Open source
Alternatives to Thunderbird
12 tools like Thunderbird, chosen by what they do. About Thunderbird
Open source
Open source
HeyForm
Open source form builder with conversational, multi-step forms
Forms and EmailConversational form builder
Open source
Open source
Rallly
Meeting poll tool to find a time that works for everyone
Forms and EmailSchedule group meetings
Open source
Open source
Mailpit
Local SMTP server and web inbox for testing outgoing email
Developer ToolsEmail and SMTP testing tool
Open source
Radicale
Small calendar and contacts server using CalDAV and CardDAV
Home ServerCalendar and contacts server
Open source
Tuta
Encrypted email, calendar and contacts with a free plan
Email and EncryptionEncrypted email and calendar
Curated
Zoho Mail
Business email hosting on custom domains with calendar and contacts
Email HostingAd-free business email
Free trial
HEY
Email and calendar with privacy controls and a calmer inbox
Email and InboxEmail with a calmer inbox
Curated
Gotify
Self-hosted server for sending and receiving push notifications
Home ServerSelf-hosted push notifications











