
Online PDF Signing and Document Automation | Sign PDF Cloud
Sign PDFs online and automate document workflows in your browser.
@qayyumabro · X
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21 projects

Sign PDFs online and automate document workflows in your browser.
@qayyumabro · X

Email verification API with real-time validation via syntax, domain, MX, and SMTP checks.
@sachinbapure · X

Design and send targeted email campaigns for your brand, agency, nonprofit, or school.
@fwitweets · X

Rewrite your emails to sound appropriate for different cultures and audiences.
u/Constant_Extreme7408 · Reddit
I built a Chrome extension that rewrites emails for different cultures — would love feedback on the website Hey everyone, I've been building MailPolish — an AI tool that polishes emails, letters, and texts so they sound right for different cultures. Not just translation, but actually adapting tone, formality, and etiquette (e.g., a direct "Please send this immediately" becomes softer and more indirect for Japanese business culture). It works as a Chrome extension inside Gmail, a Gmai

Automatically configure email authentication to prevent spoofing and improve inbox delivery.
@okamigenshin · X
Try Authex, for securing your domain and email autonomously.

Email inbox integrated with CRM, Slack, and Claude.
thomas_housecat · HN
I got so frustrated with all of the busywork that was building up in my email inbox that I built something better. Housecat is the first email inbox that helps you get real work done. Our email connects to the other services you actually use like your Claude, Notion, Slack, CRM and Github and makes it easy to send messages and data between them. So if you need to update the CRM with a new lead, track a Github issue or ask a question of a colleague in Slack, you can do it all from right inside of

Verify email addresses in bulk at 99.2% accuracy for $0.35 per 1,000.
@ilyesnamous1 · X
Sealch ( Email verification, priced honestly. Same live SMTP check and catch-all detection as ZeroBounce/NeverBounce, but $0.35 per 1,000 instead of their ~$8. Solo bootstrapped to ~$500 MRR over the last 6 months.

Prove your writing identity with cryptographic verification.
@Harivig94387178 · X
Just go to to In mobile for audio video image In desktop for invoice pdf Canva And create a file download and verify thats all

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

Grade a domain's email protection: check SPF, DKIM, DMARC, and MX records in your browser.
@domainfyrbrand · X

Free AI studio for writing emails and letters without signing up.
maurice_van_de_wouw · Product Hunt
OutreachForce AI Free AI Email & Letter Studio - No Login Required

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.