SMTP Server
We offer a SMTP server for outgoing Transactional Email.
Server: smtp.clicksend.com
Port: 25 (Non-encrypted) or 465 (Secure SSL). If you're having issues, try 587 or 10001 (Non-encrypted).
Username/Password: Username + API key.
Before you start sending, you'll need to verify your 'From' email address here: https://dashboard.clicksend.com/#/transactional-email/settings/from-addresses