Aritic Mail - Ariticmail is a transactional email delivery API for applications and enterprises.

Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.

Smartech - Smartech is a AI-powered Cross-channel Marketing Automation & Analytics Suite. It helps marketers and product managers LISTEN to and ANALYSE consumer behavior, and execute hyper-personalised campaigns to retain and engage users (CONVERSE).

LeadMaster - The LeadMaster LeadMasterCRM All-in-One solution includes: marketing automation, lead management, email marketing, website integration & much more.

Doppler Relay - Doppler Relay guarantees the arrival of the Emails and allows to access detailed analytics in real time.

Elucify - A completely free software tool that uses crowdsourced data to find business email addresses