To allow Sign-up.to to send emails on your behalf you will have to include it in your SPF record. The include statement used by Sign-up.to is the following:

include:sign-up.to

For more information please click on the button below.

In order to DKIM sign your email campaigns with a custom signature for your domain you will have to contact Sign-up.to and complete a form which will allow an engineer to get in touch with you. 

Please click on the button below to find out more.

Create a free OnDMARC account to test your configuration.