Writing, replying, and managing emails every day can be very time-consuming. If you’re a business owner, freelancer, marketer, or office professional, you likely handle dozens, or sometimes even hundreds, of emails a day. AI email assistants have come to solve this problem.
Over the past few months, I’ve explored a number of AI email tools. Some tools simply help with writing emails, while others use AI to suggest replies, organize inboxes, and even schedule meetings. Some tools are perfect for increasing productivity, while others are designed for sales and marketing teams.
In this guide, I’ve only included the AI email assistants that I found best in terms of features, ease of use, pricing, and overall value. Whether you use Gmail, Outlook, or another email platform, you’ll find the best AI email tool for your needs here.
Grammarly AI
Best AI writing assistant for grammar, tone, and clarity
- Free plan available
- Pro from $12/month (billed annually)
If you write emails daily, whether for work, to reply to clients, or to maintain professional communication, Grammarly AI is a tool that can save a lot of time. I’ve used it for quite some time, and the best part is that it not only fixes grammar mistakes, but also makes the entire email more professional, clear, and natural with the help of AI.
Its AI writing assistant improves the tone of the email, rewrites sentences, and even generates a complete email if needed. Whether you work in Gmail, Outlook, or a browser, Grammarly works smoothly almost everywhere.
Key Features
- AI Email Writer
- Grammar & Spell Checker
- AI Rewrite Suggestions
- Tone Detection
- Clarity Improvements
- AI Writing Assistant
- Plagiarism Checker
- Generative AI Prompts
- Email Reply Suggestions
- Browser Extension
- Microsoft Word Integration
- Gmail & Outlook Support
- Writing Analytics
- Team Collaboration
- Mobile Keyboard Support
Benefits
- Makes email writing extremely fast and professional.
- Grammar and spelling errors are automatically corrected.
- The AI rewrite feature provides very natural suggestions.
- Easily integrates with Gmail, Outlook, and your browser.
- Very easy to use, even for beginners.
- Supports different writing styles (formal, friendly, professional).
- Very useful for daily professional communication.
- The free version is also good for basic users.
Cons
- Advanced AI features are only available in the Premium plan.
- Sometimes the AI suggests unnecessary sentence changes.
- Plagiarism checker is not available in the free version.
- AI features do not work without an internet connection.
- Premium subscription may be a bit expensive for individual users.
Best For
- Business Professionals
- Email Writing
- Students
- Content Writers
- Freelancers
- Marketing Teams
- Customer Support Teams
- Bloggers
- Corporate Employees
- Remote Workers
Pricing
| Plan | Price |
|---|---|
| Free | $0 |
| Pro | Starts at $12/month (Annual Billing) |
| Enterprise | Custom Pricing |
If you want an AI tool that makes every email more professional and error-free, Grammarly AI is one of the best options. I found its AI suggestions to be quite accurate and natural, especially for business emails and client communication. It can improve the workflow of almost anyone, from beginners to professionals. If you write emails daily, it may be worth investing in Grammarly AI.
Microsoft Copilot
Best AI assistant built into Word, Excel, and Windows
- Free plan available
- Copilot Pro from $20/month
If you use Microsoft Outlook, Word, Excel, Teams or Microsoft 365 daily, Microsoft Copilot can significantly improve your productivity. I explored its AI email features and the best part is that it helps not only in writing emails but also in summarizing old email conversations, suggesting quick replies and creating professional drafts.
The Copilot experience within Outlook is quite smooth. If you receive a lot of emails daily, this AI assistant helps in managing them quickly and reduces repetitive writing to a great extent.
Key Features
- AI Email Writing
- Smart Email Replies
- Email Summarization
- AI Writing Assistant
- Outlook Integration
- Microsoft Word Integration
- Excel AI Assistance
- Teams Meeting Summaries
- AI Content Generation
- Calendar Assistance
- Document Summaries
- AI Rewrite Suggestions
- Microsoft 365 Integration
- Enterprise Security
- Cloud-Based AI Assistant
Pros
- Integrates seamlessly with Outlook.
- Generates professional and natural email drafts.
- The AI summary of long email threads is very useful.
- Also works with Microsoft Word, Excel, and Teams.
- Time-saving automation improves productivity.
- Excellent choice for business and enterprise users.
- Provides enterprise-grade security and privacy.
- Provides the best experience for users using the Microsoft ecosystem.
Cons
- AI features are limited in the free version.
- A Microsoft 365 subscription may be required.
- Pricing may be a bit expensive for individual users.
- The best experience is found within the Microsoft ecosystem.
- At times, AI-generated content may need to be manually edited.
Best For
- Outlook Users
- Microsoft 365 Users
- Business Professionals
- Corporate Teams
- Sales Teams
- Customer Support Teams
- Project Managers
- Enterprise Organizations
- Remote Teams
- Office Productivity
Pricing
| Plan | Price |
|---|---|
| Microsoft Copilot | Starts at $30/user/month (Business) |
| Microsoft 365 Personal/Family with Copilot | Starts at $9.99/month |
| Microsoft 365 Copilot Chat | Limited Free Features Available |
| Enterprise Plans | Custom Pricing |
If you already use Microsoft Outlook and Microsoft 365, Microsoft Copilot is a powerful AI assistant that can take email writing, meeting summaries, and office productivity to the next level. In my experience, its biggest advantage is its deep integration with Microsoft apps. If your entire workflow is based on the Microsoft ecosystem, investing in Copilot could be a smart decision.
ChatGPT
Best for versatile AI writing, brainstorming, and editing
- Free plan available
- Plus from $20/month (billed monthly)
When it comes to AI email assistants, ChatGPT is one of the most popular and versatile tools. I’ve used it extensively for writing daily emails, creating client replies, and professional communication. The best part is that if you just write a few points, ChatGPT converts them into a professional and natural email.
Whether you’re sending a proposal to a client, writing a job application, or sending a follow-up email, ChatGPT can adjust the tone of the email to suit each situation. If you use Gmail or Outlook, you can copy and paste the generated email and use it in just a few seconds. Daily email writing becomes very fast and easy.
Key Features
- AI Email Writing
- Email Reply Generator
- AI Rewrite & Improve
- Professional Tone Suggestions
- Grammar & Clarity Improvements
- Email Summarization
- Custom Writing Prompts
- Multilingual Support
- Business Email Templates
- Brainstorming Assistant
- Follow-up Email Generator
- Content Generation
- Chat History
- GPT-4.1 & Advanced Models (Paid Plans)
- Web Browsing & Research (Supported Plans)
Pros
- Generates professional and natural emails very quickly.
- Can write emails in a formal, friendly, and persuasive tone.
- Very useful for client proposals, follow-ups, and business communication.
- Supports multiple languages.
- Easy to customize emails according to the prompt.
- Can generate not only emails, but also reports, blogs, and documents.
- Easy to use for both beginners and professionals.
- The free version is quite useful for basic email writing.
Cons
- Real-time Gmail or Outlook integration is not built-in.
- You may occasionally need to manually edit AI-generated emails.
- Advanced models and premium features are only available with paid plans.
- Providing too many generic prompts can result in generic output.
- Privacy policies should be considered when sharing sensitive or confidential business data.
Best For
- Business Email Writing
- Client Communication
- Sales Emails
- Job Applications
- Customer Support Replies
- Freelancers
- Content Writers
- Marketing Professionals
- Small Business Owners
- Students & Professionals
Pricing
| Plan | Price |
|---|---|
| Free | $0 |
| Plus | Starts at $20/month |
| Pro | Starts at $200/month |
| Team | Starts at $30/user/month (annual billing) |
| Enterprise | Custom Pricing |
If you want an AI assistant that helps with almost every type of writing, not just emails, ChatGPT is one of the most powerful options. In my experience, its output is quite natural and polished for client emails, business proposals, follow-ups, and professional communication. If you want to save time on daily email writing, ChatGPT is definitely a tool worth trying.
Jasper AI
Best AI writer for marketing copy and brand-voice content
- Free trial available
- Creator from $39/month (billed annually)
If you’re writing marketing emails, sales campaigns, or promotional content, Jasper AI is a powerful AI writing assistant. I tested Jasper AI for email campaigns and marketing copy, and the best part is that it generates not only emails but also high-converting subject lines, follow-up emails, and personalized marketing messages very quickly.
Jasper AI has a simple interface and offers several ready-made templates that make the email writing process quite fast. If you’re a freelancer, digital marketer, or business owner, this tool can significantly improve your productivity.
Key Features
- AI Email Writer
- Marketing Email Templates
- AI Copywriting
- Campaign Email Generator
- AI Rewrite Tool
- Brand Voice Support
- AI Content Generator
- Email Subject Line Generator
- Multiple Language Support
- Team Collaboration
- SEO Content Assistance
- AI Chat Assistant
- Browser Extension
- API Access
- Marketing Workflow Automation
Pros
- Provides excellent AI output for marketing and sales emails.
- Generates high-converting email copy and subject lines.
- The Brand Voice feature maintains consistent writing.
- Easy to use for both beginners and professionals.
- Multiple templates make email writing much faster.
- Team collaboration features are useful for agencies and businesses.
- Provides a single platform for both content creation and email marketing.
- Supports multiple languages.
Cons
- There is no free plan available.
- Pricing may be a bit expensive for beginners and individual creators.
- Detailed prompts are required for best results.
- Advanced features are only available in higher plans.
- Sometimes AI-generated content may require manual editing.
Best For
- Email Marketing
- Sales Teams
- Digital Marketers
- Marketing Agencies
- Small Businesses
- E-commerce Brands
- Content Creators
- Freelancers
- Copywriters
- Startup Founders
Pricing
| Plan | Price |
|---|---|
| Creator | Starts at $39/month |
| Pro | Starts at $59/month |
| Business | Custom Pricing |
If your focus is on email marketing, sales outreach, and promotional campaigns, Jasper AI is one of the best AI writing tools on the market. In my experience, its Brand Voice, marketing templates, and AI-powered email generation feature are quite impressive. The pricing may seem a bit high for individual users, but for businesses and marketing teams, the investment can be worthwhile.
Lavender AI
Best AI email coach for sales reps and faster replies
- Free plan available
- Starter from $29/month (billed annually)
If you’re sending cold emails, doing sales outreach, or booking meetings with clients, Lavender AI is a very useful AI email assistant. I explored this tool and the best part is that it not only helps with email writing, but also optimizes emails to increase your chances of getting a reply.
Lavender AI provides real-time suggestions, analyzes the tone of the email, and tells you how effective your message is. If you work in sales, business development, or client acquisition, this tool can save you a lot of time.
Key Features
- AI Email Writer
- Real-Time Email Coaching
- Email Personalization
- AI Reply Suggestions
- Email Score & Quality Analysis
- Subject Line Optimization
- Sales Email Assistant
- Gmail Integration
- Outlook Integration
- Prospect Research
- AI Tone Analyzer
- Writing Improvement Suggestions
- Team Analytics
- Email Performance Insights
- CRM Integration
Pros
- Specially designed for sales and cold emails.
- Real-time writing suggestions improve email quality.
- Greatly helps with writing personalized emails.
- Easily integrates with Gmail and Outlook.
- Provides useful insights to improve reply rates.
- Beginner-friendly interface and easy setup.
- Increases productivity for sales teams and agencies.
- Integration with CRM tools is available.
Cons
- The free plan has very limited features.
- Focuses more on sales emails than general email writing.
- Premium plans may be expensive for individual users.
- The best experience is for English emails.
- Advanced analytics are only available in paid plans.
Best For
- Sales Professionals
- Cold Email Outreach
- Business Development Teams
- SDR & BDR Teams
- Marketing Agencies
- Recruiters
- Freelancers
- Startup Founders
- SaaS Companies
- B2B Sales Teams
Pricing
| Plan | Price |
|---|---|
| Basic | Free |
| Starter | Starts at $27/month |
| Individual Pro | Starts at $45/month |
| Team | Custom Pricing |
If you regularly send sales emails, cold outreach, or do client prospecting, Lavender AI is an excellent AI assistant. In my experience, its real-time coaching, personalization, and email scoring features are quite useful. This isn’t a general AI writing tool, but a platform specifically optimized for sales professionals. If your goal is to generate more replies and meetings, Lavender AI is definitely worth considering.
Conclusion
If you write emails daily or rely on professional communication for your business, a good AI email assistant can save you a lot of time. All the tools included in this guide were selected with different needs in mind, so the right choice will depend on your work style and budget.
If I had to choose an all-around AI email assistant, ChatGPT would be the best choice because it excels at writing professional emails, crafting replies, and generating content in different tones. Grammarly AI is excellent for those looking to improve the grammar, clarity, and professional tone of their emails. If you use Microsoft Outlook and Microsoft 365, Microsoft Copilot might be the best option for you. Jasper AI, on the other hand, is quite effective for marketing and sales emails, while Lavender AI is specifically designed to improve cold emails and sales outreach.
Finally, be sure to use any AI email assistant’s free plan, free trial, or demo before purchasing a paid plan. This will help you understand which tool best suits your workflow, budget, and business requirements. The right AI email assistant can not only increase your productivity but also help you write better and more effective emails.
