Send email from your app

Your project’s email qube gives you SMTP credentials, so anything that can send mail can send as your domain: WordPress, Laravel, Django, Rails, nodemailer, a contact form, a cron job.

Find your credentials

1. Open your project and click the Email qube.

2. Find the Send email from your app card.

3. Copy the host, port, username, password and suggested From address. The password is hidden until you copy it, and it is the same sending token the qube uses, so rotating it changes both.

The card also carries ready-made snippets for .env, Node.js, Python and curl if you would rather paste a working config than fill in fields one at a time.

Settings

Setting	Value
Host	Shown on the card
Port	587
Encryption	STARTTLS
Username	Shown on the card
Password	Your project’s sending token, on the card
From	Any address at your verified domain

Use the address you want replies to reach. Mail sent from an address at a domain the qube has not verified will be rejected.

Installed an app from a CloudQube template?

Apps installed from a CloudQube template can arrive with their mail settings already filled in from the project’s email qube. Send a test message before you install an SMTP plugin or paste anything in, because two mail configurations in one app tend to get in each other’s way.

What counts against your quota

Every message your app sends counts against the project’s monthly send allowance, the same pool as mail you send from the dashboard. When the allowance runs out, SMTP stops accepting messages until your monthly allowance resets. That’s on the first of the month, or on your plan’s renewal day if the project has a paid email add-on. You’re never billed for going over, so your app gets a rejected send and you don’t get an extra invoice.

If the card shows a warning that SMTP is not enabled on the project, sends will be rejected whatever your quota says. Re-run setup or contact support.

Sending only

These credentials are for sending mail only. They don’t give you a mailbox you can open in a mail client: there is no IMAP or POP, and incoming mail is read in the browser or delivered to your app by webhook. See Send your first email for how receiving works.