If an email server filters out a message as spam, typically the email is quarantined and does not reach its destination.

One reason that spam filters block email addressed from an Application Service Provider (ASP), such as Certain, is that the "From" address is not using the same domain as the mail server.

For example, if you customize the "From" to be eventplanner@example.com, the email still goes out with Certain's mail server's DNS host name (mail.certain.com) in the header.

To reduce the amount of email quarantined as spam, by default, all email is sent form our servers so that the "From" address is event_information@certain.com and the display name is that of the Registration Contact. The "Reply-To" address will be that of the event's Registration Contact also.

The effect is that email recipients will see the registration contact's name and email address in the "From" field, or the "To" field if they click "Reply". But the receiving mail server will recognize that the email's "From" address is in the same domain as the sending mail server.

Note: Some email client software, most notably Lotus Notes, may display the event_information@certain.com address in the From field.
Despite this, when the recipient clicks Reply, the Registration Contact will show in the To field of the email.

If you need to send emails with a different FROM address, you would need to reach out to Certain Support.  We can then provide you with information on 3 DNS entries you would need to add to the Domain of the email address you wanted to send an Email FROM.  After you or your IT team adds the necessary DNS entries, emails sent FROM that Domain in your event, will pass email security checks (DMARC, SPF, and DKIM), and should not be quarantined or marked as Spam.

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