Betterbird
6.9#61 in email clientsFree planFree planLinuxmacOSWindows
VisitBetterbird vs Spike
What both publish
| Fact | Betterbird | Spike |
|---|---|---|
| App coverage | desktop | all |
| Calendar tools | Yes | Yes |
| Free plan | Yes | Yes |
| Integrations | The project says 98% of add-ons that run in Thunderbird will run in Betterbird, and add-ons can be installed from addons.thunderbird.net. | Spike supports Google Drive, Dropbox, and OneDrive for cloud attachments, and its calendar feature names Google Calendar, Outlook, and Apple Calendar. |
| Limits | The project says profiles on network drives are only partly supported and profiles in Dropbox folders do not work. | The Email App Free plan limits search history to 60 days, storage to 1 GB, and uploads to 30 MB per file; the paid plan comparison lists 3 addresses for Pro and unlimited addresses for Ultimate. |
| Platforms | Downloads are available for Windows, Linux, and Mac; current Mac builds are not notarised. | Spike lists iOS, Android, Windows, macOS, and web browser as supported devices. |
| Product | Betterbird is a fine-tuned soft fork of Mozilla Thunderbird that follows Thunderbird Extended Support Releases. | 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 project says no telemetry or crash reports are submitted, while add-on updates and blocklists are downloaded from Mozilla sites. | 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 team helps with bugs but says it cannot provide ordinary account setup, profile management, configuration, or individual troubleshooting support for free. | The pricing page lists standard support for Starter, priority support for Team and Pro, and VIP support for Business and Ultimate. |
| Unified inbox | Yes | Yes |
Betterbird plans
- BetterbirdFree
Spike plans
- StarterFree
- Team$4 a month
- Business$8 a month
- FreeFree
- Pro$6 a month
- Ultimate$12 a month
Pick Betterbird if…
You want what its maker publishes above — check its page for the details.
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.