Sending emails requires a lot of small technical "details" to be in place to work 100%. The details surround a few things: what address you are sending from, who controls the DNS for that domain and who are you sending the email to.
If you have your own domain (eg email@example.com) you can likely control 100% of the above and ISN can send 100% of your emails without any concern. All you need to do is make sure your SPF settings are correct. Click here to find out more about SPF Settings!
If you desire to send email from an email address like firstname.lastname@example.org or email@example.com where you do not have control of the domain you need to use them (the email service provider) to send the email. The process of sending email is called SMTP. SMTP is the "highway" of sending emails.
With ISN you can now use SMTP to send emails. This allows for two wonderful things! First, all providers will see this email coming from your actual provider (e.g. gmail.com / google); second, all of your "ISN-sent" emails will actually appear in your sent mail. Long gone are the days of copying or blind copying yourself on an email!
To setup SMTP click on Settings -- SMTP Settings. You will need to provide a few things: Your email username, password, SMTP server name (get this from your email provider), port number and if you want SSL or not. All of these items might sound technical, however your provider will know EXACTLY what you are needing and will be able to assist you.
We have also included some screen shots below to walk you through how to set up SMTP within your ISN!
You can verify an SMTP Setting is working by clicking on the Verify button left of it on the SMTP Settings page after you've added it and saved.