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Show HN: Zuhal – A Fast and Accurate Email Validation Service

https://zuhal.io
1•shirazshaikh•7mo ago
Hi HN,

I’ve been working on Zuhal, an email validation service designed for developers and marketers who need to ensure their emails reach real inboxes.

Zuhal checks for syntax, domain validity, MX records, disposable addresses, and deliverability risks — all via a simple REST API or bulk upload.

I built this because I faced deliverability issues with email campaigns and wanted a tool that’s fast, accurate, and affordable.

I'd love to hear your thoughts, feedback, or suggestions for improvements. Also curious about how you handle email list hygiene in your projects or companies.

Here’s the site: [https://zuhal.io](https://zuhal.io)

Happy to answer any questions!

Study confirms experience beats youthful enthusiasm

https://www.theregister.com/2026/02/07/boomers_vs_zoomers_workplace/
1•Willingham•6m ago•0 comments

The Big Hunger by Walter J Miller, Jr. (1952)

https://lauriepenny.substack.com/p/the-big-hunger
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The Genus Amanita

https://www.mushroomexpert.com/amanita.html
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We have broken SHA-1 in practice

https://shattered.io/
1•mooreds•13m ago•1 comments

Ask HN: Was my first management job bad, or is this what management is like?

1•Buttons840•14m ago•0 comments

Ask HN: How to Reduce Time Spent Crimping?

1•pinkmuffinere•16m ago•0 comments

KV Cache Transform Coding for Compact Storage in LLM Inference

https://arxiv.org/abs/2511.01815
1•walterbell•20m ago•0 comments

A quantitative, multimodal wearable bioelectronic device for stress assessment

https://www.nature.com/articles/s41467-025-67747-9
1•PaulHoule•22m ago•0 comments

Why Big Tech Is Throwing Cash into India in Quest for AI Supremacy

https://www.wsj.com/world/india/why-big-tech-is-throwing-cash-into-india-in-quest-for-ai-supremac...
1•saikatsg•22m ago•0 comments

How to shoot yourself in the foot – 2026 edition

https://github.com/aweussom/HowToShootYourselfInTheFoot
1•aweussom•22m ago•0 comments

Eight More Months of Agents

https://crawshaw.io/blog/eight-more-months-of-agents
3•archb•24m ago•0 comments

From Human Thought to Machine Coordination

https://www.psychologytoday.com/us/blog/the-digital-self/202602/from-human-thought-to-machine-coo...
1•walterbell•25m ago•0 comments

The new X API pricing must be a joke

https://developer.x.com/
1•danver0•26m ago•0 comments

Show HN: RMA Dashboard fast SAST results for monorepos (SARIF and triage)

https://rma-dashboard.bukhari-kibuka7.workers.dev/
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Show HN: Source code graphRAG for Java/Kotlin development based on jQAssistant

https://github.com/2015xli/jqassistant-graph-rag
1•artigent•31m ago•0 comments

Python Only Has One Real Competitor

https://mccue.dev/pages/2-6-26-python-competitor
3•dragandj•33m ago•0 comments

Tmux to Zellij (and Back)

https://www.mauriciopoppe.com/notes/tmux-to-zellij/
1•maurizzzio•33m ago•1 comments

Ask HN: How are you using specialized agents to accelerate your work?

1•otterley•35m ago•0 comments

Passing user_id through 6 services? OTel Baggage fixes this

https://signoz.io/blog/otel-baggage/
1•pranay01•35m ago•0 comments

DavMail Pop/IMAP/SMTP/Caldav/Carddav/LDAP Exchange Gateway

https://davmail.sourceforge.net/
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Visual data modelling in the browser (open source)

https://github.com/sqlmodel/sqlmodel
1•Sean766•38m ago•0 comments

Show HN: Tharos – CLI to find and autofix security bugs using local LLMs

https://github.com/chinonsochikelue/tharos
1•fluantix•39m ago•0 comments

Oddly Simple GUI Programs

https://simonsafar.com/2024/win32_lights/
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The New Playbook for Leaders [pdf]

https://www.ibli.com/IBLI%20OnePagers%20The%20Plays%20Summarized.pdf
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Interactive Unboxing of J Dilla's Donuts

https://donuts20.vercel.app
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OneCourt helps blind and low-vision fans to track Super Bowl live

https://www.dezeen.com/2026/02/06/onecourt-tactile-device-super-bowl-blind-low-vision-fans/
1•gaws•42m ago•0 comments

Rudolf Vrba

https://en.wikipedia.org/wiki/Rudolf_Vrba
1•mooreds•43m ago•0 comments

Autism Incidence in Girls and Boys May Be Nearly Equal, Study Suggests

https://www.medpagetoday.com/neurology/autism/119747
1•paulpauper•44m ago•0 comments

Wellness Hotels Discovery Application

https://aurio.place/
1•cherrylinedev•45m ago•1 comments

NASA delays moon rocket launch by a month after fuel leaks during test

https://www.theguardian.com/science/2026/feb/03/nasa-delays-moon-rocket-launch-month-fuel-leaks-a...
2•mooreds•45m ago•0 comments