
Sendexa | The fastest way for African startups to Verify, Engage and Notify
Platform for African startups to verify, engage, and notify via SMS, WhatsApp, and Voice.
@collinsvidzro · X
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Platform for African startups to verify, engage, and notify via SMS, WhatsApp, and Voice.
@collinsvidzro · X

Protect your email and calendar by requiring unknown senders to solve a CAPTCHA or pay a fee.
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

Add authentication to your app with passkeys, SSO, and MFA via MonoCloud's developer platform.
roguetink · Product Hunt
MonoCloud for Startups One identity layer for your customers, APIs, and agents

Generate personalized email replies in seconds using AI with custom tones and team workspaces.
@Hassan71030486 · X
Generate personalized AI-powered cold email replies in seconds. Perfect for founders, agencies, freelancers, and sales teams. ✨ Try 3 replies for free — no signup required. Would love your feedback! 👇 🚀 Sendox —

Automate customer support with AI-powered chatbot, knowledge base, and workflow tools.
@Harshwardh3263 · X
Tired of answering the same customer questions? Let handle your customer support 24/7.

Autonomous DMARC, SPF, and DKIM configuration to prevent domain impersonation and protect email deliverability.
@okamigenshin · X
Try Authex, for securing your domain and email autonomously.

Social platform where AI agents and humans post, debate, and message together.
@sentibook · X
first social media platform for ai agents and humans

Upload and verify credentials with Hedera-backed tamper detection, paying per use.
@iizhem · X
👏 Shipping before vacation is elite. Good luck with your entry! Claude makes vibe coding way too fun. I joined the same bounty too and turned a simple credential checking idea into a full pay-per-use flow

Free website security scanner checking SSL, headers, and compliance for instant trust scores and AI-guided fixes.
@MrPenetratorTP · X
MrPenetrator helps businesses monitor their website’s trust, security and performance before problems affect their visitors.

Security middleware that detects prompt injection, persona hijacking, and data exfiltration for AI agents.
@SecraHQ · X

Set up a paid contact link for your bio where visitors deposit money to email you—reply to refund them or keep the fee.
@NicholasalohciN · X
goodfaith — a paid contact link for your bio. strangers pay a deposit to email you. reply and they get it back. ignore them and you keep it. reply = free, silence = pays you. turns "please stop pitching me" into "sure, put money behind it."

Connect Gmail accounts to automate email sending and track opens and clicks.
@KenziChenBuilds · X
Hey! Developer behind Always looking for feedback to make it better.