Dev tools · alternatives · 2026
24 alternatives to DerxAPI
Say goodbye to email verification headaches: meet our API
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
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 →
- 2
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 →
- 3
Emailkick▲182Simple email designer and API for AWS SES users
2022 · emailkick.com · its alternatives →
- 4
The first free and accurate email verification service
2020 · gmass.co · its alternatives →
- 5OA
Hi HN, I host my own mail infrastructure and don't rely on third-party tools to send my mails. But in a microservice architecture, managing all the SMTP configs quickly becomes tiresome. After a while I'd always have my credentials and settings scattered in application-properties, bash scripts and environment files. So I've build Brieferl, an app where you can add your SMTP servers and send emails through a single API with a simple JSON payload. You also get logs of when/where emails were sent and HTML previews of messages. I am interested in what you guys think about this. You can…
2025 · brieferl.com · its alternatives →
- 6AF
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 →
- 7
Copy any email you received as your own email template
2019 · chromewebstore.google.com · its alternatives →
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- 9
SMTP server & email API embed in an intuitive interface
2020 · tipimail.com · its alternatives →
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Enveloop▲105Build no-code email/sms templates, send with a simple API
2023 · enveloop.com · its alternatives →
- 12
Codemail.io▲88Send emails with perfectly formatted code snippets
2025 · codemail.io · its alternatives →
- 13
Free API to list all email spam words in different languages
2021 · its alternatives →
- 14
Find emails for any website the 2023 way (with AI of course)
2023 · chromewebstore.google.com · its alternatives →
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- 16WM
Hi HN! We're a 5 person team working on simplifying the creation of email apps. Right now, most email services focus on outbound emails (newsletters, transactional, delivery), but that doesn't solve the fact that we all hate receiving them. You can try it at https://mailscript.com Mailscript lets you create programmable email addresses. It works headless, via the CLI, API (we use Swagger to support most languages). You can even run it as a daemon on a server (to run functions when emails arrive). Once you get [email protected], you can create as many aliases as you'd like…
2021 · its alternatives →
- 17
MailMolt▲93Give your AI agent its own verified email address — not access to yours. Send and receive via REST, SMTP, or MCP. Built for LangGraph, CrewAI, Mastra, Claude Code, Cursor. Human-in-the-loop approval, trust scores, GDPR-ready.
Feb 2026 · mailmolt.com · its alternatives →
- 18
Simple email validation API for a $39 lifetime license
2021 · cloudlyn.com · its alternatives →
- 19
Mentally computable verification codes for email aliases implemented as a postfix tcp table; uses asyncio. - m3047/trualias
2019 · github.com · its alternatives →
- 20
Cleanmails - Unlimited email verification
Jan 2026 · its alternatives →
- 21
Hi HN – Kristyna here. I built this free, online email validator and would love to share it with you. What it checks: - Syntax – Confirms correct proper email format. - Domain & DNS – Verifies the domain exists and resolves. - MX records – Verifies the domain can receive mail. - SMTP handshake (optional) – Checks the mail server accepts the recipient (no message is sent). - Disposable domains – Flags temporary inbox providers that can hurt deliverability lists. - Common typos – Catches mistakes and suggests fixes. How it works: Paste an email > click Validate > get a clear result with…
Feb 2026 · sidemail.io · its alternatives →
- 22
Free email verification tool feature from NLSQL
2018 · nlsql.com · its alternatives →
- 23
Hi HN, I built MailCat because my AI agents kept getting stuck at "please verify your email." The key insight: if your AI agent can read documentation, it can set itself up. Just paste this into Claude Code, OpenClaw, or any AI agent: "Read https://mailcat.ai/skill.md and set up a MailCat mailbox for yourself. Save the token securely." That's it. Your agent reads the skill.md, creates a mailbox via API, and handles email verification autonomously from there. What it does: - Instant mailbox creation via API - Verification codes auto-extracted from emails - 1-hour retention…
Feb 2026 · github.com · its alternatives →
- 24
Blaze Verify▲13Send emails to real people. Email Verification Platform.
2019 · emailable.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 →