20 Best AI Email Writing Tools for Businesses in 2027

AI email writing tools are becoming valuable business resources for companies that want to communicate faster, improve the quality of their messages, and manage large volumes of email without sacrificing a professional tone. From sales outreach and customer support to newsletters, follow-ups, and internal communication, these tools can help teams draft, edit, personalize, and optimize emails more efficiently.

For businesses, the real benefit is not simply generating an email in seconds. It is creating messages that are relevant to the recipient, consistent with the company’s brand, and appropriate for the intended purpose. A sales email should encourage a response without sounding pushy. A customer support reply should be clear and empathetic. A marketing email should communicate value and give subscribers a reason to take action.

The following guide explores 20 AI email writing tools worth considering in 2027. It focuses on their main capabilities, practical business applications, and the types of teams most likely to benefit. Because software features and pricing can change, businesses should confirm current plan details directly with each provider before making a purchasing decision.

20 best AI email writing tools for businesses in 2027

1. ChatGPT – Best for flexible business email writing

Best for: General business communication, sales messages, customer replies, and email templates

ChatGPT is a flexible option for businesses that need to write different types of emails. A user can provide a few notes and ask it to create a professional introduction, customer response, sales follow-up, meeting request, partnership proposal, or internal announcement.

Its strength is the ability to adapt to instructions. Businesses can specify the recipient, purpose, preferred tone, length, and desired action. For example, a sales manager can request three versions of a follow-up email: friendly, formal, and direct. The team can then select the version that best suits the prospect.

ChatGPT is also useful for improving existing drafts, simplifying complicated messages, and creating reusable templates. It is not a dedicated email delivery platform, so businesses still need their normal email client or marketing software to send campaigns.

2. Grammarly – Best for professional tone and clarity

Best for: Editing, proofreading, and polishing everyday business emails

Grammarly helps businesses improve the quality of their written communication. Its AI writing capabilities can help users draft, rewrite, shorten, and adjust messages while checking grammar, spelling, clarity, and tone.

This is particularly useful for employees who communicate with customers, suppliers, executives, and business partners throughout the day. A message that sounds too abrupt can be made more considerate, while a lengthy explanation can be shortened without losing its main point.

Grammarly is valuable when a company wants more consistent communication across departments. However, it should not replace human review of sensitive messages, contractual commitments, or technical information.

3. Google Gemini in Gmail – Best for Google Workspace businesses

Best for: Gmail users who want AI assistance inside their inbox

Google Gemini brings AI writing assistance into Google’s productivity environment. Eligible Gmail users can use its writing capabilities to draft messages, refine existing text, and generate replies based on the context of an email conversation.

The advantage is convenience. Employees do not necessarily have to copy an email into a separate AI application before asking for help. They can work within Gmail, where their conversations and daily correspondence already take place.

For a business using Google Workspace, this can reduce the friction involved in adopting AI-assisted writing. Availability and capabilities depend on the account, subscription, and region, so administrators should check the current Workspace plan details.

4. Microsoft Copilot for Outlook – Best for Microsoft 365 organizations

Best for: Companies that rely on Outlook and Microsoft 365

Microsoft Copilot is a natural option for organizations that already use Outlook and other Microsoft 365 applications. It can help users draft emails from instructions, summarize lengthy conversations, and improve the clarity or tone of messages.

A manager could use Copilot to turn meeting notes into a follow-up email containing decisions, responsibilities, and next steps. A customer service employee could use it to create a more structured response to a complicated inquiry.

Its biggest advantage is its connection to the Microsoft work environment. Businesses should still verify which Copilot features are included in their specific subscription and whether additional licensing is required.

5. Jasper – Best for marketing email campaigns

Best for: Marketing teams, campaign copy, and brand-consistent messaging

Jasper is designed for businesses that produce marketing content at scale. Its capabilities can support promotional emails, product announcements, campaign concepts, subject lines, and other customer-facing copy.

A marketing team can provide information about a product, target audience, offer, and brand voice, then use Jasper to develop several email variations. This makes it useful when a business needs to maintain a consistent message across different campaigns.

Jasper is more relevant to marketing departments than employees who simply need help replying to ordinary emails. Companies should review generated claims, product descriptions, and promotional language before publishing.

6. Copy.ai – Best for sales and marketing workflows

Best for: Repeatable sales messages and go-to-market content

Copy.ai can help businesses develop sales emails, prospecting messages, follow-ups, and marketing copy. It is particularly useful when email writing is part of a broader sales or go-to-market process.

Rather than creating every message from scratch, a team can develop repeatable workflows based on a campaign brief or defined sales process. This can help sales representatives prepare consistent messages for different audience segments.

Copy.ai is worth considering for companies that need more than a basic email generator. However, automation should not become an excuse for sending generic messages to large lists of unqualified contacts.

7. Lavender – Best for sales email coaching

Best for: B2B sales representatives and outbound sales teams

Lavender focuses on improving sales emails. It provides writing assistance and coaching intended to help sales professionals create more relevant, readable, and personalized outreach.

A representative can use it to review an email before sending, identify areas that need improvement, and refine the message for the intended prospect. This is useful for teams that send cold emails, follow-up messages, and account-based outreach.

Lavender is particularly relevant to businesses with dedicated sales development representatives. Its value is not simply producing more emails; it is helping salespeople communicate more effectively. Teams should assess its integrations and available coaching features before selecting a plan.

8. MailMaestro – Best for drafting replies in Outlook and Gmail

Best for: Professionals handling lengthy email conversations

MailMaestro helps users draft, rewrite, and respond to emails. It is useful when an employee receives a long message and needs to prepare a clear response without spending too much time composing it.

For example, a project manager can use an AI assistant to turn several points into a structured update. A customer service employee can use it to prepare a polite reply that addresses the customer’s main concerns.

MailMaestro is worth evaluating for teams that want writing assistance within their existing email workflow. Businesses should review the permissions requested by the integration and confirm how company information is handled.

9. Superhuman Mail – Best for high-volume email professionals

Best for: Executives, managers, founders, and busy professionals

Superhuman Mail combines an email client with productivity features and AI assistance. Its appeal is strongest for people who handle a large volume of correspondence and want to move through their inbox more efficiently.

AI-assisted drafting, rewriting, and summarization can help users manage communication without repeatedly switching between applications. Features designed around keyboard shortcuts and faster inbox workflows can also benefit people who spend a significant part of their working day in email.

Superhuman is not primarily a mass email marketing platform. It is better suited to professionals who want a more streamlined personal or business inbox experience.

10. Shortwave – Best for AI-powered Gmail productivity

Best for: Gmail users managing complex inboxes

Shortwave is an AI-focused email application built around Gmail workflows. Its features include tools for searching, organizing, understanding, and working with email conversations.

For businesses, the ability to find information in previous discussions can be just as valuable as generating a new email. An employee preparing a client update, for instance, may need to review earlier decisions before writing a response.

Shortwave is worth considering for Gmail users who want an AI-assisted inbox rather than a standalone email copywriting tool. Companies should check its current account compatibility and plan limitations.

11. Rytr – Best for short, affordable email drafts

Best for: Small businesses and entrepreneurs

Rytr is an AI writing tool that can help users produce short emails, business messages, and other forms of written content. Its appeal is its relatively straightforward approach: provide a topic or instruction, select an appropriate tone, and generate a draft.

A small business owner could use Rytr to write a quotation follow-up, respond to a basic inquiry, or prepare an introductory message for a potential partner. It can also help create variations when a company wants to test different ways of communicating an offer.

Rytr is a practical option for businesses that do not need a complex email automation system. Users should review the output for accuracy and make sure it reflects the company’s actual policies and services.

12. Writesonic – Best for marketing-focused email content

Best for: Promotional emails, product announcements, and campaign ideas

Writesonic supports the creation of marketing content, including email copy. Businesses can use it to develop promotional messages, draft product announcements, and generate alternative subject lines or calls to action.

For example, an ecommerce business launching a new product could use Writesonic to develop an announcement email, a reminder, and a final promotional message. Each draft can be adjusted to suit the campaign’s audience and objective.

Writesonic is most useful when email is one part of a wider content marketing strategy. It does not replace a dedicated email service provider for subscriber management, campaign delivery, or deliverability monitoring.

13. Anyword – Best for testing marketing message variations

Best for: Marketing teams focused on copy performance

Anyword is designed to help marketers generate and evaluate copy variations. For email campaigns, this can be useful when a team wants to explore different subject lines, promotional angles, opening paragraphs, or calls to action.

A company promoting a software subscription, for example, might test messaging that emphasizes cost savings against messaging that emphasizes productivity. Anyword can help generate alternatives for the team to review and test.

Its potential value is in supporting a more deliberate approach to copy experimentation. Performance predictions should not be treated as guaranteed results; actual campaign data remains the best way to determine what works with a particular audience.

14. GetResponse – Best for AI-assisted email marketing campaigns

Best for: Businesses combining email copywriting with campaign delivery

GetResponse offers email marketing tools alongside AI-assisted content capabilities. This makes it relevant to businesses that want to create campaign copy and manage the process of sending messages from one platform.

A company can use an email marketing platform to prepare newsletters, promotional messages, and automated sequences. The AI writing component can help with drafting and refining the copy, while the broader platform supports campaign management.

GetResponse is particularly useful for small and medium-sized businesses that want to connect email writing with subscriber lists, automation, and campaign reporting. The available AI features may depend on the plan.

15. Omnisend – Best for ecommerce email writing

Best for: Online stores and ecommerce marketing teams

Omnisend is built around ecommerce marketing, with tools for email and SMS campaigns. Its AI-assisted writing capabilities can help merchants create promotional messages and customer communications.

An online store might use it to prepare product announcements, seasonal promotions, abandoned-cart messages, and post-purchase communication. The advantage is that writing takes place within a platform designed for ecommerce campaign workflows.

Omnisend is most suitable for merchants who need more than a general-purpose AI email writer. Businesses should compare its automation options, integrations, and pricing against their store size and campaign volume.

16. Mailchimp – Best for small business email marketing

Best for: Small businesses, newsletters, and promotional campaigns

Mailchimp is a widely used email marketing platform with AI-supported marketing capabilities. Businesses can use its campaign tools to create newsletters, promotions, and customer communications, with AI assistance available for certain content tasks and plans.

For a small business, the main benefit is having campaign creation and audience management in the same environment. A retailer, for instance, can prepare an email announcing a new collection and manage the subscriber campaign through the platform.

Mailchimp is not simply an AI writing assistant. Its broader value comes from connecting content creation with email marketing operations. Companies should check current plan restrictions and which AI features are available to their account.

17. HubSpot – Best for CRM-connected sales and marketing emails

Best for: B2B companies and businesses managing customer relationships

HubSpot offers AI-supported content capabilities across its customer platform. Its relevance to email writing comes from combining message creation with CRM information, marketing activity, and sales processes.

A sales team can use HubSpot to support prospect communication and follow-up workflows. Marketing teams can create campaign content while working with contact lists and customer segments. This connection can make email communication more relevant when the underlying customer data is accurate and appropriately maintained.

HubSpot is especially useful for businesses that want email writing to be part of a larger CRM and marketing strategy. Its advanced capabilities can require higher-tier subscriptions, so businesses should compare plans carefully.

18. MailerLite – Best for newsletters and simple email campaigns

Best for: Creators, small companies, and newsletter publishers

MailerLite provides tools for creating and sending email campaigns. Its AI-assisted writing capabilities can help businesses prepare newsletter content and promotional messages, depending on the available plan and features.

A consultant could use MailerLite to write a monthly newsletter, while a small online business could prepare product updates and special announcements. Its campaign-focused environment is useful for organizations that want to manage subscribers and email content without building a complicated marketing system.

MailerLite is a good option to evaluate when simplicity matters. Businesses should verify which AI writing functions are currently included in their chosen subscription.

19. SmartWriter – Best for personalized cold email outreach

Best for: B2B prospecting and personalized outreach

SmartWriter focuses on helping businesses create personalized outreach messages. It is relevant to sales teams that need to contact potential customers with messages that reflect the prospect’s business or professional context.

Personalization matters because generic cold emails are easy to ignore. A relevant opening that explains why a particular company might benefit from a service can be more meaningful than a message sent to hundreds of unrelated recipients.

SmartWriter can help speed up the drafting process, but sales teams still need to verify the information used for personalization. They should also follow applicable email marketing, privacy, and anti-spam requirements.

20. Mailmeteor – Best for personalized email campaigns using spreadsheets

Best for: Small teams, educators, recruiters, and business outreach

Mailmeteor is known for mail merge and personalized email workflows, particularly for users working with Google Workspace. Its tools can help teams send messages that include recipient-specific information rather than manually composing every email.

For example, a recruiter could prepare personalized interview invitations, while a small business could send tailored introductions to a list of relevant contacts. AI-assisted writing can help prepare the message, while mail merge handles recipient-specific fields.

Mailmeteor is worth considering when a business needs to combine personalized writing with practical campaign distribution. It is important to distinguish personalized outreach from permission-based newsletters and follow the rules that apply to each type of communication.

How to choose the right AI email writing tool

The best tool depends on the kind of email a business sends most frequently. A company writing hundreds of customer support replies has different requirements from a marketing agency preparing promotional campaigns or a B2B sales team contacting prospective clients.

Here are some practical recommendations:

These are use-case recommendations rather than a universal ranking. Independent comparisons also distinguish between everyday inbox assistants, sales-focused writing tools, and campaign-oriented email platforms.

 

1. Consider your existing email platform

Before purchasing another subscription, check whether your current email provider already offers AI writing assistance. Google Workspace users may find Gemini convenient, while organizations using Microsoft 365 may prefer Copilot for Outlook.

Using a tool that works inside an existing environment can reduce employee training and avoid unnecessary switching between applications.

2. Identify the type of email you need to write

Not every AI email writer is designed for the same purpose.

• Customer communication: Prioritize clarity, tone, and accurate replies.

• Sales outreach: Look for personalization, prospect context, and writing feedback.

• Email marketing: Consider subject line generation, campaign copy, audience segmentation, and automation.

• Internal communication: Focus on summarization, professional tone, and concise messages.

• Newsletters: Look for tools that work alongside subscriber management and campaign delivery.

3. Evaluate integrations

An AI email writing tool becomes more useful when it fits into the software your team already uses.

Check whether it supports Gmail, Outlook, Google Workspace, Microsoft 365, your CRM, or your email marketing platform. Also determine whether it works through a browser extension, an application, or a built-in integration.

4. Review privacy and security

Business emails can contain customer information, financial details, contracts, employee records, and confidential company plans.

Before connecting an AI tool to a company inbox, review its data retention policies, security controls, access permissions, and whether submitted information may be used to improve its models. For regulated or sensitive communication, involve the appropriate IT, legal, or security team.

5. Compare pricing with actual usage

A free tool may be sufficient for an entrepreneur who writes a few emails every day. A larger company may need paid access, team administration, centralized billing, integrations, and higher usage limits.

Do not choose software based only on its advertised starting price. Calculate the expected cost for the number of employees who will use it and compare that cost with the time it could realistically save.

How businesses can use AI email writing tools effectively

Buying an AI email writer does not automatically improve business communication. The way employees use it matters.

A practical approach is to establish a few company-approved instructions that guide how emails should be written.

For example, a business could use the following instruction:

Write a professional, friendly business email in American English. Keep the message concise, avoid exaggerated claims, explain the main benefit clearly, and finish with one relevant call to action. Do not invent facts or make promises that are not included in the information provided.

Teams can create additional instructions for sales outreach, customer support, payment reminders, partnership proposals, and newsletters.

A simple business workflow could look like this:

1. Identify the recipient and purpose of the email.

2. Provide the AI tool with accurate background information.

3. Generate an initial draft.

4. Review the message for accuracy, tone, and relevance.

5. Add any necessary customer-specific details.

6. Check links, names, dates, figures, and attachments.

7. Send the message through the appropriate email platform.

8. Monitor responses and improve future communication.

The important principle is to use AI to reduce repetitive writing work while retaining human responsibility for the final message.

Common mistakes to avoid when using AI email writers

AI-generated emails can save time, but careless use can create communication problems.

Sending generic emails to everyone: A message that does not address the recipient’s actual needs is unlikely to create meaningful engagement. Use relevant personalization rather than simply inserting a first name.

Trusting every generated statement: AI tools can produce inaccurate product descriptions, incorrect figures, or promises that a business cannot fulfill. Verify important details before sending.

Overusing promotional language: Excessive enthusiasm, exaggerated claims, and repeated calls to action can make emails sound artificial. Keep business communication natural.

Ignoring email deliverability: An AI writing tool does not automatically improve sender reputation or guarantee inbox placement. Businesses still need appropriate authentication, list hygiene, consent practices, and responsible sending volumes.

Automating sensitive replies without review: Complaints, refunds, legal matters, financial questions, and security incidents deserve careful human attention.

Measuring output instead of results: Generating more emails is not necessarily a sign of better performance. Evaluate response quality, conversions, customer satisfaction, and time saved.

Frequently asked questions

1. What is the best AI email writing tool for businesses in 2027?

There is no single best option for every business. ChatGPT is a flexible choice for general email drafting, Grammarly is useful for improving writing quality, Gemini suits eligible Gmail users, and Microsoft Copilot is a natural option for Outlook and Microsoft 365 organizations. Sales teams may prefer Lavender, while marketing teams may benefit from Jasper or campaign platforms such as GetResponse.

2. Can AI write professional business emails?

Yes. AI tools can create professional emails for sales inquiries, customer support, meeting requests, partnership proposals, payment reminders, and internal communication. The quality depends on the instructions and information provided. Employees should review the final draft before sending it.

3. Are there free AI email writing tools?

Some tools offer free access, limited usage, or trials. ChatGPT and Grammarly provide ways to start using AI writing assistance without immediately committing to a paid business subscription. Other providers offer limited free features or trial periods. Availability and usage limits can change, so check the official websites.

4. Can AI email writers integrate with Gmail and Outlook?

Yes. Some tools work directly within Gmail or Outlook, while others connect through browser extensions, separate applications, or third-party integrations. Gemini is integrated into eligible Google environments, and Microsoft Copilot provides AI assistance in supported Microsoft 365 workflows.

5. Can AI tools write cold emails for sales teams?

Yes. Tools such as Lavender, SmartWriter, and Copy.ai can help sales professionals prepare prospecting messages, follow-ups, and personalized outreach. However, sales teams should verify prospect information, avoid misleading personalization, and follow applicable email and privacy regulations.

6. Can AI email writing tools improve email marketing results?

They can help marketing teams develop better drafts, generate alternative subject lines, test different messages, and maintain a consistent brand voice. However, improved results are not guaranteed. Campaign performance also depends on audience relevance, offer quality, timing, deliverability, and the overall customer experience.

7. Will AI replace human email writers?

AI is likely to reduce the amount of repetitive email drafting and editing that employees perform. However, human judgment remains important for sensitive conversations, negotiations, customer relationships, complex decisions, and messages requiring accountability. Businesses will benefit most when employees use AI as an assistant rather than an unquestioned replacement for their judgment.

Conclusion

AI email writing tools are becoming useful components of modern business communication. They help organizations draft messages, improve tone, personalize outreach, prepare marketing campaigns, and reduce the time employees spend composing routine correspondence.

The 20 tools covered in this guide serve different purposes. ChatGPT and Grammarly are flexible choices for everyday writing, Gemini and Microsoft Copilot fit naturally into their respective productivity ecosystems, and Lavender is designed for sales email improvement. Jasper, Copy.ai, and Anyword support marketing and outreach content, while platforms such as Mailchimp, GetResponse, Omnisend, and MailerLite connect email creation with campaign management.

For a small business, starting with one tool that addresses its biggest communication challenge is often more practical than purchasing several subscriptions. Larger organizations may benefit from combining an AI writing assistant with their CRM and email marketing platform.

Ultimately, the goal is not to send more emails simply because AI makes writing faster. It is to communicate more clearly, respond more effectively, build stronger customer relationships, and turn business correspondence into measurable results.

Editorial note: This is a 2027-oriented buying guide based on tools and capabilities documented in 2026. Product availability, features, integrations, and subscription prices may change during 2027.