Skip to content
I’ll be honest, I used to spend almost two hours every morning just catching up on emails.
Long email threads, scattered updates, and inbox clutter. By the time I figured out what needed a response, half the day was already gone.
Then I discovered AI email summarizers, and everything changed.
These tools don’t just shorten text- They catch the context, highlight what’s important, and show you exactly what needs your attention.
Some even go a step further — drafting replies, updating CRMs, or routing tickets automatically.
Over the last few months, I’ve tested dozens of them, from free browser extensions to paid tools.
Some truly saved hours every day, while others just added more clutter.
So in this guide, I’ll share the 10 best AI email summarizer tools in 2025 — the ones that actually make a difference.
Let’s get started.
Table of Contents
- What Is an AI Email Summarizer Tool?
- Why Trust our Reviews?
- Top AI Email Summarizers Comparison Table
- Top 10 AI Email Summarizer Tools (Tried & Tested)
- 2. SaneBox: Best AI Email Summarizer for Inbox Management
- 3. ChatGPT: Best AI Summarizer for Flexible, Custom Summaries
- 4. Notta: Best AI Summarization Tool for Multilingual Transcripts
- 5. Superhuman: Best AI Email Summarizer for Power Users
- 6. Zendesk: Best AI Email Summarizer for Enterprise Support
- 7. Mailbutler: Best AI Email Summarizer for Multi-language Teams
- 8. Recall: Best AI Summarizer for Multi-format Content
- 9. Shortwave: Best AI Email Summarizer for High-Volume Gmail Users
- 10. Jasper: Best AI Summarizing Tool for Marketing Content
What Is an AI Email Summarizer Tool?
An AI email summarizer tool is software that uses artificial intelligence to condense long email threads and conversations into short, clear summaries. It reads the entire thread, understands the context, and rewrites the key points without losing the main message.
What it can summarize:
- Long email threads
- Customer and client conversations
- Support tickets or helpdesk messages
- Sales emails and follow-ups
- Meeting notes shared via email
- Internal team discussions
Why Trust our Reviews?
I’ve spent the last few weeks testing these AI email summarizers across real day-to-day scenarios like managing long threads, tracking project updates, and managing a steady flow of emails. Some tools genuinely streamlined my workflow, while others made things more complicated.
Some tools made my life a lot easier, while others just added clutter. I tested these tools by:
- Summarizing everything from long email chains to meeting follow-ups to see how accurately they captured key points.
- Checking how well each tool handled different writing styles and formats.
Seeing how smoothly they integrated with platforms like Gmail, Outlook, and collaboration tools. - Rating them on speed, clarity, ease of use, and how well they fit into a typical workday.
The ones you’ll see in this list are the ones that actually earned a spot in my tech stack.
They’re practical, reliable, and genuinely help cut through email clutter. Sometimes our reviews include Hiver, sometimes they don’t—but every recommendation comes from hands-on testing and honest experience.
Top AI Email Summarizers Comparison Table
| Tool | Best For | Price | Key Features | Free Trial |
|---|---|---|---|---|
| Hiver | Summarizing and managing customer support emails | Starts from $25/month | AI summaries, workflow automation, shared inbox, analytics | Yes |
| SaneBox | Turning low-priority emails into daily digests | Starts from $7/month | Email digest, filtering, reminders, bulk actions | Yes |
| ChatGPT | Generating custom summaries with flexible prompts | Free | Multi-format summarization, multilingual support, follow-up Q&A | Yes |
| Notta | Summarizing multilingual meeting transcripts | Starts from $8.17/month | 58 languages, live transcription, editable summaries | Yes |
| Superhuman | Quickly scanning and triaging a busy inbox | Starts from $25/month | AI summaries, smart replies, fast inbox, task detection | Yes |
| Zendesk | Summarizing large volumes of customer tickets | Starts from $55/month | AI ticket summaries, automation, analytics, omnichannel support | Yes |
| Mailbutler | Multi-language email summarization | Starts from $7.95/month | AI summaries, multilingual support, privacy-focused add-on | Yes |
| Recall | Summarizing emails, videos, and documents in one place | Starts from $7/month | Summarizes text, video, and audio, builds knowledge graph | Yes |
| Shortwave | Highlighting actions in Gmail conversations | Starts from $24/month | AI thread summaries, smart bundles, action highlighting | Yes |
| Jasper | Summarizing and turning email content into marketing copy | Starts from $39/month | AI summaries, brand voice control, repurposing content | Yes |
Top 10 AI Email Summarizer Tools (Tried & Tested)
1. Hiver: Best AI Summarizer for Customer Support Teams
Hiver is an AI customer service platform that helps teams manage shared inboxes, automate routine tasks, and respond to customers faster. It’s built to simplify support workflows and bring all communication into one place for small and large teams alike.
Key Features:
- AI Summarizer: Instantly shortens long email threads, support tickets, and documents into clear, easy-to-read summaries so you can get the full picture faster.
- Custom Summaries: Pick how much detail you want in a summary, whether it’s a quick overview or a detailed breakdown, tag a team member, or add a note for future reference.
- AI Copilot: An intelligent assistant that helps agents write, refine, and respond more effectively. It includes tools like AI Compose for polishing tone and clarity, Ask AI for fetching contextual answers, and AI Suggested Response for generating ready-to-send replies—all within your inbox.
- Workflow Automation: Automatically tags, assigns, and closes conversations, saving your team time and reducing manual work.
- Privacy First: Keeps your data secure and doesn’t store any content from your emails or files.
- Supports Multiple File Types: Works smoothly with PDFs, Word documents, and text files for quick and easy summarizing.
| Pros | Cons |
|---|---|
| Works right inside your inbox, and helps with team collaboration. | AI features are only available as an add-on. |
| Comes with other AI features that help throughout the workflow. | More suited for support teams rather than personal inbox management. |
What Sets It Apart
What sets Hiver apart is its focus on conversational support and helpdesk email summarization. Unlike standalone summarizers that just condense text, Hiver understands the support context—it knows what’s a customer complaint versus a feature request, and it summarizes accordingly.
For example, when comparing summaries of the same customer support thread:
- Gemini creates a long, narrative-style summary that lists each message but misses the main intent.
- Hiver AI Copilot organizes the same thread into clear sections like Summary, Customer Issues, Actions Taken, Status, and Next Steps, giving teams immediate clarity.
Hiver AI captures intent, highlights outcomes, and identifies what needs action next. It is built to understand real workflows and help teams stay organized, efficient, and focused on what matters most.
User Reviews
“They are always adding new features, and the customer service is top-notch. The new AI features are really useful as well.”
“Support is always helpful. The new summarize function is a useful, time-saving tool.”
Pricing Overview
- Growth: $25/user/month
- Pro: $45/user/month
- Elite: $75/user/month
- All AI features (including AI summarizer) are available as an AI add-on for $20/user/month
2. SaneBox: Best AI Email Summarizer for Inbox Management
SaneBox is an email management tool that helps you stay on top of your inbox without switching apps or providers. I noticed an AI-powered Daily Digest feature, that summarizes less important emails you haven’t opened yet. So you can scan them all at once instead of going through each one.
These messages are automatically sorted into a SaneLater folder, keeping your main inbox clean.
Key Features
- Daily Email Digest: Get one simple summary of all your less important emails at a time you choose. It’s an easy way to clear out clutter in minutes.
- Quick Actions: Archive, snooze, delete, or move emails right from the summary view without opening each one.
- Smart Reminders: See all your scheduled follow-ups and reminders in one place.
- Bulk Management: Handle multiple emails at once. You can even train SaneBox to automatically filter messages from certain senders or domains.
- Works Everywhere: Compatible with Gmail, Outlook, Yahoo, iCloud, and other major email platforms—no extra app or installation needed.
| Pros | Cons |
|---|---|
| Helps you cut through inbox clutter by summarizing and organizing low-priority emails for quick review. | Doesn’t generate detailed AI summaries of individual emails—mainly focuses on filtering and batching. |
| Works across major email platforms and saves time with fast bulk actions and smart reminders. | Some useful features, like domain training and custom digests, are available only on premium plans. |
What Sets It Apart
If you’re getting 200+ emails daily and need to separate the signal from the noise, SaneBox excels at that filtering layer.
It stands out by enhancing any inbox with digest, filtering, and time-saving automation, and summarizing unread emails, without any software installation. It integrates with all email providers, making it perfect for users with multiple email accounts across different platforms.
User Reviews
“The AI is excellent. One instruction and all future emails go to the right box.”
“I get 3-400 emails a day, so I live in fear of missing important emails. SaneBox separates, very cleanly, those emails from newsletters or not directed at me to SaneNews or SaneLater boxes, leaving important emails as primary.”
Pricing
No matter which plan you choose—whether it’s the Snack plan at $2.42 per month, the Lunch plan at $4.08, or the Dinner plan at $11.58—you’ll have access to the AI summarizer. A free trial is available for 14 days.
3. ChatGPT: Best AI Summarizer for Flexible, Custom Summaries
ChatGPT is OpenAI’s conversational AI that helps with writing, summarizing, and problem-solving across work, school, and creative projects. While it’s not built specifically for email, it’s one of the most reliable and flexible tools for summarizing long threads or messages quickly and clearly.
Key Features
- Flexible Summaries: Quickly turn long emails, documents, or conversations into short, clear summaries, action lists, or timelines.
- Conversational Memory: Understands context from previous messages, so you can ask follow-up questions like “What was decided about the budget?”
- Multilingual Support: Summarizes and translates content in multiple languages—ideal for global teams.
- Prompt-Based Editing: Can rewrite, shorten, or expand text naturally, with support for bullet points and outlines.
- Easy Integrations: Connects with popular tools and APIs for research, content creation, and workflow automation.
| Pros | Cons |
|---|---|
| Can summarize and adapt to almost any type of content—from long emails to full documents—with natural, conversational flow. | Not built specifically for emails or meetings, so it may need extra prompts for accurate summaries. |
| Supports multiple languages and advanced customization for different summary styles. | Some outputs can be inconsistent, and it requires manual copy-pasting since there’s no direct email integration. |
What Sets It Apart
It’s ideal for marketers, researchers, students, and anyone needing versatile, flexible summary options or deeper conversational synthesis. If you’re comfortable spending 30 seconds crafting a good prompt, ChatGPT gives you more control than any other tool on this list.
User Reviews
“The amount of time saved in doing common day-to-day tasks is incredible – whether it is to summarize PDFs, online articles,…all of these are made easy.”
“The biggest downside is its potential for inaccuracy. While powerful, it can sometimes “hallucinate” or present false information with complete confidence.”
Pricing Overview
- Free: Basic model, core summarization capabilities
- Plus: $20/month
- Team/Enterprise: Custom pricing for organizations
4. Notta: Best AI Summarization Tool for Multilingual Transcripts
Notta is an AI-powered transcription and summarization tool that turns spoken content into clear, structured notes. It’s great for summarizing YouTube videos, meetings, and web content—but it really shines at handling multilingual transcripts and creating editable, shareable summaries.
Key Features
- Multilingual Transcription: Accurately transcribes meetings or emails in over 50 languages, even when speakers switch between them.
- Live Transcription: Converts speech to text in real time during Zoom, Google Meet, or Teams calls.
- AI Summaries and Action Items: Automatically highlights key points, speakers, and next steps after each meeting.
- Editable and Collaborative Transcripts: Edit transcripts, add notes, and collaborate with teammates for clearer follow-ups.
- Smart Search: Quickly find specific moments or topics using filters for speakers, dates, and keywords.
| Pros | Cons |
|---|---|
| Accurate transcriptions and an easy-to-use interface make it great for live or recorded meetings. | Accuracy can drop with background noise or heavy accents. |
| Supports 58 languages and integrates smoothly with Zoom, Google Meet, and Teams. | Advanced export and collaboration tools are only available on paid plans. |
What Sets It Apart
Notta is suited for global teams, consultants, educators, and professionals who handle multilingual communications. If you’re working with international clients or have a distributed team across different countries, Notta’s language support is unmatched.
User Reviews
“The summarize feature is very useful, mainly when you had a very long meeting and you don’t have too much time to read the entire transcription”
“”The only limitation I’ve noticed is that some accents or background noise can slightly reduce transcription accuracy.”
Pricing Overview
- Free: 50 file uploads/month, 10 AI summaries/month
- Pro: $8.17/month
- Business: $16.67/month
5. Superhuman: Best AI Email Summarizer for Power Users
Superhuman is a fast, minimalist email client built to help users manage large inboxes with less effort. Its AI features now include automatic email summaries, smart triage, and productivity shortcuts, making it a favorite among busy professionals, founders, and executives who value speed and focus.
Key Features
- AI Summaries: Shows quick, one-line summaries for every thread so you can instantly catch up without rereading long email chains.
- Ask AI: Lets you search your inbox in plain language, like “show emails about Q2 OKRs,” and instantly finds what you need.
- Smart Replies: Suggests short, relevant responses based on the email context and your writing style.
- Event Detection: Spots meeting details in emails and helps you schedule or add them to your calendar in one click.
- Focus and Collaboration: Offers team snippets, keyboard shortcuts, and a clean interface that helps you work faster and stay organized.
| Pros | Cons |
|---|---|
| Cuts inbox time drastically with accurate summaries and smart reply suggestions. | Premium pricing makes it expensive for individual users and small teams. |
| Clean, fast interface designed for focus and productivity. | Lacks advanced AI customization and deeper summary controls found in dedicated summarization tools. |
What Sets It Apart
Superhuman is built for busy professionals, founders, and executives who deal with a constant flood of emails every day. If you manage hundreds of conversations and value speed above all else, Superhuman’s clean, fast interface and instant summaries make it a must-have.
User Reviews
“I couldn’t rave enough about the AI-supported Summarize feature, converting long threads into a few bullet points for my quick understanding of what’s going on.”
“Superhuman doesn’t offer a free trial, which would have been helpful. The monthly fee is a bit steep for my (very) small business.”
Pricing Overview
- Starter: $25/user/month
- Business: $33/user/month
- No free tier
6. Zendesk: Best AI Email Summarizer for Enterprise Support
Zendesk is a popular customer support platform that includes powerful AI summarization capabiltities. It automatically condenses tickets, chats, and voice interactions into clear summaries, helping agents grasp context faster and respond more effectively.
Key Features
- AI Summaries and Replies: Automatically summarizes tickets, chats, and calls while suggesting context-aware reply drafts to speed up responses.
- AI Agent: Handles routine queries, resolves simple tickets, and routes complex cases to the right team members.
- Unified Multichannel Support: Combines email, chat, phone, and social media interactions in one place with consistent AI summaries across all channels.
- Knowledge Base Integration: Pulls information from your help center to suggest accurate answers and summarize frequent issues.
- Analytics and Automations: Tracks performance, response times, and SLAs while automating workflows to improve overall efficiency.
| Pros | Cons |
|---|---|
| AI summarization helps agents quickly understand customer issues and respond faster. | AI tools are only available in higher-tier plans, making them costly for smaller teams. |
| Strong automation and analytics make it easy to manage large volumes of support emails efficiently. | The pricing model can get expensive with separate AI usage fees and complex billing. |
What Sets It Apart
Zendesk is best suited for medium to large businesses and support teams with 20 or more agents. It stands out because it combines AI summarization with automation, analytics, and multi-channel support in one platform.
User Reviews
“One of the less favorable aspects of this solution is the financial limitations. To obtain full functionality and enjoy the known integrations, you will need to upgrade to a certain subscription level.”
“Zendesk AI capabilities, including AI Agents and Copilot, are easy to use and have greatly enhanced our support operations.”
Pricing Overview
- Support Team: $19/agent/month
- Suite Team: $55/agent/month
- Suite Professional: $115/agent/month
- Suite Enterprise: $169/agent/month
- AI features are only available in the Suite team plan onwards
7. Mailbutler: Best AI Email Summarizer for Multi-language Teams
Mailbutler is a popular email productivity tool for Gmail, Outlook, and Apple Mail. It’s used by professionals, small businesses, and freelancers to manage inboxes more efficiently. Its Smart Summarize feature uses AI to turn long or complex emails into short, clear summaries.
Key Features
- AI Email Summaries: Quickly generates short, easy-to-read summaries for long or complex emails with one click.
- Multi-language Support: Creates summaries in English, Spanish, French, German, and Dutch with options to adjust tone and length.
- Team Collaboration: Lets you attach summaries as internal notes to share key points without forwarding full email threads.
- Privacy and Security: Ensures data safety by anonymizing and encrypting emails during the summarization process.
- All-in-One Productivity Tools: Includes features like email tracking, scheduling, signatures, and task management in one extension.
| Pros | Cons |
|---|---|
| Instantly creates clear, multi-language summaries for both incoming and outgoing emails, saving time and improving clarity. | Advanced AI and multi-language features are only available on paid plans. |
| Works directly inside Gmail, Outlook, and Apple Mail with strong privacy protection for sensitive content. | Struggles slightly with highly technical or jargon-heavy emails. |
What Sets It Apart
Mailbutler is perfect for professionals, freelancers, and small teams who need to manage heavy email communication with clarity and speed. It’s especially loved by Apple Mail users, often called the “Best Apple Mail Add-on.” Some users also highlight how its AI summarizer, scheduling, and tracking features make everyday emailing faster and more productive.
User Reviews
“It takes time to learn and use all functionalities. The cost can also be a concern for smaller businesses or individuals who need only basic email features.”
“With the new AI features, Mailbutler has become a superior program. I can recommend it to everyone – light and heavy users of emails.”
Pricing Overview
- Starter: $4/month/user
- Professional: $7/month/user
- Smart: $11/month/user
8. Recall: Best AI Summarizer for Multi-format Content
Recall is an emerging “all-in-one” AI summarizer used for news, articles, video, audio, and more. It combines browser, cloud, and extension-based workflows and is used by researchers, content professionals, and productivity enthusiasts who consume information across multiple formats.
Key Features
- Multi-format Summarization: Summarizes YouTube videos, podcasts, PDFs, web pages, and documents all in one place.
- Knowledge Graph: Connects your saved summaries to show how topics and ideas relate to each other.
- Automatic Organization: Groups and visualizes summaries using categories and mind maps for easy review.
- Augmented Browsing: Displays related notes and summaries from your library while you browse new pages.
- Chrome Extension: Lets you summarize any web page instantly with a single click.
| Pros | Cons |
|---|---|
| Can summarize emails, documents, and links from multiple formats in one place, making it great for managing large volumes of information. | The free plan is very limited, offering only a few summaries before requiring an upgrade. |
| Knowledge Graph and “chat with your summaries” features make it easy to recall and explore key points across messages. | Accuracy can vary for long or highly technical content, requiring manual review. |
What Sets It Apart
Recall is ideal for researchers, marketers, students, and professionals who handle information from many sources, like YouTube videos, emails, newsletters, PDFs, and podcasts in a single day. It serves as a central hub where all your content stays organized and easy to access.
What makes Recall different is how it links your summaries through mind maps and a visual knowledge graph. It goes beyond simple summarization to create a connected knowledge system which you can “chat” with as well.
User Reviews
“I’ve tried Notebook LM too, and it’s solid, especially for structured research with citations. But Recall feels faster and more flexible when you’re working across mixed formats like audio + text.”
“I’ve been using Recall for a bit now, and the chat feature is what really got me hooked.”
Pricing Overview
- Lite: Free (10 AI summaries limit)
- Plus: $7/month
9. Shortwave: Best AI Email Summarizer for High-Volume Gmail Users
Shortwave is a modern email app built by former Google engineers to simplify high-volume inboxes. It focuses on using AI to turn long, cluttered email threads into short, actionable insights, designed for busy professionals and fast-moving teams.
Key Features
- Thread Summaries: Automatically summarizes entire email threads, highlighting key points, decisions, and next steps right at the top of each conversation.
- Smart Bundles: Groups related emails together and provides quick AI-generated overviews for each topic or project.
- Action Detection: Identifies follow-ups, deadlines, and requests within emails so you can prioritize what needs attention first.
- AI Recap: Lets you quickly review all summaries or action items from a specific project, label, or time period.
- Feedback Loop: Improves over time as you rate or adjust summaries, ensuring more accurate results the more you use it.
| Pros | Cons |
|---|---|
| AI summaries highlight key decisions, tasks, and deadlines. | Only supports Gmail and Google Workspace accounts, not Outlook or Apple Mail. |
| Smart bundling groups related conversations and provides quick AI-generated overviews for each topic or project. | Advanced AI summarization features are limited to paid plans. |
What Sets It Apart
Shortwave is best for Gmail users, especially busy professionals and startup teams who deal with high email volumes every day. It stands out for its powerful AI summaries that instantly highlight key points, tasks, and next steps—giving you quick context without opening every message.
User Reviews
“it reads all my past emails and can interpret them in my style. This means i can ask it questions specifically pertaining to my own documents and client interactions”
“Shortwave is quite expensive but an amazing tool. Only the price is a bit bothering.”
Pricing Overview
- Business: $24/month/user
- Premier: $36/month/user
- Max: $100/month/user
10. Jasper: Best AI Summarizing Tool for Marketing Content
Jasper goes beyond simple summarization. It combines AI summarizing with full-scale content creation, making it stand out from the rest. While most tools only condense information, Jasper helps marketers turn those summaries into fresh content to be used across blogs, emails, or social posts—while keeping a consistent brand voice.
Key Features
- AI Email Summarization: Use the Jasper Everywhere extension in Gmail or Outlook to highlight any email and instantly generate a clear, customizable summary.
- Manual Control: Instead of auto-summarizing every thread, you choose what to summarize and how detailed it should be—perfect for tailored, on-demand results.
- Tone and Length Options: Adjust the summary style, tone, and length to fit your audience, from quick recaps to detailed breakdowns.
- Integrated Workflow: Summarize, edit, and rewrite emails directly inside your inbox using the Chrome or Edge extension.
- Repurposing Power: Turn summarized emails into follow-ups, social posts, or reports without switching tools.
| Pros | Cons |
|---|---|
| Lets you summarize, edit, and repurpose emails directly inside Gmail or Outlook using the Jasper Everywhere extension | No one-click automatic summaries — users must manually highlight or paste email text |
| Highly customizable summaries with control over tone, length, and style | More expensive than tools built solely for quick email summarization |
What Sets It Apart
Jasper is ideal for marketers, agencies, and creative teams that need AI support for summarizing and repurposing content. It’s great for turning customer emails into case studies or sales conversations into testimonials.
I also found the Brand Voice Control feature unique. The AI summarizes emails while keeping your brand’s tone and personality consistent across every piece of content, which is a big advantage for teams managing multiple campaigns and clients.
User Reviews
“The only limiting factor I have run into so far is the amount of content Jasper can work with at a time. I would like to be able to have it summarize much larger pieces of content (such as transcriptions of an hour-long podcast.”
“Jasper has been a big help in my business with writing for video scripts, video posts, social media posts, email campaigns, and so much more.”
Pricing Overview
- Pro: $59/month/seat
- Business: Custom pricing
Find the Right AI Email Summarizer Tool
If you spend hours every day sorting through long email threads, an AI email summarizer can be the right tool to add to your tech stack.
The tools listed here have been tested for how well they capture key details, speed up decision-making, and fit naturally into daily workflows.
Some are perfect for customer support teams, others for sales or general productivity — but all are built to make email management faster and smarter.
If you’re ready to take the next step, try pairing an AI email summarizer with a complete customer service solution like Hiver.
It not only summarizes and prioritizes emails but also helps teams assign, track, and respond to conversations faster — all from within their inbox.
Ready to try out AI features that make managing busy inboxes effortless? Test drive Hiver today.
Frequently Asked Questions
What is the best AI email summarizer tool in 2025?
The best tool depends on your workflow. For customer support teams, Hiver stands out because it summarizes emails with context and surfaces next steps. For personal productivity, tools like Superhuman and SaneBox help manage clutter quickly. If you need flexibility, ChatGPT is great for customizable summaries.
How accurate are AI email summarizers?
Most AI email summarizers are highly accurate for everyday emails and support conversations. Accuracy can vary with long, technical threads or unclear writing, but good tools capture the main points reliably. Solutions built for support workflows, like Hiver, tend to produce more actionable summaries because they understand intent and structure.
Can AI email summarizers work with Gmail and Outlook?
Yes. Many summarizers integrate with both platforms. Tools like Hiver, Superhuman, Mailbutler, and Jasper work directly inside Gmail and Outlook. Others, such as ChatGPT or Recall, require copy-paste but still work with email content.
Start using Hiver today
- Collaborate with ease
- Manage high email volume
- Leverage AI for stellar service
