What SMTP+ is and when to use it

SMTP+ is a SMTP relay service built right into your MailUp account. SMTP+ makes MailUp a truly complete email delivery solution in that you can now use it not just to create and send email marketing campaigns and triggered messages, but also to send transactional, and personal emails. For example:

The main advantages of using a service like SMTP+ are higher deliverability and tracking. Let's take a closer look...

Higher deliverability

All emails will now go through MailUp, leveraging the system's high deliverability. Take an ecommerce Web site, for example. It typically sends emails through the Web hosting company's SMTP server. That server, however, may be used by companies that do not follow email marketing best practices, and might therefore suffer from a low reputation, with the result that emails end up in the Junk folder. Important messages such as an Order Confirmation message may never be seen by the customer. By switching to SMTP+, that online store will no longer be sending messages through the Web hosting company's SMTP server, but rather through MailUp, enjoying much higher deliverability.


Messages sent through SMTP+ are tracked. You can tell the system how to aggregate messages (e.g. based on the date, the message subject, the sender, etc.) and see 

Other information

Using SMTP+

Please refer to the following pages for details on how to...

Configuring applications and email clients to use SMTP+