Cypht
6.8#70 in email clientsFree planFree planWebSelf-hosted
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| Fact | Cypht | Spike |
|---|---|---|
| App coverage | web | all |
| Calendar tools | Yes | Yes |
| Free plan | Yes | Yes |
| Integrations | The maker lists Tiki, Cloudron, and YunoHost as platforms that embed or package Cypht. | Spike supports Google Drive, Dropbox, and OneDrive for cloud attachments, and its calendar feature names Google Calendar, Outlook, and Apple Calendar. |
| Product | Cypht is an open-source webmail client that combines existing email accounts into a unified inbox. | Spike describes itself as an AI-powered inbox that brings email, calls, notes, tasks, and to-dos into one hub and turns email threads into chat-like conversations. |
| Scheduled sending | Yes | Yes |
| Security | The security page describes TOTP two-factor authentication, TLS/STARTTLS for IMAP, LDAP, and SMTP, and OAuth2 over IMAP/SMTP for Gmail and Outlook. | Spike says message data is encrypted with AES-256 using a per-message private key and that it has periodic external security audits. |
| Support | The maker invites users to contact the team with questions and says the team aims to respond quickly. | The pricing page lists standard support for Starter, priority support for Team and Pro, and VIP support for Business and Ultimate. |
| Unified inbox | It provides combined inbox, unread, sent, and flagged views across email accounts and RSS feeds. | Yes |
You want what its maker publishes above — check its page for the details.
Spike may suit people or teams looking to bring email, scheduled messages, and calendar tools together across desktop and mobile platforms. Its plans cover different email, storage, team, and file-upload needs.