From the blog · Page 3
How we build, what we learn, what we ship.
What does queued mean in email? A plain-English guide
What does queued mean in email? A guide to the queued status in Gmail, Outlook, and on mail servers, plus how sending queues work for developers.
Noreply email addresses: what they are and why to stop using them
What a noreply email address is, why companies use noreply@, and the 2026 case against it - deliverability, trust, and the reply-capable alternative.
BCC in email: what it means and when to use it
BCC in email means blind carbon copy. Learn what BCC means, how it differs from CC, when to use it, and how to send BCC in Gmail, Outlook, and code.
Scoped API keys, WebSocket events, batch sending, scheduled sends, and SMTP
A big infrastructure drop: per-inbox scoped keys, a real-time WebSocket event stream, batch and scheduled sending, and an SMTP gateway for everything that speaks classic email.
Why AI agents need their own email infrastructure
Email is the universal API between businesses - and agents are terrible tenants in human inboxes. Why borrowing a Gmail account does not scale, and what agent-native email looks like.