Email & Mailboxes
Create and manage email mailboxes on your custom domains. Each mailbox gives you a full email address (e.g., hello@yourcompany.com) with IMAP access for any email client.
Email hosting must be enabled on your plan. If you don't see the Email Hosting section in the dashboard, contact your administrator about upgrading.
Getting Started
1. Add a Mail Domain
Navigate to Email Hosting in the dashboard sidebar and click Add Domain.
Enter a domain you control (e.g., yourcompany.com). This must be a domain where you can manage DNS records.
2. Configure DNS Records
After adding the domain, click the DNS button to see the required records:
- MX record — tells other mail servers where to deliver email for your domain
- SPF record — authorizes your server to send email on behalf of your domain
- DKIM record — adds a cryptographic signature to outgoing emails
- DMARC record — tells receiving servers how to handle emails that fail authentication
Add these records at your DNS provider (Cloudflare, Route 53, GoDaddy, etc.).
DNS changes can take up to 48 hours to propagate, but usually complete within minutes. Use the Verify button to check if your records are detected.
3. Create Mailboxes
Once the domain is added, click Mailbox next to your domain to create a new mailbox:
- Email address — the local part before the
@(e.g.,hello,support,info) - Display name — shown as the sender name in email clients
- Password — used to log in via IMAP/SMTP; minimum 8 characters
4. Connect an Email Client
Use these settings in your email client (Thunderbird, Outlook, Apple Mail, etc.):
| Setting | Value |
|---|---|
user@yourdomain.com | |
| Password | The password you set during creation |
| IMAP Server | Your kuploy-cloud hostname |
| IMAP Port | 993 (SSL/TLS) |
| SMTP Server | Your kuploy-cloud hostname |
| SMTP Port | 587 (STARTTLS) |
Managing Mailboxes
Viewing Mailboxes
The Mailboxes section shows all mailboxes across all your domains, with their status (Active/Disabled).
Deleting a Mailbox
Click the delete icon next to a mailbox. This permanently removes the mailbox and all its stored email.
Deleting a mailbox is irreversible. All email stored in the mailbox will be permanently lost.
Removing a Domain
Removing a mail domain also deletes all mailboxes on that domain. You'll be asked to confirm before proceeding.
Usage & Limits
Your plan determines how many mailboxes you can create. You can view your current usage in the Plans & Usage section of the dashboard.
When you approach your mailbox limit:
- At 80% — you'll receive a warning notification
- At 100% — new mailbox creation is blocked until you upgrade or remove existing mailboxes
Email Deliverability
For reliable email delivery, ensure all four DNS records (MX, SPF, DKIM, DMARC) show as verified. Incomplete DNS configuration may cause:
- Emails being marked as spam
- Emails being rejected by receiving servers
- Failed delivery to certain providers (Gmail, Outlook, etc.)
FAQ
Can I use my mailbox to send newsletters or bulk email? No. Mailboxes are for regular business correspondence. For marketing or bulk email, use a dedicated email service provider (Mailgun, SendGrid, etc.).
Can I forward email to another address? Server-side forwarding via Sieve filters is supported. Contact your administrator for setup assistance.
What email protocols are supported? IMAP for receiving (port 993) and SMTP for sending (port 587). POP3 is not currently supported.
Is there a storage limit per mailbox? Storage quotas can be configured per mailbox by your administrator. The default is determined by your plan.