Pepipost is a cloud-based email delivery engine. It helps you deal with the challenge of timely delivery of your transactional and triggered emails to the inbox of your contacts. Whether your preferred mode of sending emails is SMTP relay or HTTP APIs, Pepipost has solutions for both. Learn more, here.
The outgoing SMTP server is smtp.Pepipost.net, and it is using the ports 465. It requires SSL.
You can find detailed instructions for all email clients here.