email marketing for my side project, CubeDesk, a site where Rubik's Cube enthusiasts can time themselves, race with one another, train algorithms — it's a fun niche! With over 40k users, sending even a single campaign was becoming expensive with MailChimp. I knew AWS SES would be much cheaper, but it’s just an API with none of the other necessities you need for a robust email marketing platform. Beyond cost, I was also frustrated with having to make sure my database was…
2023 · cc.dev · its alternatives →
- 8A1
Back in 2010 I had an idea for a service that would allow people to easily create semi-permanent email aliases so that they could give an email address to people and websites without revealing their real email address. These aliases will continue to work indefinitely unless you choose to block them. My brother and I spent a few months building the initial version and launched the website in July 2010. For the first year we had about 50 signups per month, by 2013 this had increased to 1500 and it's currently around 3500 per month. Similarly, our revenue grew consistently but slowly - doubling…
2020 · its alternatives →
- 9
- 10
- 11
- 12
Greenmor Mail▲212One inbox. Outreach, team chat, AI, and video — built in.
2025 · greenmormail.com · its alternatives →
- 13
- 14
- 15
Mailway▲56OSS and self hostable catch-all incoming email routing
2021 · github.com · its alternatives →
- 16
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 →
- 17
Business email on your own domain, live in five minutes
Aug 2026 · supermailos.com · its alternatives →
- 18
Mango Mail▲55Affordable & easy-to-use email host with unlimited addresses
2024 · mymangomail.com · its alternatives →
- 19
- 20
Straightforward email for everyone.
2021 · cloudflare.com · its alternatives →
- 21
TrekMail▲3Email hosting that scales from 1 domain to thousands
Dec 2025 · trekmail.net · its alternatives →
- 22
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 →
- 23
Hi HN, Two months ago, we launched MailFrom.dev, a fake SMTP server for developers who want to test email sending without hitting real inboxes – think of it like a simpler, cheaper alternative to Mailtrap or Mailhog with a focus on ease of use. Since then: - We’ve had 55 developers sign up with 4 paid subscription active and 821 test emails sent - Improved stability, speed, and small features our early users needed - Worked hard to add roles (wich will be released later next week) What's improved: - Better UI to inspect headers, bodies, and attachments - Faster inbox refresh and sync between…
2025 · mailfrom.dev · its alternatives →
- 24
Also compare
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 →