Custom Email Domain

What is a custom email domain?
By default, platform emails (pod comments, Mutual Action Plan notifications, etc.) are sent from trumpet's domain (@sendtrumpet.com). A custom email domain lets these emails come from your own domain instead — for example, notifications@mail.yourcompany.com — so recipients see a familiar sender.
​
​How does it work?
trumpet uses Mailgun as its email-sending provider. When you add a custom domain, you're authorizing Mailgun to send email on behalf of your subdomain by adding DNS records. This is only for outgoing transactional email — it doesn't affect your company's regular email (Gmail, Outlook, etc.) in any way.
​
​What do I need?
You need to be on the Elite plan, and you need to create a subdomain on your existing domain (e.g., mail.yourcompany.com or notify.yourcompany.com). A subdomain is used rather than your root domain to keep transactional email reputation separate from your primary domain. The subdomain should not already be in use for other purposes. You may need your IT team's help to create the subdomain and add DNS records.
​
​What DNS records are required?
When you add your domain in the trumpet platform, you'll be shown three records to add to your DNS provider:
A TXT record for SPF — this authorizes Mailgun's servers to send email from your subdomain. A TXT record for DKIM — this adds a cryptographic key so receiving mail servers can verify emails haven't been tampered with. A CNAME record — used by Mailgun for domain verification and tracking.
Copy these exactly as shown in the trumpet platform and add them at your DNS provider. Emails will continue sending from trumpet's domain until all records are verified.
​
​How long does verification take?
DNS changes typically propagate within a few hours, but can take up to 48 hours. If it still isn't verified after 48 hours, contact trumpet support.
​
​Can this domain receive email?
No. This subdomain is configured for sending only — no MX records are set up for it. Replies to these emails will not be delivered. If you need to handle replies, contact trumpet support to discuss options.
​
​Can I change my domain later?
Yes — delete the existing domain in trumpet and add a new one. Previously sent emails are not affected.