Thunderbird is a free and open-source email client that offers easy setup and customization options.
Best Spike Alternatives ranked by AI · updated Aug 2026
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Spike is an email client that presents conversations in a chat-like format and adds shared notes, tasks, and collaboration tools. Its AI features help users summarize and manage email-heavy workspaces.
Top 6 Spike alternatives
Mailbird is a feature-rich email client for Windows that offers a modern and clean interface.
Starting from $3.25/month
Unroll.me is a service that helps you clean up your inbox by easily unsubscribing from unwanted emails and organizing the rest into...
Clean Email is an email management tool that helps users to declutter their inbox by organizing, archiving, and removing unwanted emails.
Starting from $7.99/month
Canary Mail is a secure email client for Mac and iOS with PGP encryption support.
Free trial available, $19.99 one-time purchase
Gmail Unsubscriber is a tool that helps Gmail users easily unsubscribe from unwanted email subscriptions.
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