Change SMTP Server
Follow these instructions if you previously had an email profile other than REVLY's iOS profile installed on your device. It is possible that your old profile's SMTP settings might stop you from being able to properly send and receive email with your new REVLY account.
Select Settings from your device's home page.
In your settings menu, select Mail, Contacts, Calendars.
Underneath accounts, select your REVLY email address.
Underneath IMAP, select the Account tab.
Make sure the REVLY SMTP server is turned to On, while all other SMTP servers are turned to Off.