These records tell the internet that you are using your custom domain to send email blasts via NationBuilder. They help ensure your email arrives in recipient inboxes, rather than being marked as spam by ISPs.
In your domain's DNS registry, you'll want to create three new CNAME records:
email.YOURDOMAIN.com (.org, .gov, etc.) CNAME sendgrid.net. (If you've already got an email subdomain set up for another email service, just use email01 or something like that for your alias here.)
smtpapi._domainkey.YOURDOMAIN.com (.org, .gov, etc.) CNAME dkim.sendgrid.net.
smtpapi._domainkey.email.YOURDOMAIN.com (.org, .gov, etc.) CNAME dkim.sendgrid.net.
And one new TXT record:
with Google Apps:
TXT record - "v=spf1 a mx include:_spf.google.com include:sendgrid.net ~all"
without Google Apps:
TXT record - "v=spf1 a mx include:sendgrid.net ~all"
If you are hosting your DNS records and using NationBuilder as your only email provider, add the MX record "mx.emailnb.com". If you are hosting your DNS records and using NationBuilder Mailboxes in conjunction with another email provider, follow these instructions to integrate the feature with your current email system.
Read more about CNAME connection settings.
Important: If you don't take these steps, email from your domain will show up with a "via email.nationbuilder.com" line in your "from" information, and your email may be automatically flagged as spam by major ISPs.