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AI email assistant alternatives

Top 5 best Jace AI alternatives (honest comparison 2026)

In this blog, we will dive deeper into the capabilities and alternatives to Jace AI, a 24/7 email assistant that organizes your inbox and drafts contextual replies. While Jace AI offers convenience, its limitations prompt users to explore better-suited alternatives for personalized email assistance. We will compare Jace AI with various competitors, highlighting their strengths and weaknesses. By the end, you'll understand why options like Untyped are gaining preference for adaptability and ongoing training.

By
Tom Rijnen
December 1, 2025

What is Jace AI?

Jace AI is a 24/7 email assistant that links to your inbox to draft replies, handle tasks and keep your inbox organized so you wake up to “inbox zen” as they call it. It connects via one click and then produces contextual drafts that incorporate attachments, calendar events and Slack history for quick approval. Smart rules let them automate CCs, templates and actions triggered by incoming emails, while integrations create tickets, send Slack updates and file documents without leaving your inbox.

Why look for Jace AI alternatives?

While Jace AI integrates well with Outlook and has affordable pricing, it takes time to personalize and is not efficiently trained on individual email history. Users often find themselves needing to rewrite many drafts, as the AI lacks flexibility for additional training or connecting external data sources. These limitations prompt the search for alternatives that can better adapt to user needs.

1. Untyped

Untyped is an AI assistant that connects to Gmail or Outlook and generates draft replies for incoming emails. It analyzes your past emails to learn your writing style and creates responses that match your tone. It prepares drafts automatically when new messages arrive, allowing you to review and send them quickly. Untyped also supports inbox organization through labeling, categorization, and workflow features.

Pros

  • 5 minute setup to work directly in Gmail & Outlook with simple pricing at 15 usd per month.
  • Trains itself automatically on your entire email history and keeps learning afterwards.
  • Scores exceptional on drafting replies exactly in your tone of voice.
  • Very flexible to manually add data and with possibilities to connect external datasources.

Cons

  • No possibility to transcribe meetings.
  • Is not compatible with IMAP so it can only be of use when you use either Gmail or Outlook / Microsoft 365.

When to choose Untyped over Jace AI?

Choose Untyped for its fast setup and ability to continuously learn from your entire email history, providing greater accuracy in tone and response drafts. Unlike Jace AI, Untyped allows for real-time adaptability and includes features to connect external data sources. Its pricing model makes it a cost-effective solution for personalized email management.

2. Gemini

Gemini in Gmail is Google’s built-in AI assistant for email creation and management. It supports drafting messages, rewriting text, summarizing long threads, creating structured responses, and generating content based on prompts. It operates within Gmail and leverages Google Workspace data to produce context-relevant output.

Pros

  • Seemless integration with Gmail, making it easy to integrate.
  • Can also be used to summarize received emails.

Cons

  • Is not trained on your history accurately and scores relatively low at drafting replies according to actual previous conversations. Drafts generic replies instead.
  • It's hard to get AI to respond in your own tone of voice.
  • Requires you to use Gmail natively.

When to choose Gemini over Jace AI?

Despite being a built-in feature in Gmail, Gemini drafts responses that are often generic due to its limited training on your email history. If you need a solution that understands your unique voice, Jace AI is more effective but lacks flexibility compared to Gemini's built-in capabilities. Choose Gemini for simpler tasks in Gmail, but expect less personalization.

3. Copilot

Copilot in Outlook is an AI assistant integrated into Microsoft 365. It helps with drafting emails, summarizing threads, generating replies, organizing information from your inbox, and handling routine communication tasks. It works directly inside Outlook and uses data from Microsoft 365 to provide context-aware suggestions.

Pros

  • Seemless integration with Outlook.
  • Brings other features like AI summarizations.

Cons

  • It's a reactive assistant rather than an autonomous agent that decides itself whether or not it will draft a reply.
  • Doesn't directly use your email history when drafting replies, rather using generic models.
  • Requires you to use Outlook natively.

When to choose Copilot over Jace AI?

Opt for Copilot if you're already using Microsoft 365 and want a seamless integration for basic drafting tasks. However, be aware that it relies on generic AI models without tailoring to your email history, often resulting in less relevant replies than Jace AI. Choose Copilot for straightforward summarization needs rather than deep contextual understanding.

4. Superhuman

Superhuman is a productivity suite built around an AI‑native email app that helps teams move through their inboxes faster while staying perfectly coordinated. They triage incoming messages with a split inbox to surface what matters, draft replies that sound like you and can even send on your behalf, and remind you to follow up on time. They let you share and comment on live email threads with teammates, automate repetitive responses with Snippets an use instant replies.

Pros

  • Superhuman has got a calendar integration.
  • With Superhuman, you can connect social media channels for insights.

Cons

  • It's yet another new complicated tool: Superhuman doesn't work in Gmail or Outlook and forces you to learn a new interface that breaks current workflows.
  • There is no flexibility to train the AI tools within Superhuman on additional information.
  • Starts at 40 usd per month if you need basic features like AI drafting, without a free trial.

When to choose Superhuman over Jace AI?

Superhuman offers productivity features that streamline email handling but requires a willingness to adapt to a new interface. If you need additional integrations or insights from social media, it may be beneficial, but be prepared for a steeper learning curve compared to Jace AI. Its pricing could also be a barrier for basic features.

5. Shortwave

Shortwave is an AI‑powered email client designed to automate your inbox and workflow. They use advanced AI to organize and prioritize emails, filter and label messages using plain‑English scripts,. They offer AI search that can analyze your team’s emails and attachments for answers, smart autocomplete suggestions, and scheduling tools that check availability and create calendar events.

Pros

  • Clean, intuïtive custom interface.
  • Affordable pricing.

Cons

  • AI replies lack personalization and don't match your tone of voice.
  • It's yet another new complicated tool: Shortwave doesn't work in Gmail or Outlook and forces you to learn a new interface that breaks current workflows.
  • Works only in combination with Gmail.

When to choose Shortwave over Jace AI?

Select Shortwave if you are looking for an email client that automates organization and prioritization, but be mindful that it also lacks personalization in AI replies like Jace AI. It's designed for seamless functionality with Gmail but relies heavily on a new interface that might disrupt existing workflows. Consider the learning curve and your current tools before making the switch.

Conclusion about making the switch

Making the switch from Jace AI to alternatives like Untyped is advantageous due to their adaptability and ongoing training capabilities. Untyped's ability to incorporate external data sources provides a level of personalization that Jace AI cannot match. For users seeking a more tailored email drafting experience, Untyped stands out as the preferred choice.

Jace AI FAQ:

What is Jace AI?

Jace AI serves as a 24/7 email assistant that directly links to your inbox, capable of drafting responses, managing tasks, and organizing your email effectively. It quickly generates contextual drafts that include attachments and events, automating many routine email tasks. However, it takes time for it to learn your writing style and may result in generic responses initially.

How much does Jace AI cost?

Jace AI has a Plus plan at $20 per month per user, which includes one inbox and calendar, AI‑generated email drafts, sorting features and an AI chat assistant, with a 7‑day free trial. The Pro plan costs $40 per month per user and adds support for multiple accounts, higher usage limits, priority support and custom integrations. Enterprise pricing is negotiated individually and covers advanced features such as team‑wide rules, usage‑based billing and a dedicated account manager.

How to improve the AI answers in Jace AI?

Improving the answers produced by Jace AI can be difficult due to its rigid training model that doesn’t adapt well to external influences. With the inability to connect additional data, users may find the AI’s responses lacking in relevance and personalization. Transitioning to a more flexible alternative like Untyped might yield better results for tailored responses.

What is the best Jace AI alternative?

Based on the comparative analysis, Untyped emerges as the best alternative due to its robust training on user email history and ability to connect external data for enhanced response accuracy. It provides an intuitive setup and ongoing learning, which Jace AI lacks. This flexibility makes Untyped a superior choice for personalized email assistance.

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