Custom Email Domain
Updated
Overview
Custom Email Domain allows you to send training emails from your organisation’s own domain, maintaining brand identity while using the Boxphish platform.
Instead of coming from a generic address, training emails can appear from something like: courses@training.yourcompany.com
How to Set It Up
Step 1 – Configure in the Platform
- Go to Settings → Custom Email Domain.
- Enter your organisation’s domain (e.g.
yourcompany.com). - Choose your subdomain prefix (e.g.
training). - Set your email sender name (e.g.
courses). - Click Save & Get NS Records.
Example outcome: courses@training.yourcompany.com
Step 2 – IT Team Updates DNS
- We’ll provide the NS (Name Server) records to add.
- Your IT team adds these to your DNS provider.
- This is a one-time, low-risk configuration.
- No changes to your main domain are needed.
Step 3 – Verify Setup
- Return to the platform and click Check Verification.
- Once verified, you’re all set. Your training emails will now send from your custom domain.
What Your IT Team Needs to Know
Requirement | Details |
DNS Access | Must be able to add NS records to your domain |
Record Type | NS (Name Server) |
Propagation Time | Typically 5–30 minutes, up to 48 hours |
Risk Level | Very low – only affects the training subdomain |
Maintenance | None required after setup |
Security Note
We use subdomain delegation, the industry-standard approach for third-party email services.
This ensures:
- We never need access to your main domain credentials.
- Your corporate email system remains fully unaffected.
- You can revoke access at any time by removing the NS records.
- Clear separation of control between your main domain and Boxphish.
Key Benefits
Professional Branding
- Emails appear to come directly from your organisation.
- Builds trust and recognition among employees.
- Keeps a consistent brand experience across all communications.
Security & Reputation Protection
- Your main domain (e.g. yourcompany.com) stays completely isolated and protected.
- A dedicated subdomain is used for training emails.
- Any deliverability issues are contained to the training subdomain only.
- Follows industry best practices used by major organisations.
Zero Maintenance
- One-time setup handled by your IT team.
- Boxphish manages all ongoing DNS configuration.
- No regular updates or changes required.
- Full visibility and control via your platform settings.
Improved Deliverability
- Built-in SPF, DKIM, and DMARC authentication.
- Dedicated sender reputation for training emails.
- Higher inbox placement and reduced spam risk.
Where It Applies
Custom Email Domain applies to all course send methods, including:
- On-demand Sends
- Journey Builder
- Content Packs
This feature does not affect simulations or any other sending method outside of courses.
