Spike

Spike turns email into a conversation view, so threads read more like a chat than a stack of quoted replies.

That conversational layout is the most distinctive thing about the app.

Spike is an AI email assistant and team inbox tool that manages email, combines several accounts under one roof, and adds collaboration features for working with colleagues.

The unified inbox pulls multiple accounts into a single view, which saves you from switching between apps.

AI features help with managing messages, and the tool is also tagged for writing and editing help, summarizing, translation and text-to-speech.

Spike is available across platforms, so you can reach the same inbox from different devices.

There is a free plan.

Some of the more advanced features sit behind a paid subscription, so check what you actually get before relying on them.

Two catches are worth knowing.

People who prefer a traditional email layout may find the chat style takes some getting used to, and leaning on AI for inbox work will not suit everyone.