Sending Domains

Verify a domain you own (e.g. give.example.org) so your organization can send email from any address at that domain. Verification uses DNS records you add at your domain host and is performed by Postmark — our email provider.

How it works

Your domain needs two DNS records to fully verify:

• DKIM (TXT) — proves outbound mail actually came from you. Mailbox providers use this signature to decide whether your message lands in the inbox or the spam folder.
• Return-Path (CNAME) — points bounce notifications back to Postmark so bouncebacks don't pollute your domain's reputation.

Once both pass, mail campaigns sent from this organization use newsletter@<your-domain> instead of the platform default newsletter@mg.causevox.com.

Adding a domain

1. Click Add Domain and enter the hostname (e.g. give.example.org).
2. Copy the DKIM TXT record and Return-Path CNAME record into your DNS host.
3. Wait for propagation. DNS changes can take minutes to several hours.
4. Click Verify on the domain row. We re-check both records against Postmark.

DMARC

DMARC is a separate DNS TXT record at _dmarc.<your-domain> that tells mailbox providers what to do when DKIM or SPF fails. It's not managed in CauseVox, but we surface its status so you know whether you're meeting modern bulk-sender requirements.

Google and Yahoo require DMARC for senders sending more than 5,000 messages/day to consumer mailboxes. Even at lower volume, having a DMARC record improves deliverability.

A minimal record looks like:

v=DMARC1; p=none; rua=mailto:postmaster@your-domain;

Start with p=none to monitor without affecting delivery, then graduate to p=quarantine or p=reject once you're confident only authorized systems are sending from your domain.

Falling back

If you delete a verified domain or its records regress, in-flight campaigns that were already bound to it will fail with a clear error. New campaigns send from the platform default until verification is restored.