Best AI Email Assistant for Outlook (2026)

2026-08-25 · Alexandre Sauvageau

Best AI email assistant for Outlook 2026 — Copilot ($30/mo) vs SaneBox vs Fyxer vs Agentys (under $20/month). proactive overnight overnight drafting at half the cost.

Copilot costs $30/mo and only assists. SaneBox filters but doesn't write. Fyxer summarizes but doesn't draft. Agentys writes your replies overnight for $19/mo. Here's how they compare on Outlook.

Microsoft Copilot for Outlook: Powerful but Expensive

Third-Party Options: SaneBox and Fyxer on Outlook

Agentys on Outlook: hands-free Drafting at Half the Cost of Copilot

Outlook users deserve AI that goes beyond prompts and suggestions. Copilot is powerful but expensive and still assistive. SaneBox organizes but doesn't compose. Fyxer summarizes but doesn't draft. Agentys handles it all — self-running off-hours drafting that matches your tone, priority sorting, and cross-platform coverage — at under $20/month. Start your free trial and experience mornings where your Outlook inbox is already done. One honest limitation: Agentys doesn't integrate with Microsoft Teams or Calendar the way Copilot does. If cross-app M365 intelligence matters to you, Copilot still has an edge there.