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Mailyond vs MailOnce

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Mailyond compared with MailOnce
DetailMailyond logo MailyondMailOnce logo MailOnce
What it doesOne email inbox for all your domains, plus a send API for your app Temporary email for verification messages and OTP codes in a browser-scoped, auto-expiring inbox
StageStartup Not given
Founded2026 Not given
Based inRO Not given
Pricing modelNot given Free
PricingBasic $10/month (up to 5 domains, 3,000 emails/month, $1.80 per 1,000 extra emails); Agency $40/month (up to 30 domains, 15,000 emails/month, $1.30 per 1,000 extra emails). 7-day free trial on Basic plan. Not given
Key features
  • Multi-domain inbox with color tagging by project
  • Reply as the correct sender address
  • Transactional send API (Resend compatible)
  • One DNS setup per domain (no forwarding rules)
  • MCP server integration with AI agents
  • Team collaboration (up to 10 members on Agency plan)
  • Postmark delivery on authenticated domain
  • Overage pricing for additional volume
  • HTTP API and MCP for programmatic access
  • Instant temporary email creation without signup
  • Auto-expiring inbox after one hour, extendable to three hours
  • Automatic OTP code detection and copying
  • Verification link detection and opening
  • Custom email address selection
  • Secure device linking with QR code approval
  • Real-time message delivery without manual refresh
  • Multiple domain options for custom addresses
  • Safe email change with confirmation step
What makes it different
  • Single inbox and API for all domains instead of multiple services per domain
  • No per-seat pricing, flat rate per domain bundle
  • Authenticated replies solve DMARC issues that forwarding cannot
  • Built by founder solving his own problem
  • AI agent integration without separate tooling
  • No account creation required to use the service
  • Privacy-focused design with clear lifecycle boundaries
  • Security claims tied to implemented controls, not empty promises
  • Designed for practical utility rather than unnecessary features
Community votes00
DR (Domain Rating by Ahrefs)17 +1 (up) since last check2 −1 (down) since last check
Trust Flow (Majestic)224
Citation Flow (Majestic)2322
Referring domains (Majestic)10210

3 details filled in for both companies.

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