Mailster WordPress Plugin Features:
Import and Export for Subscribers
Unlimited Color Variations
Six types of auto responders
Track Countries and Cities
Optional Image embedding
Single or Double-Opt-in support
Sidebar Widgets
Revisions support
Embed Newsletter with Shortcodes
Automatic Inline Styles
SMTP support
Track Opens, Clicks, Un subscriptions and Bounces
Forward via Email
Send your latest post to your subscribers
Use dynamic and custom Tags
Web version for each Newsletter
Background Image support
Quick Preview
Multi language ready
Unlimited Subscription Forms
Schedule your Campaigns
WYSIWYG Editor with code view
DomainKeys Identified Mail Support
Share with Social Media Services
Retina Ready