Last Updated: April 2025
Inboxes are chaotic. Every day, we’re bombarded with emails, some urgent, some trivial, and plenty that just clog up our mental space. In 2025, email assistant AI tools are stepping up to tame the chaos, helping us save time and stay focused.
Did you know that the average professional spends 28% of their workday on email, according to a 2023 McKinsey study? That’s hours lost to drafting replies, sorting messages, or digging through threads for critical info. With email assistant AI, you can reclaim that time, letting smart tools handle the grunt work while you focus on what matters.
We have spent hours exploring the latest tools, testing their features, and weighing their pros and cons. Below is a roundup of the 7 best AI email assistants for 2025, each excelling in unique ways, whether it’s automating workflows, organizing your inbox, or crafting flawless replies. Let’s dive in and find the perfect email assistant AI for you.
Comparison Table of AI Email Assistants
Tool | Pricing | Best For | Key Features |
Saufter | From $8/month | Automating Customer Engagement | Behavioral campaign suggestions, automation workflows, engagement analytics |
Shortwave | From $8.50/user/month | Smarter Email Search | AI email search, summarization, natural language scheduling |
Microsoft Copilot Pro | Microsoft 365 + $20/month | Polished Communication | Tone analysis, reply suggestions, thread summarization |
Gemini for Gmail | $20/user/month (Workspace) or $19.99/month (Google One) | Google Ecosystem Fans | Contextual summaries, web-enhanced replies, draft generation |
Superhuman | $30/user/month | Speed and Efficiency | Instant AI replies, templates, keyboard shortcuts, thread organization |
Proton Scribe | Included in Proton Duo ($19.99/month) | Privacy-Conscious Users | Encrypted AI drafting, local model option, style/grammar tools |
SaneBox | From $24/year | Inbox Decluttering | Email prioritization, SaneLater folder, Blackhole for unsubscribing |
1. Saufter – Best for Automating Customer Engagement
Pricing:
Starts at $8/month
Imagine an email assistant AI that doesn’t just manage your inbox but also supercharges your customer relationships. That’s Saufter. This tool learns how users interact with your website or app, tracks their behavior, and suggests personalized email campaigns that feel human. It’s a game-changer for businesses wanting to automate outreach without losing that personal touch.
It offers weekly campaign suggestions with automation workflows, so you don’t have to start from scratch. Plus, it integrates with in-app messaging and WhatsApp, making it a one-stop shop for customer engagement.
Key Features:
- AI-driven campaign suggestions based on user behavior
- Automated workflows for emails, WhatsApp, and in-app messages
- Customer journey tracking with engagement insights
- SEO and content recommendations for broader marketing
2. Shortwave – Best for Smarter Email Search
Pricing:
Starts at $8.50/user/month
Searching for that one email buried in your Gmail inbox can feel like hunting for a needle in a haystack. Shortwave’s email assistant AI makes it effortless. With a chat-style interface, it lets you ask questions in plain language, like “Find that email from Sarah last month”, and pulls up results instantly.
Key Features:
- Lightning-fast AI email search
- Summarizes emails and extracts action items
- Natural language meeting scheduler
- Seamless Google Calendar sync
3. Microsoft Copilot Pro for Outlook – Best for Polished Communication
Pricing:
Microsoft 365 + $20/month for AI features
If you live in Outlook, Microsoft Copilot Pro is your new best friend. This email assistant AI elevates your communication with tone analysis, reply suggestions, and thread summarization. It’s like having a writing coach who ensures every email sounds professional and clear.
Key Features:
- AI-powered draft and reply generation
- Tone and clarity coaching
- Summarizes complex email threads
- Deep integration with Microsoft 365 apps
4. Gemini for Gmail – Best for Google Ecosystem Fans
Pricing:
$20/user/month (Workspace) or $19.99/month (Google One)
For those deep in the Google ecosystem, Gemini is a no-brainer. This email assistant AI works across Gmail, Docs, and Sheets, offering contextual summaries, draft replies, and even real-time web lookups to enrich your emails. Need to reference a recent article or stat in your reply? Gemini pulls it up instantly.
Key Features:
- Contextual email summaries and replies
- Real-time web data for richer responses
- Full Google Workspace integration
- Customizable response styles
5. Superhuman – Best for Speed and Efficiency
Pricing:
$30/user/month
Superhuman is built for people who treat email like a race. This email assistant AI combines instant AI replies, keyboard shortcuts, and message templates to help you blaze through your inbox. It’s not just fast, it’s intuitive, learning your habits to streamline your workflow.
Key Features:
- Instant AI-generated replies
- Customizable templates and shortcuts
- Advanced email thread organization
- Clean, distraction-free interface
6. Proton Scribe – Best for Privacy-Conscious Users
Pricing:
Included in Proton Duo plan ($19.99/month)
Privacy is non-negotiable for some, and Proton Scribe delivers. This email assistant AI offers encrypted AI drafting within Proton Mail, ensuring your data stays secure. You can even opt for local AI model inference, meaning your emails never touch the cloud.
Key Features:
- End-to-end encrypted AI drafting
- Local AI model for maximum privacy
- Style and grammar enhancements
- Seamless Proton Mail integration
7. SaneBox – Best for Inbox Decluttering
Pricing:
Starts at $24/year
SaneBox is like a digital Marie Kondo for your inbox. This email assistant AI filters out low-priority emails into a SaneLater folder, so you only see what’s urgent. It learns from your behavior, getting smarter over time, and helps you stay focused on high-priority tasks.
Key Features:
- Automatic email prioritization
- SaneLater folder for non-urgent emails
- Blackhole, for instance, unsubscribing
- Adapts to your email habits
Top AI Email Assistant
In the fast-evolving world of AI for email marketing, Saufter has firmly established itself as a leading AI email assistant in 2025. It goes beyond basic automation by using real-time behavioral data to shape hyper-personalized email experiences. While tools like Shortwave and Gemini offer impressive capabilities in inbox productivity and smart replies, Saufter is built specifically to drive conversions through behavior-driven marketing campaigns.
Why Saufter Leads the Pack
What truly sets Saufter apart is its behavioral intelligence engine. It automatically tracks how users interact with your website or app, monitoring events like cart abandonment, product views, or repeated visits to specific pages. Using this data, Saufter suggests high-converting email campaigns, such as follow-up emails with customized discounts, restock notifications, or even product education flows.
All of this is handled via pre-built automation workflows that are easy to customize, saving marketers hours of manual work.
In addition to email, Saufter supports multi-channel messaging through seamless integrations with WhatsApp, SMS, and even in-app messaging, making it a powerful tool for omnichannel engagement. The platform also delivers weekly campaign suggestions based on both industry trends and your specific audience behavior , a unique feature that keeps your outreach fresh without needing constant manual ideation.
Marketers will appreciate the built-in engagement analytics, which provide detailed insights into open rates, click-throughs, and conversion patterns. Plus, Saufter includes SEO-driven campaign tips to help your content rank and perform better , a bonus rarely found in AI email assistants.
What About Shortwave and Gemini?
Shortwave is a great fit for users who want to manage their Gmail inbox with speed and clarity. It’s designed more for productivity than marketing, transforming email threads into chat-style conversations. It summarizes long emails, sets reminders, and integrates with Google Calendar to schedule meetings.
It’s ideal for founders, managers, or anyone who spends more time in communication than campaign building.
Gemini, on the other hand, is tightly integrated with Google Workspace. It provides real-time AI summaries, contextual suggestions, and web-enhanced responses across Gmail, Docs, and more. Gemini excels at keeping communication fast and contextually relevant but lacks the deep marketing automation and behavioral targeting tools that Saufter provides.
Pricing & Value
Starting at just $8/month, Saufter offers excellent value, especially for small and mid-sized businesses that need a smart, scalable email marketing assistant. Its balance of affordability, AI sophistication, and multi-channel reach makes it a go-to option for teams who want more than just inbox cleanup, they want real revenue growth from email marketing.
Meanwhile, both Shortwave and Gemini are great choices for Gmail power users focused on inbox organization and productivity, not marketing.
How to Automate Email Marketing
Automating AI for email marketing is a game-changer, and tools like Saufter, Superhuman, and SaneBox simplify the process. Saufter takes the lead by tracking user behaviors, like purchases or browsing patterns, and suggesting targeted email campaigns. Connect it to your platform, and it proposes emails, such as re-engagement notes for inactive users.
Its drag-and-drop workflow builder lets you schedule emails based on triggers, like welcome messages for new sign-ups. I appreciated its WhatsApp and in-app notification integrations for a unified strategy. Saufter’s engagement analytics help refine campaigns by tracking opens and clicks, ensuring better results over time.
Superhuman focuses on speed, offering instant AI replies and template snippets to automate repetitive emails, ideal for quick responses but less robust for full campaigns. SaneBox automates inbox organization, filtering low-priority emails to keep your focus on critical messages, which indirectly supports AI for email marketing by reducing clutter.
Start with simple triggers. Saufter’s behavioral data makes this intuitive, while Superhuman’s templates and SaneBox’s prioritization add efficiency. Test a few automated flows, monitor performance, and tweak based on analytics. Saufter’s comprehensive approach makes it the strongest for AI for email marketing, but pairing it with Superhuman or SaneBox can supercharge your workflow.
Conclusion
In 2025, email assistant AI tools are transforming how we manage our inboxes, saving us from the daily grind of email overload. With professionals receiving an average of 121 emails per day, these tools are no longer a luxury, they’re a necessity.
Whether you’re automating customer outreach with Saufter, speeding through replies with Superhuman, or securing sensitive emails with Proton Scribe, there’s an email assistant AI tailored to your needs.
Each tool on this list brings something unique to the table, so think about your priorities, privacy, speed, integration, or automation, and pick the one that fits your workflow. Let 2025 be the year you finally take control of your inbox and make email work for you.
