Through DealMaker, an issuer can update the frequency at which email reminders are sent out to investors to complete their agreement. When you are logged in as an Issuer, you can select the deal you are an issuer in. Then, it should take you to the Investor tab of your deal. Then, you can click on the 'Configure Email Reminders' button to bring out the configuration window.
This should bring up a configuration window where you can update the frequency of email reminders. You can update the frequency to every 'X' number of days or every 'X' number of weeks.