
MailSink: temp email API for tests and AI agents
Create temporary email inboxes via REST API or MCP to catch verification emails and extract codes.
@anhphong_dev · X
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Create temporary email inboxes via REST API or MCP to catch verification emails and extract codes.
@anhphong_dev · X

Scan any URL for security vulnerabilities: JS CVEs, hidden trackers, and misconfigurations.
@oldagencydev · X
Is this still an open offer?😂I'm launching and trying to get it out there. Free no-signup security scans of any URL to catch everything including vibe-coded app issues. Then paid plans for everything up to enterprise! Already using at my other company!

Paste a contract address to detect Ethereum rug pulls and scams instantly.
@mik3fly__ · X
Here is mine: Check for scam before being scammed!

Run cold email campaigns, automate follow-ups, manage replies, and track what converts from Gmail, SMTP, or the sending provider you already use.
@Yanis_Djabali · X
The complete outbound platform, go try it free

Checks apps for production-readiness issues like security, functionality, and reliability.
u/jjd921 · Reddit
Production readiness checker With AI coding and the low barrier to entry now I see a ton of people publishing apps with serious issues. I tried to build something to help with this. It’s a tool that checks apps for production-readiness issues (security, functionality, reliability, accessibility, etc.) and creates a GitHub PR with the fixes. Automatic scans on every push/PR and deterministic auto-fixes are completely free. Do you see something like this being useful?: https://theslopstopper.c

Transactional email service with free tier sending up to 3000 emails monthly.
@Rahulmailermine · X
Start sending transectional Email in lesss than 5 min, Send 3000 emails per month free

Require unknown senders to solve a CAPTCHA or pay to reach your email and calendar.
felixdoerp · HN
Hi HN, The one thing AI reliably does is generate noise. Half the tools I see launch are just machines for producing more noise across more channels. And people are starting to see this in the form of emails in their inboxes as spam filters are struggling. There used to be a useful signal in email: the effort a sender put into customizing a message was a rough proxy for how relevant it actually was. AI killed that. Now it's customized slop with the appearance of effort with none of the cost. It is painful that the open internet / open channels have been abused like this. Captchainbox applies the idea of proof-of-work to email. If a sender is willing to do a bit of work to reach you, the message is more likely to be worth your time and the sender more likely to be real. The work is a traditional captcha. You can also set a pay-to-deliver amount if you want more friction. The proceeds of the delivery payment after transaction costs go to the Internet Archive and the EFF. The tool curr

Scan websites and apps for security issues, block attacks with WAF, and monitor uptime and SSL expiry.
@YounesLamnabhi · X
a mist to have security kit, pentest and monitoring, can be installed in seconds.

Monitor website uptime, SSL certificates, and DNS from a centralized dashboard with alerts to Slack, email, and SMS.
@adambalee · X
Built Sentinel 👋 Instant free URL check on the homepage. Every free account also includes 1 public status page, even for commercial use.

Verify email addresses and check domain health to improve campaign deliverability.
@mailthentic · X

Send transactional and broadcast email from one modern API — 8 SDKs, Markdown sends, tags, tracking, and webhooks. As low as 8¢ per 1,000.
@anyposthq · X
helps users send better transactional emails while also lowering costs! 🤓

Warms domains for Google Workspace bulk email senders with verification and tracking.
@MarkZofMarkZ · X
Marketers who email - - still testing it, but I could use some help to validate.