Status & known gaps
What's shipping today, what's coming, and what we've consciously deferred.
send0 is in invite-only BETA. We ship with an opinion: email, done fully — both directions, send and receive.
Shipping today
- Transactional email via
POST /v1/emails - Batch sends up to 100 recipients (
POST /v1/emails/batch) - Webhook events with HMAC-SHA256 signatures
- Domains, templates, contacts, API keys, suppressions — full CRUD
- Idempotency keys,
sk_test_sandbox mode, audit log, MFA - TypeScript SDK (
npm i send0) with typed errors and retries
In private beta
- Inbound email. Inbound routes, MIME parsing, the
email.receivedwebhook, and a retrieve API. Rolling out to beta workspaces. - Programmable inboxes. Webmail inbox UI, threading/conversations, full-text search, reply-from-inbox, and auto-forwarding.
- IMAP / POP access. Connect a standard mail client to a send0 inbox.
Coming next
- Python + Go SDKs. Scaffolds exist but aren't published. See the roadmap.
- Campaign builder. Deliberately not shipped yet — focus is on making the send and receive paths bulletproof.
- Dedicated IPs. Blocked on AWS opening port 25 outbound on our EC2 account. All customers currently send via shared infrastructure.
Not planned
- WhatsApp, SMS, or other channels. send0 is email, and only email. We're not building a multi-channel platform.
- Self-hosted deployments. We're a managed service.
- A free tier for marketing blasts. Transactional has a generous free tier; marketing will be usage-priced.
If something you need isn't here, email support@send0.dev — we read every note during BETA.