Shortwave
7.9#16 in email clientsFrom $30 a monthAndroidiOSWebmacOS
VisitShortwave vs Spike
What both publish
| Fact | Shortwave | Spike |
|---|---|---|
| App coverage | all | all |
| Calendar tools | Yes | Yes |
| Free plan | Yes | Yes |
| Integrations | The AI can connect with apps including Slack, Calendar, Notion, Asana, and HubSpot; the pricing page also describes built-in integrations or MCP. | Spike supports Google Drive, Dropbox, and OneDrive for cloud attachments, and its calendar feature names Google Calendar, Outlook, and Apple Calendar. |
| Paid from | 30 | 4 |
| Platforms | The download page offers iOS, Android, macOS, and Windows apps and links to other desktop platforms; Shortwave also offers a web app. | Spike lists iOS, Android, Windows, macOS, and web browser as supported devices. |
| Product | Shortwave is an AI email app that helps users organize, schedule, write, and search email using prompts. | 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 | Shortwave says it has CASA Tier 2 compliance and undergoes an annual third-party security audit. | 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 pricing page describes plan support as direct help from a real person on the Shortwave team. | The pricing page lists standard support for Starter, priority support for Team and Pro, and VIP support for Business and Ultimate. |
| Team collaboration | Teams can share live email threads, comment privately, assign next steps, and use shared labels. | Teamspace includes channels, shared inboxes, groups, collaborative docs and tasks, and audio and video meetings. |
| Unified inbox | No | Yes |
Shortwave plans
- Business$30 a month
- Premier$45 a month
- Max$120 a month
Spike plans
- StarterFree
- Team$4 a month
- Business$8 a month
- FreeFree
- Pro$6 a month
- Ultimate$12 a month
Pick Shortwave if…
Shortwave suits people and teams who want AI tools within a business-focused email app. Teams that share message work may find its thread comments, assignments and shared labels relevant.
Pick Spike if…
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.