Askneo.io - Personalize sales at scale and skyrocket returns.
NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
Verimail - Clean up email-address lists of any size or use our powerful API for real-time verification.
TrueMail.io - TrueMail.io is an email checker service.
MailerLite - Affordable Email Marketing Software. Get all features (Segmentation, Automation, A/B testing) for up to 1,000 subscribers & send unlimited emails for free!
MailChimp - MailChimp is the best way to design, send, and share email newsletters.