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BYOB New inbox in every project
BYOB Email Broker
Transactional email is easy to postpone and painful to get wrong. The BYOB Email Broker gives generated apps a working sender for magic links, verification, and notifications, so you can build the flows before you choose an email vendor.
Runs on the stack you trust
Prompt to product
From one-line brief to finished app.
Compare the one-line brief with what BYOB ships. Real layout, data, and deploy status, editable from the same workspace.
TD
Team Tasks
Shared task tracking
Today4
Done11
Streak6d
Open live app ↗
Drag the handle. Or focus it and use the arrow keys.
Get inspired
Sites like this, live today.
Real sites that do it well. Build something like this with BYOB.
Fresh from the community
See what builders ship, or start from an example.
Live workspace
Code, chat, and preview in one place.
The workspace is built for repeated product work, not disposable demos. Every generated file stays inspectable, every change is visible, and every follow-up can target the exact part of the app you care about.
01 · EDITOR
Generated code, ready to edit.
Every file BYOB writes stays visible and editable. Follow-ups target the exact lines you care about instead of regenerating from scratch.
- Added lines highlighted the moment they land
Code
Act mode TodoPage.svelte
schema.ts
1
<script lang='ts'>2
type Task = { id: string; title: string; done: boolean
}3
let tasks = $state<Task[]>([])4
5
function toggleTask(id: string) {6
task.done = !task.done // just added by BYOB7
}8
</script> main · 0 problems Preview ready
02 · AI COMMAND
Plan, build, and refine in one chat.
Describe the outcome once. BYOB turns it into a build plan, implements it step by step, and keeps every change visible while you iterate.
- Build plan with live progress you can inspect
B BYOB AI
Chat Act
Your prompt
“Build a todo app for beginners”
Build plan
80%- Task list UI + empty state
- Add + toggle actions
- Progress summary…
Add due dates and filter by done…
03 · LIVE PREVIEW
See every change the second it lands.
The preview updates as BYOB works, with deploy status attached, so the path from edit to production stays inspectable.
- Real app state, not a static mockup
Live preview
/TD
Team Tasks
Shared task tracking
Progress 2 of 3 done
- Wireframe landing page
- Task list component
- Responsive polish + QA
Ask BYOB to refine
Deployed · SvelteKit · SSL on
Prompt to app
From first prompt to a workspace you can ship.
Start conversationally, approve the shape, let Tool Mode implement, then refine and deploy from the same workspace.
- 01 Describe the product Start with the outcome, audience, and any constraints. BYOB turns the idea into a practical build plan.
- 02 Shape the UX Review the proposed flows, screens, data needs, and visual direction before code starts moving.
- 03 Generate the app Tool Mode writes SvelteKit code, connects integrations, and keeps each change visible in preview.
- 04 Test and refine Ask for edits, roll back when needed, run checks, and keep the project editable instead of disposable.
- 05 Deploy Ship the finished app, connect domains, and keep iterating from the same workspace.
Agent and backend
Code with your agent, ship with a real backend.
Connect Codex, Claude Code, or Antigravity to your project, then store data and ship to production without leaving the workspace.
- Approve project access from BYOB
- Installs the byob command
- Preview, deploy, git diff, DNS, credits, and code tools
npmnpx -y byob-cli codex installApprove only the projects your agent can touch, then read context, edit files, inspect diffs, test previews, and roll back from your terminal.
- 1
- prompt to start
- 3
- live panes
- 24/7
- edge preview
Loved by builders
Rated 4.9/5 by developers and founders using BYOB to move from idea to shipped product.
Built for shipping
The parts that usually slow you down are already here.
BYOB handles product planning, implementation, preview, testing, database work, and deployment from one focused interface, with coding-agent access and production analytics when you want to keep working from your own terminal.
This part is hands-on. The cards drift until you touch them. Drag to rearrange, or press and hold one to feel it push back.
Agent integrations
Give Codex, Claude Code, or Antigravity scoped access through BYOB CLI or Agent MCP. Your agent reads context, edits code, tests previews, and deploys from your terminal.
Git history and diffs
Every change lands as a commit. Inspect history, compare diffs, and see exactly what changed since the last deploy.
Inbox in every project
Every project ships with an inbox. Collect messages, leads, and feedback from your app without wiring a third party.
Email sending built in
Send magic links, OTP codes, and transactional mail from your own sender address. Resend-backed, no SMTP setup.
Google and magic-link login
Offer Continue with Google plus passwordless email codes. Sessions and callbacks are handled.
Custom domains and SSL
Point your domain at BYOB with guided DNS checks. Certificates are automatic.
Visual editing
Click any element in the live preview and describe the change. Copy, spacing, color, behavior.
AI testing agent
Run full-site or feature checks and get implementation-level feedback you can apply in one step.
Version rollback
Step between saved states or redeploy a known commit when an experiment goes sideways.
One-click deploy
Builds publish to production hosting in one step. Deploys can auto-save the project state first.
Deployment analytics
Worker traffic, errors, CPU timing, subrequests, and custom-domain status from the workspace.
Supabase aware
Connect Supabase and BYOB reads schemas, drafts migrations, and generates types that match your app.
Team collaboration
Invite people in and keep sessions coordinated so work never overwrites work.
- Vision inputs
- Voice coding
- Project templates
- SEO-ready output
- Context tracking
- Model lock
Simple pricing
Start with credits, upgrade when usage is steady.
Pay as you go when you are exploring. Move to Pro or Max when BYOB becomes part of your regular build workflow.
Pay as you go
$0
$1 = 100 credits
Pro
$25
2,000+ credits/mo
Max
$79
8,000+ credits/mo
Live estimator
What will your app cost?
Try the cost calculator. Drag the pages slider, toggle the options, and watch the agency quote vs BYOB update instantly.
Open full cost calculator →Number of pages: 5
Traditional agency estimate
$5,750 upfront
Yearly maintenance
~$1,150 / year
BYOB estimate
~$45 in credits
BYOB builds the same site from one prompt and hosts it on the edge. Planning estimates, not quotes.
See BYOB plansView full pricing
Need white-label and SSO? Talk to us →
The BYOB Email Broker is a managed sender for generated apps. It sends login and transactional email through provider infrastructure selected by BYOB, so apps call /v1/email/send with app-scoped keys instead of provider secrets. Branded custom sender domains require your own email provider credentials.
One connections call, no provider setup
Registering a sending domain, warming a reputation, and storing a provider key is real overhead for a project that just needs a reset email. The broker removes that step. A generated app calls POST /v1/email/send with an app id and token, and the broker delivers through a configured platform provider. That keeps the first version of an app unblocked: magic links, verification codes, and notifications work on day one, and choosing a long-term provider becomes a later decision rather than a launch blocker.
The sender addresses you get
BYOB chooses a configured provider and returns a project sender, such as an email-prefixed address on a BYOB-managed domain. Each project gets its own address pattern, and the app receives only app-scoped credentials rather than the provider's master key. Recipients see a consistent from-address for your project's email, and replies can be routed back into the project inbox for inspection. The exact domain depends on which provider the platform picks for your project.
Captured email while you build
During development the last thing you want is to email real people while testing a sign-up loop. Captured email appears in the workspace's Email Logs panel, so you can open a magic link, copy a one-time code, or confirm a reset flow without leaving the editor or messaging a teammate to check an inbox. This makes login and onboarding flows testable end to end, and it keeps delivery debugging close to where the email was triggered.
What the broker does not manage
Being clear about the edges saves time. The broker is built around fixed transactional and login templates and does not manage custom sender domains. Arbitrary campaign-style subjects and full HTML bodies, like a marketing newsletter or a rich contact reply, are not the intended path and may be rejected. For a fully branded from-address, deliverability control, or free-form message content, plan to connect your own provider instead of stretching the broker beyond its purpose.
Bringing your own provider
When you do need a branded sender or custom content, the generated app can use your own provider credentials directly from server routes. A Better Auth magic-link callback only has to send a URL to an address, so swapping the broker for a project-owned sender is a contained change. This is the recommended route for production brands: keep the broker for quick starts and internal testing, then graduate to a sender domain you control when reputation and policy matter.
Keeping secrets server-side
Email keys are server credentials. Generated apps read the app id and token from private environment variables and call the broker from a server route or action, never from browser code. The frontend only ever triggers a flow, such as requesting a sign-in link. If a token is missing or rotated, the fix is to re-run the integration setup and persist the new app-scoped values, not to paste a provider secret into client code or a public variable.
FAQ
Frequently Asked Questions
Can I send any HTML and subject through the broker?
The broker centers on fixed transactional and login templates rather than arbitrary campaign content. For fully custom subjects and bodies, connect your own provider.
Can I use my own domain as the sender?
The BYOB Email Broker does not manage custom sender domains. Use your own provider or SMTP credentials when you need a branded from-address.
Where do the app-scoped keys live?
In project environment variables, server-side only. Generated apps call the broker with an app id and token, and provider master credentials never reach the app.
How do I test email without spamming people?
During development, sent mail is captured in the workspace Email Logs panel so you can inspect links and codes safely.
Does it work for magic links and password resets?
Yes. Better Auth's magic-link callback posts to the broker, which is the default passwordless path in generated apps.
Build the first version today.
Start with one clear prompt. BYOB will help turn it into a product you can inspect, edit, test, and ship.