This article contains details to send to your IT team to whitelist our email servers.
Whitelisting our email servers will ensure that all Trellis emails are delivered reliably, especially if you work at an organization that has strict firewall and security blockers.
As of October 2025, we have switched email services to SendGrid. If you previously whitelisted email servers from Trellis, please update your whitelist with this new information.
Trellis Emails via SendGrid
Dedicated IP:
-
134.128.87.123
Domain Authentication:
-
em2037.trellis.org
- connect.trellis.org
Sender Address:
-
donotreply@trellis.org
Links / Click-Tracking Domain:
-
connect.trellis.org
SPF Record:
v=spf1 include:sendgrid.net ~all
DKIM:
Configured through SendGrid for em2037.trellis.org.
DMARC:
Active on Trellis sending domains.
Please pass this information along to your IT department so they can add these domains and IPs to their allow list.
Need help?
Reach out to our Product Engagement Team via the blue chat icon or at support@trellis.org and we would be happy to assist.