caldav-syncCalendar and task management via CalDAV protocol. Query, create, edit, and delete calendar events and todos. Free/busy query, multi-account support.
imap-smtp-emailRead and send email via IMAP/SMTP. Check for new/unread messages, fetch content, search mailboxes, mark as read/unread, and send emails with attachments. Supports multiple accounts. Works with any IMAP/SMTP server including Gmail, Outlook, 163.com, vip.163.com, 126.com, vip.126.com, 188.com, and vip