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What is the list-unsubscribe header? The list-unsubscribe header is an email header added to your messages. It allows subscribers to see an embedded unsubscribe button

What is DMARC?DMARC is an email authentication, policy and reporting protocol. It uses SPF and DKIM to add an additional layer to authentication by helping

What is an agency setup? Agency Account/Agency Setup refers to what we call Master and Subaccounts. We originally created Agency and Client Accounts for the

Email marketers and those in charge of email for their company can always use more time to do everything on their plate. We know you’ve

Sending emails successfully before and during the holiday season takes prep work. Below, find things to think about and have in place to be ready as

JangoMail/JangoSMTP transactional sending via SMTP relay now allows you to specify a Custom Return Path Header. You can now also pass options through SMTP relay via a custom

Using telnet The telnet application is a handy means of testing SMTP relay server connectivity and your user authentication. To get started – 1. Ensure telnet

Here’s an example of sending an attachment via the SendTransactionalEmail API method using PHP.

Java and API The call to our API using Java is just like calling any other URL where you pass in parameters. The example below