Whitelist OnRamp Notifications and Emails

Last updated: March 13, 2026

If OnRamp emails are landing in spam or getting blocked by your organization’s email security, this guide walks your IT admin through allowlisting OnRamp senders in the most common email systems.

Before You Begin

You’ll need an IT admin or someone with email security access (Google Admin Console, Microsoft 365 Defender, or your secure email gateway). Keep these senders handy:

  • *@onramp.us — all senders from the domain
  • notifications@onramp.us — system notifications

If your organization allowlists by IP address, contact support@onramp.us to request OnRamp’s sending IPs.

Step 1: Add OnRamp’s Domain and Sender to Your Allowlist

In whatever email security system you use, add the following to your allowlist or safe senders:

  • *@onramp.us
  • notifications@onramp.us

Step 2: Platform-Specific Instructions

Google Workspace (Gmail)

  1. Sign in to Google Admin Console (admin.google.com).
  2. Go to Apps → Google Workspace → Gmail → Spam, phishing, and malware.
  3. Find Approved senders and click Configure or Edit.
  4. Add *@onramp.us.
  5. Click Save and confirm the settings apply to the correct Organizational Unit.

Optionally, review Email quarantine and release any held OnRamp messages, marking them Not spam.

Microsoft 365 (Outlook)

  1. Open Microsoft 365 Defender (security.microsoft.com).
  2. Go to Email & collaboration → Policies & rules → Threat policies → Anti-spam.
  3. Edit your Anti-spam inbound policy.
  4. Under Allowed senders and domains, add *@onramp.us and notifications@onramp.us.
  5. Save your changes.

If IP allowlisting is required, add OnRamp’s sending IPs in Connection filter policy → IP Allow list. Check Review → Quarantine to release any held OnRamp emails and mark them as not junk.

Other Providers (Exchange, Mimecast, Proofpoint, Barracuda, etc.)

  1. Open your email security admin portal.
  2. Add *@onramp.us and notifications@onramp.us to your Allowed/Safe Senders and Allowed Domains.
  3. If IP-based allowlisting is required, request sending IPs from support@onramp.us.
  4. Review quarantined messages and release any OnRamp emails, marking them safe.

Tips & Troubleshooting

  • Still missing emails? Confirm both the domain (*@onramp.us) and sender (notifications@onramp.us) are allowed at all layers — tenant-wide policies, secure email gateway, and user-level safe sender lists. Also check for transport rules or DMARC quarantine policies that might override your allowlist.
  • Emails quarantined? Release and mark as “Not spam.” Adding the sender to safe senders at the mailbox level provides an extra safeguard.
  • Need IPs or header samples? Contact support@onramp.us — the team can provide sending IPs and recent message headers to help your IT team fine-tune filtering.