Unbox.imFeatures
Manage domain inboxes like a modern team
Unbox hosts and manages mailboxes on your domains — DNS, shared queues, team handoffs — with AI triage on top. API-first for send; web-first for your inbox.
Hosting
Domain mail hosting
Your mail server for custom domains — inbound MX, outbound SMTP, and authentication records handled for you so messages land in inbox, not spam.
DNS verification — myproject.com
- MX · 10 inbound.unbox.im
- Verified
- SPF · include:unbox.im
- Verified
- DKIM · unbox._domainkey
- Verified
- DMARC · p=quarantine
- Verified
Send
API-first transactional send
Password resets, receipts, and alerts from your domain over HTTPS — with optional SMTP for legacy stacks. Not for newsletters or marketing bulk. See API docs.
Domains → API
POST /v1/email
Authorization: Bearer ubk_live_…
{ "From": "hello@myproject.com",
"To": "user@example.com",
"Subject": "Welcome",
"TextBody": "Thanks for signing up." }Triage
AI-powered streams
Every message sorted into a priority stream with a one-line summary — know what needs you in seconds, not after scrolling fifty threads.
Morning briefing
Marc (investor) and Acme support are the two time-sensitive threads today. Legal MSA can wait until after the Marc call — want me to block 30 min Thursday?
Compose
Draft and send with context
The AI sidecar knows your thread history and tone — ask for a draft, refine it in chat, and send from your domain in one flow.
Draft reply
Hi Marc — great to connect (thanks Lisa). Thursday 2pm PT works on my end. Happy to cover runway and eng hires; we're actively recruiting two senior backend roles. Talk soon, Peter
Safety
Send callback
Sent too fast? Unbox holds your message for a short window with a live countdown — tap Withdraw to pull it back to draft before it leaves.
Hi Marc — great to connect. Thursday 2pm PT works on my end. Happy to cover runway and eng hires. Talk soon, Peter
Unified view
Optional external mail
Already use Gmail or Outlook? Connect them for a single daily view — hosted domain mail stays separate, with clear badges so you never reply from the wrong address.
One inbox view. Clear send path per message.
Teams
Shared inboxes
support@ and hello@ shouldn't live in one person's Gmail — shared queues with claims, assignments, and internal notes your customers never see.
Internal note
Alex: "We met Marc at the SaaStr dinner — he's real, not a tire-kicker. Prioritize."
Trust
Security and compliance
Encryption, audit trails, and transparent data handling — built for teams who take customer mail seriously.
- TLS for API, web, and optional SMTP
- Encrypted credential storage
- GDPR-ready data export
See it in action
Explore the inbox demo or create a free account today.