MailDeck

Cold email infrastructure for high-volume senders

Visit Website
March 13, 2026 Hey IndieHackers!

We've been building cold email infrastructure for outbound teams and as more teams switched to MailDeck, the more confident we became that we've built the most reliable product in the industry.

If you're doing outreach and struggling with deliverability, check it out and let us know what you think!

Comment

About

Existing email infrastructure wasn't built for scale. Teams sending high volumes kept hitting spam, burning domains, and losing deals. MailDeck exists to fix that - enterprise-grade cold email infra that actually deliver