Mailsendby is an email marketing software that provides features for creating and sending newsletters and email campaigns, managing subscribers, and analyzing email analytics. It offers a drag-and-drop newsletter builder, built-in templates, scheduling, and hyper-personalization. For email campaigns, it provides a powerful drip builder, templates, automation, and drip-specific reports. Subscriber management allows creating lists, managing subscribers with custom fields and tags, importing subscribers, and double opt-in. Email analytics includes campaign reports, customized reports, and visual assistance.