Kingmailer
Transactional SMTP Service
Kingmailer launched on May 17, 2017 with 6 votes, #1,442 of 3,229 launches that month. The site was still online in September 2026, 9 years on.
What it does
Kingmailer is a simple and fully featured mail server / SMTP service build for sending transactional emails. Think Sendgrid and Mailgun but our focus is solely on delivery of transactional emails. Start sending, receiving or routing emails with a few clicks.
Buy SMTP with Bitcoin, USDT or crypto. From $49/year · No KYC · 7-day free trial · 99% inbox rate.
Fast, private, and reliable SMTP for businesses. Pay with Bitcoin, USDT, or Monero . No KYC required. Up and running in 2 minutes. Full visibility per email: delivery status, sent and received, headers and complete SMTP logs. Built for businesses that need reliable transactional email — without the complexity or data collection of larger providers. Clean, shared IP addresses and optimized sending infrastructure. Your emails reach the inbox, not the spam folder. No KYC required. We don't scan, sell, or analyze your emails. Pay with crypto for complete anonymity. DKIM & SPF included. Connect in minutes via SMTP or our simple HTTP API. Works with WordPress, any CMS, and major programming…from kingsmtp.com
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