Click "Generate New Link," and then grab that link. Then you can link it to your Twitter sharing button. Or, if you're segmenting your list by attributes such as "has Twitter" or "topic of recent conversion: social media" (you'll need marketing intelligence software like HubSpot for this), you can even include it in your main email copy, like this:
S • Segment. Market research and data analysis heavily inform this first step. You can also use marketing personas and the like to help. Your primary aim with this step is to identify differing customer needs according to relevant markers (e.g. demographic, behaviour, occupation, interests...). You then divide your market into ‘segments’ according to these needs.
When you're using email as a marketing tool, you're working on a pretty personal basis. This isn't ‘drive-by' stuff -you're directly targeting customers from their inboxes. There's a huge amount of potential which comes with this kind of marketing... but you'll only reap that potential if you REALLY understand both the marketplace you're operating from, and the audience you're talking to.