Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.

TgGrow - Bot for Giveaways in Telegram.

Mailman 3 - Dedicated Mailman 3 installation. Unlimited lists/configuration. Free subdomain at mailman3.com. Dedicated support for list admins.

Asklayer - Get real answers from your customers with Asklayers surveys, quizzes, polls and more. Works on any website with zero code and includes enterprise level features such auto-segmentation, user tagging, branching, NPS & CSAT calculation.

MailChimp - MailChimp is the best way to design, send, and share email newsletters.

Promolayer - Create fast & high-converting popups, banners, bars, coupon wheels etc. Work less, convert more! Promolayer features hundreds of templates and pre-built strategies to kick start your next campaign. Our app is speed and SEO optimized ⚡️