Much like autoresponders, triggered emails are emails that are send out after someone completes an action - in other words, they are trigger based. You can set a triggered email up to be stand alone, or one of a series that will be sent out at a set time after a person subscribes to your contact list or completes an action. A triggered campaign can be set to 'trigger,' based on several criteria, including (but not limited to) a date, a recipient opening a campaign, or a recipient clicking on a link within a campaign.
For example, you can set up an autoresponder to be sent immediately (0 hours) after the person signs up to let them know about a promotion you are having for new users. You could then set up one to be sent 72 hours later see how they felt about your offer.
SEE 9 EXAMPLES OF WHAT YOU CAN DO WITH TRIGGERED EMAILS - click here