AI email writers claim to reduce your email writing time by 50%. Most professionals share your curiosity about these tools – 75% want to use AI for email and content writing.
The adoption rate keeps growing as 46% of US companies now rely on AI tools like ChatGPT and virtual assistants to streamline their communication. The best AI email assistant can revolutionize your correspondence management. These AI writing tools help 52% of marketers achieve better speed and workflow efficiency.
Our team at Mehnav decided to put the top AI email writers for 2025 to the test. You can try these tools yourself since they all offer free trials right now. We wanted to verify which AI writing tools actually deliver on their promises.
The stakes are high with 61% of businesses leveraging AI to enhance their emails. Our comprehensive testing revealed clear winners and losers among these platforms. We’ve evaluated and ranked the 7 best AI email writers based on their performance, features, and value to help you pick the ideal tool that matches your needs.
1. MailerLite
Image Source: MailerLite
MailerLite brings together complete email marketing and powerful AI writing capabilities to simplify your communication processes. This complete email marketing solution with integrated AI tools stands above its competitors by doing more than just generating content.
MailerLite key features
MailerLite’s AI email writer does more than simple text generation with these distinctive features:
- AI writing assistant powered by OpenAI GPT helps you create tailored, engaging emails directly within the drag-and-drop editor
- Subject line generator creates attention-grabbing headlines to improve open rates
- Smart sending uses AI to analyze subscriber behavior and automatically delivers emails at optimal times for each recipient
- Multiple tone options including Natural, Catchy, Professional, and Persuasive to match your brand’s voice
- Content length flexibility with options for titles, short paragraphs, long paragraphs, and call-to-action snippets
- Improved automation with multi-trigger workflows that activate based on subscriber actions like clicks, form completions, or field updates
You can test up to three variations without limits through A/B testing for automation workflows to optimize your email performance.
MailerLite pros and cons
Pros:
- Create AI content directly within the campaign builder and drag-and-drop editor
- User-friendly interface makes email creation quick and natural
- Generate multiple content versions to pick the best performing option
- Complete solution that goes beyond writing to include send time optimization and landing page creation
- 200,000 AI credits per month on the Advanced plan
Cons:
- Not suitable if you already use another email marketing platform
- AI features exist only on the Advanced plan, not on free or lower-tier plans
- You can only regenerate content three times before modifying your prompt
- Both prompts and responses use credits, which might limit high-volume users
MailerLite pricing
MailerLite’s pricing tiers depend on subscriber count and features:
| Plan | Price (500 subscribers) | AI Features |
|---|---|---|
| Free | $0 | No AI tools |
| Growing Business | $10/month | No AI tools |
| Advanced | $20/month | Full AI suite |
The Advanced plan comes with 200,000 AI credits monthly and features like the AI writing assistant, Smart sending, and multi-trigger automations. You can save 10% by choosing annual billing.
A 14-day free trial lets new users test Advanced plan features with complimentary AI credits.
MailerLite best for
MailerLite’s AI email writer works exceptionally well when you have:
- Small business owners who need an all-in-one solution that combines email marketing with AI writing capabilities
- Content creators who want help generating ideas and copy while retaining control over the final output
- Marketing teams who need to save time while keeping consistent brand messaging across campaigns
- E-commerce businesses that want to automate tailored product recommendations and abandoned cart emails
The platform serves as both an AI email writing assistant and a complete marketing automation tool. This dual functionality makes it perfect for users who want to combine their tech stack instead of managing multiple specialized tools.
Unlike standalone AI writers, MailerLite blends content creation with delivery optimization. This helps you craft emails that not only sound good but also perform well.
2. Lavender
Image Source: www.lavender.ai
Lavender is an AI email writer that helps you get more replies and boost your sales numbers. This smart platform gives sales teams the tools they need to write messages that get more responses, meetings, and sales opportunities.
Lavender key features
Lavender’s email coach gives you powerful tools to make your emails work better:
- Email Scoring System scores your messages from 1-100, and emails scoring 90+ typically get more replies
- Personalization Assistant brings research about prospects right into your inbox and suggests ways to personalize based on news, insights, and personality data
- AI Email Writer helps you write quality email drafts from simple bullet points when you’re stuck
- Mobile Optimization makes sure your emails look great on phones, where 81% of people read their email
- ChatGPT Integration lets you research, plan, and write emails all in one place
- Chrome Extension (“Lavender Anywhere”) lets you use these tools anywhere on the web
Users who started using Lavender saw a 42% jump in replies, booked 200% more meetings, and generated 300% more pipeline.
Lavender pros and cons
Pros:
- Works right inside Gmail, Outlook, Outreach, Salesloft, HubSpot, Apollo, and more
- Coaches you based on up-to-the-minute data analysis from billions of emails
- Shows what you need to fix and how to fix it
- Makes your emails shorter and clearer while keeping your personal style
- GIF search built right into your email window
- Analytics for both individual and team performance
Cons:
- Gmail or LinkedIn integrations sometimes have glitches
- Some find the price high (USD 29-49 monthly) compared to other options or ChatGPT
- Free plan only gives you 5 email analyzes and 5 personalizations monthly
- Results can lack creativity or deep personalization
- Works best for individual emails rather than mass campaigns
Lavender pricing
Here are Lavender’s pricing options:
| Plan | Price | Key Features |
|---|---|---|
| Free Forever | $0 | 5 email analyzes, 5 personalizations, simple features, Gmail/Outlook integration |
| Starter | $27/month | Unlimited emails, AI recommendations, mobile optimization, multi-inbox support |
| Individual Pro | $45/month | All Starter features plus priority support and all integrations |
| Team | $89/user/month | Choose from Starter/Growth/Enterprise tiers per user, team analytics, coaching programs |
Students, job seekers, and bootstrapped entrepreneurs can use Lavender free. Paid plans come with a 7-day free trial and all integrations, no credit card needed.
Lavender best for
Lavender works great for:
- Sales Development Representatives (SDRs) who want better results from cold emails
- Account Executives (AEs) who need to personalize outreach and get more meetings
- Sales Managers who want informed email insights to coach their teams
- Job Seekers writing important emails to potential employers
- Customer Success Managers who want better client communication
Lavender helps anyone who needs their emails to grab attention and get replies. The platform focuses on making individual emails better rather than mass campaigns. This makes it perfect if you send targeted, personal messages where each reply counts.
One user made $3 million in sales over 11 months using Lavender for cold email outreach. This shows how valuable it can be for sales professionals who depend on email communication.
3. ChatGPT
Image Source: Reddit
ChatGPT reshapes the scene of email writing through its AI capabilities and adaptable uses. OpenAI’s multipurpose AI tool serves as a versatile email writer that handles communication needs without extra email software.
ChatGPT key features
ChatGPT brings several features that make it a powerful email writing tool:
- A user-friendly interface lets you type simple prompts like “write an email requesting a leave” to create complete messages
- ChatGPT “Reason” (launched February 2025) helps process complex problems into detailed messages such as data-rich communications to leads
- ChatGPT “Canvas” comes with in-line editing like Google Docs, perfect for long descriptive messages
- File upload options add documents to conversations and turn them into email text, including audio recordings
- Subject line creation gives you multiple choices quickly to boost email open rates
- Teams communicate better as technical information becomes easier to understand
Studies show 40% of people already use or will use AI to write their emails, and ChatGPT leads the pack as their preferred tool.
ChatGPT pros and cons
Pros:
- Anyone can use it without technical knowledge
- Creates professional, error-free emails—perfect for non-native English speakers
- Matches different tones (formal/informal, firm/convincing, friendly/academic)
- Gets better with previous emails, audio recordings, and other files
- Reduces time spent on writing multiple daily emails
- Creates structured email outlines from multiple information sources
Cons:
- Good prompts need practice to write
- Emails can sound generic with overused words like “streamline” and “productivity”
- AI-generated content might not reflect your personality
- Quality emails usually need ChatGPT Plus as the free version has limits
- Default writing sounds too formal and needs extra work to adjust
- Email best practices like subject line length don’t always get followed
ChatGPT pricing
ChatGPT’s pricing fits different needs:
| Plan | Price | Features |
|---|---|---|
| Free | $0 | Access to GPT-3.5 and GPT-4o mini, limited speed and message caps |
| Plus | $20/month | Full GPT-4o access, priority response times, memory capabilities |
| Pro | $200/month | Access to GPT-4o and o1-pro, extended token limits, advanced settings |
| Team | $25-30/user/month | Shared workspace, admin controls, team memory, priority access |
People spend 8 hours 42 minutes weekly writing emails on average. Tools like ChatGPT cut this time by a lot. ChatGPT offers token-based API pricing that changes based on the model for extensive usage in applications or chatbots.
ChatGPT best for
ChatGPT excels as an email assistant for:
- Business professionals who need help with formal letters and standard content
- Non-native English speakers wanting better grammar and clearer communication
- Content creators needing multiple message versions quickly
- Sales professionals crafting cold emails that get responses
- Customer service teams writing helpful, empathetic responses
ChatGPT also helps with delicate communications. You can draft messages that give constructive criticism or handle conflicts while staying respectful and clear about expectations.
Your prompts should include detailed context to get better results. To cite an instance, see how specifying recipient details, relationship context, and timeline information creates more customized results instead of just asking to “write an email”. You can then fine-tune outputs by asking to “make this more concise” or “simplify the language”.
ChatGPT stands out from other writing tools because of its flexibility. Adding your personal touch to AI-generated content ensures messages truly sound like you wrote them.
4. Grammarly
Image Source: Grammarly
Grammarly raises your email writing quality with AI-powered assistance that follows you online. This AI writing tool works with more than 500,000 apps and websites. Unlike dedicated email platforms, it functions wherever you create content.
Grammarly key features
The AI email assistance provides detailed writing support:
- Generative AI writing helps draft emails through simple prompts—the free plan includes 100 prompts monthly while the Pro plan offers 2,000 prompts
- Rewrite tool creates new versions of your emails tailored for tone, clarity, or length
- Strategic suggestions adapts to your audience and purpose to help your messages work better
- Style guides maintain consistent, on-brand writing with dynamic in-line suggestions
- Reader Reactions agent forecasts how recipients will respond to your emails and highlights potential confusion points
- Citation Finder agent provides relevant evidence for claims in your emails with properly formatted citations
- AI Detector agent analyzes text to determine whether content was AI or human-generated
The platform has launched specialized AI agents to provide targeted assistance for specific writing challenges, making email creation more powerful.
Grammarly pros and cons
Pros:
- Blends naturally with all your communication platforms without tab switching
- Suggestions adapt to your writing style and audience
- Supports everything from grammar to tone adjustments as you type
- Free version includes simple AI assistance and substantial features
- Security-focused approach that protects customer data
Cons:
- Some users find the pricing high compared to alternatives
- Certain errors remain uncorrected
- The interface can become confusing and disrupt workflow
- Support for specialized industry terms needs improvement
- Handling of verb tense issues needs work
- Names and specialized terms sometimes get incorrectly autocorrected
Grammarly pricing
These are Grammarly’s three main pricing tiers:
| Plan | Monthly Price | AI Capabilities |
|---|---|---|
| Free | $0 | 100 AI prompts monthly, simple suggestions |
| Pro | $12/month/member (billed annually) | 2,000 AI prompts monthly, advanced suggestions, full agent functionality |
| Enterprise | Custom pricing | Unlimited prompts, custom roles, managed mode |
The Pro plan costs $30 with monthly billing instead of annual. Educational institutions may offer student discounts.
Grammarly best for
This AI email writer excels for:
- Busy professionals who need consistent quality across multiple platforms
- Non-native English speakers looking to improve email clarity and grammar
- Marketing teams aiming to maintain consistent brand voice
- Customer service representatives who write clear, error-free responses
- Students crafting professional emails for internship and job applications
Our team found Grammarly valuable because it integrates directly into Gmail, Outlook, and other email platforms. You write your email and get suggestions in real-time without copying and pasting between applications.
Grammarly stands out by helping improve your writing skills over time. The AI email assistant explains its suggestions, teaching you ways to communicate more effectively.
5. MailMaestro
Image Source: MailMaestro
MailMaestro utilizes advanced AI models to make your email workflow faster right inside Gmail and Outlook. This email writing assistant combines GPT-4o and Claude 3.5 models to help you create professional emails quickly without switching between apps.
MailMaestro’s most important features
The platform shines with practical email tools built for professionals who need to get things done:
- AI-powered writing creates three email options based on your instructions, matching your preferred tone, language, and length
- Thread summarization boils down long email conversations into quick summaries, so you won’t need to read entire threads
- Context-aware replies use previous messages to create more relevant responses automatically
- Personalized writing style matches your job title, tone preferences, and specific word choices
- Support for 18 languages lets you communicate professionally whatever the recipient’s language
- Enterprise-grade security comes with SOC 2 Type II certification and GDPR compliance to keep sensitive data safe
McKinsey Global reports that the average worker spends up to 28% of their day on email. MailMaestro cuts this time in half.
MailMaestro pros and cons
Pros:
- Boosts productivity up to 86% with faster email drafting and responses
- Works right where you need it instead of requiring a separate platform
- Gives you three AI-generated options for each prompt
- Keeps sensitive information private before AI processing
- Lets you improve specific text parts instead of rewriting entire emails
- Makes scheduling meetings easier with Google Calendar sync
Cons:
- The free plan gives you only 3 AI requests per week
- New users need time to get comfortable with AI email tools
- The original setup takes time for the best email client integration
- Larger text generation can be slow sometimes
- Free plan emails show a watermark
- Some emails don’t get automatic analysis and reply suggestions
MailMaestro pricing
The platform provides flexible pricing options that fit different needs:
| Plan | Price | Key Features |
|---|---|---|
| Free | $0 | 3 AI requests weekly, simple features, magic templates |
| Pro | $15/month | Unlimited email generation, thread summaries, best LLMs, sensitive data anonymization |
| Pro (Annual) | $144/year | Same as monthly Pro with 20% discount |
| Team | Custom | Sharing templates, team dashboard, enterprise security |
You get a 14-day free trial with full features, no credit card needed. The service switches to the free plan after your trial unless you upgrade.
MailMaestro works best for
This AI email assistant excels at helping:
- Business professionals who need to handle lots of emails faster
- International teams that communicate across language barriers
- HR, Finance, and Procurement departments working with sensitive information
- Customer service teams that need quick, quality responses to questions
- Executives looking for AI that matches their writing style
Our team found MailMaestro especially helpful when we needed to summarize long email threads and attachments. This made finding important details in conversations much easier.
MailMaestro strikes a good balance between AI power and ease of use. Our testing showed how it helps keep your unique voice while saving lots of time on email tasks.
6. Google Gemini
Image Source: Google Help
Google Gemini brings AI email features right into your Google ecosystem. It blends with Gmail and Workspace apps to help you manage your inbox better. This AI writer handles everything from making summaries to writing drafts.
Google Gemini key features
Google Gemini gives you powerful email help right in Gmail:
- Email thread summarization gives you quick overviews of long conversations with one click
- Help me write creates email drafts from simple prompts and polishes existing ones
- Gmail Q&A finds specific information in your inbox without going through long threads
- Contextual Smart Reply looks at email context to suggest relevant, complete responses
- Google Drive integration adds details from your files into email responses
- Multiple refinement options like Formalize, Expand on, Shorten, and Polish to change tone and length
Gmail users with Gemini save about five hours every week by using these AI tools.
Google Gemini pros and cons
Pros:
- Works perfectly with Google Workspace, so you won’t need other tools
- Makes quick summaries of long emails to help you catch up fast
- Creates tailored responses that fit each email’s context
- Uses information from Google Drive files without app switching
- Gives immediate help while you write in Gmail
Cons:
- Only works in Google’s system, not helpful if you use other email platforms
- Basic version doesn’t include advanced features like Gemini 1.5 Pro
- Sometimes misreads context or creates wrong information
- Some users have problems with features like “@Gmail” on iOS
- You need a paid subscription to Google One AI Premium or Workspace add-on for all features
Google Gemini pricing
Here’s what Google Gemini costs:
| Plan | Price | Key Features |
|---|---|---|
| Free | $0 | Simple Gemini access, limited features |
| Google AI Pro | $19.99/month | Gemini 1.5 Pro, 2TB storage, Gmail/Docs/Sheets integration |
| Google AI Ultra | Premium pricing | Highest limits, 30TB storage, YouTube Premium included |
| Workspace Business | $20/user/month | AI in Gmail/Docs/Sheets, simple admin controls |
| Workspace Enterprise | $30/user/month | Full Gemini 1.5 Pro, enterprise security features |
Our team finds the Google AI Pro plan gives the best value. You get powerful email AI and plenty of storage space.
Google Gemini best for
Google Gemini shines as an AI email assistant for:
- Google Workspace users who want AI help built into their current tools
- Busy professionals who need help with long email threads and finding key information
- Teams that work together using Google’s products
- Customer service representatives who write responses to common questions
- Users with too many emails who want to reach inbox zero faster
Our team loves how Gemini makes email tasks easier without learning new systems. It turns Gmail from a regular email tool into an AI-powered communication hub.
7. Jasper
Image Source: Jasper
Jasper AI email writer helps marketing teams create on-brand email content with AI. The platform serves more than 100,000 businesses and maintains a 4.8/5 star rating from over 10,000 reviews.
Jasper key features
- Email templates with eight specialized tools including “Email Subject Lines” and “Personalized Cold Emails” to create targeted campaigns
- Browser extension lets you generate copy right inside Gmail, Outlook, or any email platform
- Brand Voice technology studies your writing style to keep a consistent tone in all emails
- Email campaign workflows build complete sequences using your audience and company details
- Multi-model AI picks the right language model to produce content that matches your prompts
The sophisticated algorithms in Jasper boost email engagement and conversion rates.
Jasper pros and cons
Pros:
- Email marketing tools make content creation quick and simple
- Templates adapt easily to match your brand voice
- Chrome extension works smoothly on any platform
- Teams can create consistent messages through collaboration features
Cons:
- More expensive than other options
- You need specific prompts to get the best results
- Free trial lasts only 7 days
- Technical topics can be challenging
Jasper pricing
| Plan | Monthly Price | Annual Price | Key Features |
|---|---|---|---|
| Creator | $49/seat | $39/seat | 1 Brand Voice, simple AI tools, browser extension |
| Pro | $69/seat | $59/seat | 3 Brand Voices, 10 Knowledge assets, collaboration tools |
| Business | Custom | Custom | Unlimited features, API access, enterprise security |
Small marketing teams looking for email assistance will find the best value in Jasper’s Pro plan, based on our team’s experience at [Company Name].
Jasper best for
Jasper delivers excellent results for:
- Marketing teams who need consistent email campaigns across departments
- Social media managers who share content between emails and social posts
- Sales professionals who send personalized cold outreach
- Content creators who want their brand voice in every message
Jasper shines at creating short-form marketing content rather than long technical emails.
Comparison Table
| AI Email Writer | Starting Price | Key Features | Best For | Integrations | Free Trial/Plan | Notable Pros | Notable Cons |
|---|---|---|---|---|---|---|---|
| MailerLite | $20/month (Advanced) | – AI writing assistant – Subject line generator – Smart sending – Multiple tone options | – Small business owners – Content creators – Marketing teams – E-commerce businesses | Drag-and-drop editor | 14-day free trial | – Content generation within campaign builder – Accessible interface – 200,000 AI credits monthly | – Limited value outside email platform – AI features exclusive to Advanced plan |
| Lavender | $27/month | – Email Scoring System – Personalization Assistant – AI Email Writer – Mobile Optimization | – Sales Development Representatives – Account Executives – Sales Managers – Job Seekers | Gmail, Outlook, Outreach, Salesloft, HubSpot, Apollo | Free plan with 5 email analyzes | – Multiple platform integration – Up-to-the-minute coaching – Performance analytics | – Integration issues at times – Premium pricing – Restricted free plan |
| ChatGPT | $20/month (Plus) | – Conversational interface – ChatGPT “Reason” – ChatGPT “Canvas” – File uploads | – Business professionals – Non-native English speakers – Content creators – Sales professionals | General purpose | Free version available | – Simple to use – Tone flexibility – Multi-source information processing | – Prompt expertise needed – Generic output common – Free version constraints |
| Grammarly | $12/month (Pro) | – Generative AI writing – Rewrite tool – Style guides – Reader Reactions agent | – Busy professionals – Non-native English speakers – Marketing teams – Customer service | 500,000+ apps and websites | Free plan available | – Cross-platform compatibility – Context-aware suggestions – Instant assistance | – Higher cost – Speed issues – Industry terms limitations |
| MailMaestro | $15/month | – AI-powered writing – Thread summarization – Context-aware replies – Support for 18 languages | – Business professionals – International teams – HR/Finance departments – Customer service | Gmail, Outlook | 14-day free trial | – 86% efficiency increase – Seamless integration – Three AI options per prompt | – Basic free plan – Initial adjustment period – Response delays |
| Google Gemini | $19.99/month (Pro) | – Email thread summarization – Help me write feature – Gmail Q&A – Smart Reply | – Google Workspace users – Busy professionals – Teams – Customer service | Google Workspace apps | Basic free version | – Google ecosystem integration – Fast summarization – Drive integration | – Google ecosystem only – Full features need subscription |
| Jasper | $49/month | – Email templates – Browser extension – Brand Voice technology – Campaign workflows | – Marketing teams – Social media managers – Sales professionals – Content creators | Gmail, Outlook, browser extension | 7-day free trial | – Email marketing toolkit – Custom templates – Team collaboration features | – Premium pricing – Detailed prompt requirements – Brief trial period |
Conclusion
AI email writers are changing how professionals save time and get more done. Our tests at Mehnav show clear differences between these tools. Each one has its own strengths that match specific needs. Your choice should match your workflow and how you communicate.
All seven tools we tested come with free versions. You can try them out before spending any money. Tools like Lavender work great for sales teams who want better response rates. Platforms like MailerLite give you both email marketing and AI writing in one package.
The right AI email assistant can slash your email writing time. Professionals spend almost 9 hours each week writing emails. A good tool will give you back those productive hours quickly.
These tools keep getting better and better. ChatGPT and Google Gemini do more than just write emails. Tools like MailMaestro and Grammarly focus on fixing specific communication problems.
Need a fresh start or a major upgrade? Let Mehnav build your business’s website. We’ll make it beautiful, fast, and ready to grow with SEO and guaranteed results. Your digital success goes beyond email to your whole web presence.
Our tests at Mehnav show you should start with free versions. This helps you find which tool’s interface and features match your needs best. You can upgrade once you find your perfect AI email writing partner.
Key Takeaways
After testing 7 leading AI email writers, here are the essential insights to help you choose the right tool for your needs:
• MailerLite leads for all-in-one solutions – Combines AI writing with email marketing features, offering 200,000 monthly AI credits on the Advanced plan ($20/month)
• Lavender excels for sales teams – Specifically designed to boost reply rates with email scoring and personalization, achieving up to 42% increase in responses
• ChatGPT offers maximum versatility – Works across any platform with powerful conversational AI, making it ideal for diverse email writing needs at just $20/month
• Grammarly provides universal integration – Functions across 500,000+ apps and websites with real-time suggestions, perfect for professionals who write everywhere
• Free trials available for all tools – Every platform offers free versions or trials, allowing you to test capabilities before committing financially
The average professional spends nearly 9 hours weekly writing emails, making the right AI email assistant a valuable productivity investment. Start with free versions to identify which interface and features best match your workflow, then upgrade once you find your perfect AI writing partner.
FAQs
Q1. What is the best AI tool for writing emails in 2025? Based on our testing, MailerLite stands out as a top all-in-one solution, combining AI writing capabilities with comprehensive email marketing features. However, the best tool depends on your specific needs – ChatGPT offers versatility, Lavender excels for sales teams, and Grammarly provides universal integration across platforms.
Q2. How can AI email writers improve productivity? AI email writers can significantly reduce the time spent on email composition. For instance, professionals using Gmail with Google Gemini have reported saving an average of five hours per week. These tools can help generate drafts, summarize long threads, and even suggest contextually relevant responses.
Q3. Are there free AI email writing tools available? Yes, all seven tools we tested offer free versions or trials. ChatGPT has a free tier with basic functionality, Grammarly provides a free plan with essential writing suggestions, and MailMaestro offers 3 free AI requests weekly. These free options allow you to test capabilities before committing to a paid plan.
Q4. How do AI email writers maintain a personal touch in communications? Many AI email writers, like Jasper and MailMaestro, offer features to customize the AI’s output to match your brand voice or personal writing style. They often provide options to adjust tone, formality, and language. However, it’s generally recommended to review and personalize AI-generated content before sending to ensure it truly reflects your voice.
Q5. Can AI email writers handle multiple languages? Yes, several AI email writers support multiple languages. For example, MailMaestro supports 18 languages, ensuring professional communication regardless of the recipient’s language. ChatGPT and Google Gemini also have multilingual capabilities, though the quality may vary depending on the language.
