Creating Email Accounts

Email accounts are mailboxes you create on your hosting account — like info@yourdomain.com or support@yourdomain.com. Each one has its own password, mailbox quota, and inbox. You can create as many as your plan allows.

Before you create an email account#

Make sure:

• You have a domain added to your hosting account (Adding a Domain)
• The domain's DNS is pointed at your Opterius server (Pointing Nameservers)
• The domain's MX records are correct — Opterius creates these automatically when you add the domain, but if you manage DNS elsewhere, see Mail Server Overview for the required records

Step-by-step#

1. Open the Email page#

In Hosting Mode, click Email in the left sidebar.

You'll see a list of all the mailboxes that already exist on your account. If this is your first one, the list will be empty.

2. Click "Create Email Account"#

The button is in the top right of the page. It opens a form with the fields you need to fill in.

3. Fill in the form#

[!TIP] Always use the password generator. Email accounts get brute-forced constantly. A weak password like welcome123 will be cracked within hours of being created. The generator creates 20-character random passwords that are uncrackable but still safe to copy-paste into mail clients.

4. Click "Create"#

Opterius creates the mailbox in 1-2 seconds. You'll see it appear in the list immediately, ready to receive mail.

What you get#

For every email account you create, Opterius gives you:

• IMAP and POP3 access for reading mail in any mail client
• SMTP access for sending mail through Opterius's mail server (with proper SPF/DKIM signing)
• Webmail access at https://your-server-ip:8080 via Roundcube
• Catch-all support if you mark the mailbox as the catch-all for the domain
• Quota tracking that shows current usage in the email list

Connecting your mail client#

After you create an email account, you can connect any mail client (Outlook, Apple Mail, Thunderbird, mobile mail apps) using these settings:

Incoming server (IMAP):
  Server:   mail.yourdomain.com
  Port:     993
  Security: SSL/TLS
  Username: full email address (e.g. info@yourdomain.com)

Outgoing server (SMTP):
  Server:   mail.yourdomain.com
  Port:     587
  Security: STARTTLS
  Username: full email address
  Authentication: required

[!IMPORTANT] Always use the full email address as the username, not just the part before the @. cPanel allowed both styles, but most modern mail servers (including Opterius) require the full address.

Troubleshooting#

"Mail client says it can't connect"#

Check that:

1. The MX record for your domain points to your Opterius server (dig MX yourdomain.com)
2. Port 993 (IMAP) and 587 (SMTP) are open on your firewall
3. The mailbox exists in Opterius and the password matches

"I created the mailbox but I'm not receiving mail"#

Email is more complicated than HTTP. Check, in order:

1. DNS propagation — if you just changed your MX record, it can take up to 24 hours for other mail servers to see the new value
2. SPF/DKIM/DMARC — if these are missing or wrong, many mail providers will silently drop your incoming mail. See Email Deliverability Checklist
3. The other side's spam filter — try sending a test from a Gmail account directly to your new mailbox; if it arrives there, your inbound mail is working
4. Disk quota — if the mailbox is full, new mail bounces

"Sending mail works for some recipients but not others"#

This is almost always a deliverability issue, not a panel issue. The mail leaves your server fine but gets blocked or filtered on the receiving side. See:

• Email Deliverability Checklist
• SPF, DKIM and DMARC

Next steps#

• Forwarders — forward mail from one address to another
• Autoresponders — set up out-of-office replies
• Webmail (Roundcube) — read your mail in the browser
• Email Deliverability Checklist — make sure your mail doesn't go to spam