Mailbird
Thunderbird
eM Client
Microsoft Outlook
Postbox
Apple Mail
Spark Mail
Airmail
Vimcal
Cron
Morgen.so
Cal.com
TidyCal
zcal
Calendly
BeforeSunset
Mailbird
VimcalMailbird is recommended for users who need to manage multiple email accounts, value a customizable and intuitive interface, and wish to integrate their email with other productivity tools. It is particularly suitable for small to medium-sized businesses, freelancers, and individuals looking for a streamlined email management solution.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Cron - Cron Calendar.
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.
Morgen.so - All-in-one Calendar, Tasks & Scheduler. Morgen is the single hub for everything that revolves around time management.
Microsoft Outlook - Organize your world. Outlookโs email and calendar tools help you communicate, stay on top of what matters, and get things done.
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.