NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
RightMessage - Ask the right questions, pitch the perfect offer
Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI
Linkiro - Increase your conversion rate! Add a call-to-action to links you share
ZeroBounce - Removes invalid emails from your list to prevent email bounces from ruining your deliverability.
Rite.ly - Rite.ly is a Call-to-action (CTA) header that can be used in any page.