Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Maildroppa - Maildroppa is the GDPR-compliant email-marketing-app for bootstrappers and single-founders. In less than 5 minutes, you can set up beautiful sign-up forms and embed them right on your website without any coding skills.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Search and Replace - Don't worry about those many files where you have to change a few things!
eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.
Predis.ai Hashtag Generator - Predis.ai gives you a Free hashtag generator to boost your Instagram Posts. Generate hashtags by keywords, sentences or images.