In a move that marks the effective end of the Skiff email experiment, Notion has announced that it will shut down Notion Mail, its Gmail client built on the infrastructure and talent acquired from the encrypted email startup. The shutdown, scheduled for September 22, 2025, comes barely a year after Notion acquired Skiff in February 2024 and less than two months after launching the mail client in April 2025.

The Skiff Acquisition and Its Aftermath

Skiff, an encrypted email and productivity suite provider, had gained traction with approximately 2 million users, competing with services like Proton Mail. Notion acquired the startup for its talent and technology, aiming to integrate privacy-focused email capabilities into its broader productivity platform. However, the resulting Notion Mail lacked end-to-end encryption, a cornerstone of Skiff's original offering. Instead, it functioned as a Gmail client with AI-enhanced features like smart labeling and automated workflows.

The acquisition brought former Skiff executives and engineers into Notion, where they built Notion Mail. Yet, within months, the product is being retired, raising questions about Notion's long-term vision for email and its relationship with the Skiff team.

Why Notion Is Killing Its Mail Client

In an announcement on X (formerly Twitter), Notion stated that the decision stems from evolving user behavior. The post read: “As Notion agents have gotten more capable, we’ve seen more users hand off email workflows to them. Today, more than half of Notion Mail users manage emails without ever opening their inbox. So, we’re going all in on using agents to run your inbox.”

This revelation highlights a significant shift in how users interact with email. Rather than manually sorting through messages, users increasingly prefer AI agents that can draft replies, categorize correspondence, and even delete unimportant emails automatically. Notion’s internal metrics indicate that a majority of its Mail users already rely on such agents, prompting the company to double down on its AI strategy.

The move is consistent with Notion's broader push into AI-powered productivity tools. The company has been integrating AI agents into its platform, allowing users to automate tasks across notes, documents, and databases. By shutting down the dedicated email client, Notion can concentrate resources on improving these agents and integrating email management more deeply into its core product.

What Users Need to Know

Notion has assured users that their email data will remain safe in Gmail. A support page notes: “When the Notion Mail inbox shuts down, your email history will stay exactly where it is in Gmail.” However, users must actively export drafts and scheduled emails by September 21; otherwise, those items will be lost. Additionally, Notion provides a tool to export snippets and auto-label instructions for use elsewhere.

For those who have set up custom labeling rules, Notion offers a smooth transition: “If you have auto label set up in Notion Mail, you won’t have to rebuild it. Create a Custom Agent in a few clicks, and we’ll bring your existing rules over for you.” This suggests that the labeling logic will be repurposed within Notion's agent framework.

Regulatory and Compliance Implications

Organizations operating under HIPAA compliance have a longer timeline but must still plan. Notion states that HIPAA-covered entities should transition off Notion Mail by June 30, 2026. This deadline indicates that Notion will continue to support the mail client for regulated industries for about nine more months, but eventually all users must move to alternative solutions.

The compliance situation is particularly noteworthy because Skiff originally offered end-to-end encryption, which appealed to privacy-conscious users. Notion Mail, by contrast, did not inherit that encryption, making it less suitable for stringent compliance requirements. The company has not announced any replacement email service with comparable privacy features.

Market Context and Competition

The shutdown of Notion Mail occurs against a backdrop of intense competition in the productivity suite market. Google Workspace remains dominant, with Microsoft 365 and emerging players like Coda and ClickUp vying for users. Notion’s decision to abandon its dedicated email client could be seen as a strategic retreat, but it might also allow the company to focus on its unique strengths: flexible document creation, database management, and AI integration.

Other tech giants are also exploring AI-driven email. Google has introduced Gemini integrations in Gmail, while Microsoft offers Copilot for Outlook. Notion’s approach differs by emphasizing autonomous agents that handle entire workflows, potentially offering a more hands-off experience. The company’s pivot suggests it believes the future of email lies not in better interfaces but in invisible automation.

Historical Significance of Skiff’s Demise

Skiff’s journey from a promising encrypted email provider to a feature within a shut-down client serves as a cautionary tale. The startup raised significant funding and built a loyal following before being acquired by Notion. While the acquisition brought the team and technology under Notion’s roof, the resulting product never fully honored Skiff’s privacy-first identity. The shutdown of Notion Mail effectively erases the last public-facing remnant of Skiff’s email service.

However, Notion may continue to leverage other aspects of Skiff’s technology, such as calendar integration or storage solutions, in future updates. The company has hinted at exploring new productivity features, though it has not made specific announcements.

What Comes Next for Notion Users

Current Notion Mail users are encouraged to move their workflows to native Gmail or to Notion agents. The company promises that any existing email agents will continue to function: “And if you’re already running Notion agents to manage email, they’ll continue running. Your email connection in Notion stays in place.” This continuity suggests that the underlying email integration with Notion’s platform will persist, even though the dedicated inbox interface disappears.

Users who relied on the Notion Mail interface for email reading and composing may need to adapt to a more backend, agent-driven approach. For many, this shift aligns with the trend toward reducing direct inbox interaction, a goal echoed by other email innovators like Superhuman and Spark.

Notion’s move underscores a broader industry trend: email clients are becoming less relevant as AI agents take over the grunt work of communication management. Whether this leads to more efficient workflows or user alienation remains to be seen. For Notion, the bet is that agents, not inboxes, will define the next era of productivity.

Source: Ars Technica News