Mailboxes and SMTP

PING8 includes mailbox management and SMTP provider connections.

Mailboxes

Use Sending > Mailboxes to create and manage mailbox accounts on verified domains.

You can:

• Add one mailbox.
• Batch add mailboxes.
• Import mailbox users.
• Export mailbox users.
• Filter by domain.
• Search by username.
• Toggle mailbox status.
• Copy webmail login information.

Create a mailbox

1. Open Mailboxes.
2. Click Add.
3. Choose the domain.
4. Enter username, password, quota, and user type.
5. Save.
6. Copy login info and test webmail access.

What success looks like

• The mailbox appears under the expected domain.
• Login works through webmail.
• Incoming mail routes to the mailbox when MX points to PING8.
• Sending from the mailbox uses the expected identity and passes domain authentication.

Batch mailbox operations

Use batch add or import when onboarding a team or client. Export before large updates so you have a rollback reference.

SMTP providers

Use Sending > SMTP when you want PING8 to connect to an external sending service.

Provider options include:

• Gmail
• Mailgun
• AWS SES
• SendGrid
• Custom SMTP

SMTP setup workflow

1. Click Add.
2. Choose the provider.
3. Enter provider credentials and host/port settings.
4. Save and test the connection.
5. Open DNS instructions when the provider requires records.

SMTP field checklist

• Host and port match the provider documentation.
• TLS or STARTTLS mode matches the port.
• Username and password are stored securely.
• From address is authorized by the provider.
• DNS authentication records include that provider when it sends on your behalf.

When to use SMTP instead of KumoMTA

Use SMTP when you already trust a third-party provider or need a quick fallback. Use KumoMTA when you want to control the outbound infrastructure path and collect MTA lifecycle telemetry in PING8.

Common mistakes

• Creating a mailbox before MX points to the correct mail host.
• Using a weak mailbox password.
• Treating SMTP provider success as proof that PING8 domain DNS is complete.
• Forgetting to update SPF when a new SMTP provider sends for the domain.