6 AI Tools for Marketers to Supercharge Your Emails

The use of artificial intelligence (AI) for emails has taken off in the last few years, with ChatGPT launching in 2022 and Google Gemini in 2023. 57% of marketers use AI in their email campaigns, which signals a growing demand for AI tools. 

In this toolkit, we look at the six essential AI tools for marketers in 2025. From ensuring 100% error-free copy to automating email management, we’ll cover all the bases. 

AI Tool #1: Grammarly AI (or a similar AI copy checker)

Grammarly is among the most popular AI tools for marketers and communication professionals, with over 40 million users worldwide. The company uses artificial intelligence to check the grammar, tone, and engagement levels of your writing. 

In 2023, it launched Gen AI features to make contextualized and brand-specific recommendations. 

You can use Grammarly as a standalone app or install its browser and desktop extensions. This allows the AI tool to make in-line writing suggestions no matter where you’re typing, an email client, or a notes app. A pop-up window will appear with advice on how to rewrite an email for more clarity and engagement. 

This AI tool for marketers is available for free, but you’ll be limited to 100 AI generations. The Pro version for $12/month/user offers more advanced rewrites and tone adjustments. Alternatives to Grammarly include Quillbot, Wordvise, and Grammarcheck.ai.

AI Tool #2: AI Email Generators

AI tools don’t just check your grammar for you. They can draft end-to-end emails, saving you the trouble of coming up with the perfect cold outreach message—or writing the same email for the hundredth time. There are a number of both free and paid AI email generators out there, such as ChatGPT (free), Google Gemini (included with Workspace), and Gmelius ($10/month/user onwards). 

AI email generators will analyze the user input (called a prompt) and generate an email accordingly. You could ask it to write an email to your team members scheduling a town hall meeting. Or, you could use it for outbound campaigns to write emails that capture the reader’s attention. The possibilities are endless. 

The only challenge is, most AI email generators are trained on large datasets of business communication, which makes the output generic. To address this issue, Gmelius is building a highly personalized AI email generator trained on communication best practices.  

Instead of reactively relying on a prompt to come up with an output, Gmelius AI will autonomously detect when it needs to reply. It‘ll then draft responses based on historical data, like similar conversations, your tone, and our email mining technology.

Sign up for Gmelius to be among the first users to implement it. 

AI Tool #3: Artificial Intelligence Lead Generation

These AI tools allow marketers to level up their cold outreach game. Tools like Leadzen.ai, Customers.ai, CoPilot AI, and others help automate your messaging pipeline so that you never miss a lead. You can even use tools like LinkedCRM.ai to extract lead data from social media platforms. 

The world of AI lead generation tools is large and diverse, with platforms for nearly every task—from lead identification based on web traffic (e.g., Jasper) to conversion rate optimization (CRO) through email hooks (e.g., useArtemis). 

We recommend conducting detailed research and piloting 2-3 AI tools that meet your lead generation requirements. If you’re a Google Workspace user, you can also integrate Gmelius with your lead data to set up automated email workflows. 

Learn more in our ultimate guide to AI for emails.

AI Tool #4: Email Subject Line Generator

This AI tool for marketers is easy to access and use since it requires little to no investment. For instance, Gmail will typically auto-recommend the subject using its “Smart Compose” feature, especially if it’s a repetitive or simple email that doesn’t need a lot of creativity. 

For more advanced requests, you can check out dedicated email subject line generators like the ones by Copy.ai, Mailmodo, and HubSpot. You can also visit the Chrome Web Store and search for “subject line generator” extensions. This will integrate the AI tool with your email client so you don’t have to switch apps or copy-paste the subject from a different app like ChatGPT. 

AI Tool #5: Paraphrasing Generator

This AI tool for marketers is great when you’re looking to repurpose content but need small tweaks. For instance, you might want to condense a product brochure and paraphrase it into an engaging email to send a querying prospect. 

Quillbot is among the most popular AI tools for this purpose. It offers a free app, although with limits on the extent to which the text will be changed. Users can choose between different tones like natural, formal, academic, or creative, and even expand or shrink the text. Paid plans start at $4.17/month/user. 

A few other AI tools like Copy.ai, Copymatic, and even Ahrefs offer paraphrasing generators, but they aren’t specialized platforms for this purpose. You could also copy-paste emails into ChatGPT and ask it to rewrite it, or select the text in a Google Doc and ask Gemini to paraphrase it for you. 

AI Tool #6: AI-Automated Email Management

Another useful AI tool for marketers is AI-enabled email automation. Modern technology allows users to automatically perform a surprisingly wide variety of email tasks. 

You can auto-delete messages containing a certain phrase, escalate emails from a certain customer, auto-reply to queries if it’s delayed beyond SLAs, and much more. The full power of email automation is available to you using third-party platforms like Gmelius. 

Artificial intelligence makes the automation process smoother. Users don’t have to configure automations or set up triggers and actions themselves. They can ask the AI agent, which will intuitively understand and create the automation rule. 

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This type of AI tool for marketers reduces dependence on IT and empowers you to set up technically advanced workflows. 

In Conclusion: Why Gmelius

The right third-party service can supercharge Gmail and help you unleash its full potential. Thanks to artificial intelligence, it is possible to accomplish more with less, as long as you use the right tool. 

AI email generators, grammar checkers, lead generators, subject line writers, paraphrasing tools, and automation platforms are essential components of a modern marketer’s toolkit. 

Gmelius is designed to improve email outcomes through intelligent automation, with little to no manual setup. Users can interact with the AI agent to create custom automation rules. 

Using a shared inbox, shared Gmail labels, collaborative Gmail, and our current and upcoming AI features, transform how you execute your email marketing strategy. 

Sign up for a free trial.