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Transactional Email Software

Kingmailer

Simple mail server and SMTP service for sending, receiving and routing email without developer expertise

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About Kingmailer

Kingmailer is a mail server and SMTP service for sending, receiving and routing or forwarding email. It is aimed at anyone, not only developers, and positions itself as a simpler alternative to larger email API providers. The service avoids piling on options and says thousands of emails are handled every day.

Main features

  • SMTP sending: Outgoing mail goes through a simple service.
  • Receiving: Receive mail on the same server.
  • Routing and forwarding: Email can be routed or forwarded with a few clicks.
  • Inbox delivery: The provider claims 98% of mail reaches the inbox.

Clients

Anyone who wants a plain SMTP service, including people who are not developers.

Key facts

  • Positioning: Simple and not bloated with options
  • Delivery claim: 98% inbox delivery

Profile written by TrustList from the business's own published information, Oct 2026.

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