Question 1

What is HelloBox?

Accepted Answer

HelloBox is a web inbox for the email you send with Amazon SES, Resend, Postmark or Mailgun. Connect your provider, then receive, read, reply to and share mail on your own domains as a team, send campaigns, and let AI agents help over MCP. It's free for one person.

Question 2

Which email providers work with HelloBox?

Accepted Answer

Amazon SES, Resend, Postmark and Mailgun. Connect one or several. Your domains and sending stay on your own account, and your provider bills for email volume at its own prices. Using something else? Tell us from this page or the connect screen, and the providers people ask for most come next.

Question 3

How does connecting Amazon SES work?

Accepted Answer

Pick a region and we open AWS with a CloudFormation stack ready to go. You press Create stack, and it makes one role that only HelloBox can use. Through it we verify your domains, set up receiving and track deliveries. We never see your AWS keys, and deleting the stack ends our access straight away.

Question 4

How do Postmark and Mailgun connect?

Accepted Answer

With a key you paste. For Postmark, an Account API token: we use a server you pick, or create one, and point its incoming mail and delivery events at HelloBox. For Mailgun, your API key and HTTP webhook signing key: we find your region, add a route for each domain that receives, and a webhook for delivery events. Keys are stored encrypted, and disconnecting removes what we set up.

Question 5

My SES account is in the sandbox. Can I still use it?

Accepted Answer

Yes, but AWS only lets sandbox accounts send to addresses you've verified. You can ask AWS for production access from Settings, and approval is up to them, usually within a day.

Question 6

Does my email provider have an inbox?

Accepted Answer

No. Amazon SES, Resend, Postmark and Mailgun can all receive email, but SES only stores raw messages in S3 or passes them to Lambda, and the others post them to your app by webhook. None gives people an inbox to read, reply and share. HelloBox adds that inbox on top of your own account.

Question 7

Where do replies to my transactional emails go?

Accepted Answer

To your Reply-To or From address, which usually has no mailbox behind it, so replies bounce. Point Reply-To at an address like support@ and connect your provider to HelloBox, and those replies arrive in a shared inbox.

Question 8

Can I keep sending from my app?

Accepted Answer

Yes. Your API keys, SMTP settings and transactional email keep working exactly as they do today. HelloBox only adds the inbox.

Question 9

Can I send newsletters and announcements?

Accepted Answer

Yes. Campaigns send to your contacts through your own provider: Resend Broadcasts on Resend, and one email per contact at your account's send rate on SES. Campaigns on Postmark and Mailgun are coming. Every campaign has an unsubscribe link, and opt-outs are honored automatically. Plans limit how many contacts you store, not how many emails you send.

Question 10

Does receiving work on any domain?

Accepted Answer

It works on any domain where you can add an MX record. On SES, Postmark and Mailgun we set receiving up for you, and with Cloudflare, or Route 53 on SES, we add the record too. Postmark receives for one domain per connection. On Resend, turn receiving on in your domain settings. We'll tell you if a domain isn't ready.

Question 11

Is my mail end-to-end encrypted?

Accepted Answer

No. Search and spam filtering need to read it. It's encrypted in transit, and access tokens, provider keys and AI keys get their own layer of encryption.

Question 12

Can my AI agent use HelloBox?

Accepted Answer

Yes. HelloBox has an MCP server. Create a connection in Settings, and your agent can use HelloBox on your behalf, the way you do. You choose whether it can only read, also organize, or also send, it never gets more access than you have, and you can revoke it any time.

Question 13

How does the AI assistant work?

Accepted Answer

You add your own provider key. It only reads conversations you choose to share, it only writes drafts, and you always press Send yourself.

The inbox for the email you already send.

Inbox

Re: Partnership next quarter

Pick your provider. We do the rest.

DNS that writes itself.

Everything an inbox should do. Nothing you have to set up.

Share support@ without stepping on toes.

Send it later, or take it back.

Incoming spam, explained.

Search that forgives.

Campaigns from your own provider.

Built for agents. Your AI, your rules.

Free for you. Paid for teams.

Solo

Starter

Team

Business

Questions

Talk to us.

Your domain deserves an inbox.