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Email Automation to Improve Your Business: Top 10 Best AI Email Responders

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The average employee in the US and UK spends almost eleven hours of their week drafting emails. In other words, a worker in a typical 9-to-5 job loses over a quarter of their time making sure messages get sent. 

For companies that are eagerly searching for ways to get workers to spend less time on emails and more on actually selling, email automation may be just what the doctor (or CEO) ordered. 

Here’s a closer look at the 10 best AI email responders capable of boosting your team’s performance.

What is email response automation?

Automated email responses leverage AI to quickly write up and send answers to incoming messages. This helps AI free up time for teams so they can work on other projects while bolstering overall efficiency.

Another plus to email automation is that it enables teams to rev up productivity without putting in extra hours.

Before generative AI, automated emails typically ranged anywhere from simple auto-replies and welcome emails to templated nurturing sequences delivered at pre-programmed intervals.

But since OpenAI’s public launch of ChatGPT and GPT-4, AI solutions like AiSDR are capable of sustaining a meaningful conversation over email without needing extra input from a real person. This has led to a dramatic evolution in email automation.

How email response automation improves your business

The right email response automation tool can lift your business to new heights. Here are some of the ways AI responders can support your company:

  • Efficiency – AI responders greatly reduce the time your teams spend on managing email replies. Streamlining email communication affords them more bandwidth for strategic projects and other core business activities. 
  • Improved response times – Improving response times and keeping them under 10 minutes comes naturally for AI-powered email responders, which don’t need to sleep or take coffee breaks. Plus, they can process and respond to incoming emails at speeds humans can’t match. 
  • Scalability Designed to handle large amounts of data, AI email responders can tackle a large influx of messages without cutting corners, making typos, or compromising the quality of their responses.
  • Availability AI has evolved to the point where you can find an email responder intelligent enough to address your need while also staying within your budget.
  • Competitive advantage Prompt and personalized messages to inquiries satisfy customers and help you stand out among competitors. 
  • Data insights – Email interactions offer a treasure trove of data, and AI tools can use it to identify trends, understand customer sentiment, and determine areas of improvement. 

Not all AI responders are created equal. To get the most out of your software investment, you need to select the right AI-powered email solutions. 

Top 10 AI email responders

A wide range of options exist regarding email responders, from AI tools specializing in growing B2B sales pipelines to solutions that research B2C e-commerce customers. There’s even a selection of writing assistants that make your regular email platform much smarter. 

When selecting your software, you’ll have to consider your specific business needs and goals first before looking into the best AIs available and their unique features. With your goals in mind, here are the top 10 AI email responders.


Designed to improve the performance of sales development representatives (SDRs), AiSDR fully automates email campaigns. It crafts personalized messages based on LinkedIn activity and buyer intent while ensuring go to the right prospects. 

  • AI email assistance – Simply tell AiSDR what you want to achieve, and it will create an email campaign for you in minutes. It will even send the emails out. You can also teach the tool how to handle common objections and convince prospects to book a meeting with your sales rep.
  • Lead nurturing – This AI email responder can generate personalized emails that nurture leads and guide them along their customer journey.
  • Hands-free booking – You can set AiSDR to book meetings with warm leads on autopilot to get the most out of your sales pipeline.
  • Customer segmentation – AiSDR’s lead discovery engine allows you to quickly sort through 700M+ leads across 35M+ companies. You can segment them with the help of filters for industry, company size, job type, and more.

AiSDR pricing: $750 a month per 1,000 emails. A free demo is available.  


Powered by GPT-4 and ChatGPT, Hyperwrite streamlines email correspondence by automatically generating well-crafted responses to emails. 

  • Email responder – Hyperwrite automatically writes a well-structured response to an email, maintaining a professional communication style. It can handle client queries, meeting confirmations, and requests for collaboration with colleagues. 
  • Multilingual assistant – Hyperwrite generates responses in multiple languages based on the language of the email it replies to. 
  • Magic editor – Edits email messages to enhance their clarity, tone, and style.

Hyperwrite pricing: Plans start at $19.99 per month. A free plan with limited features is available.  


Flowrite generates emails with the appropriate tone, ranging from casual to formal. It functions as a Chrome extension and can be linked to Gmail, Outlook, LinkedIn, and other platforms.

  • Seamless integration – You can integrate Flowrite into an email platform of your choice. For example, you can access all its features from the comforts of your Gmail account.
  • Personalized reply – You only need to leave brief instructions, and Flowrite can instantly craft reply suggestions. 
  • Templates – Use templates to quickly write repetitive emails and take control over the format of your responses.

Flowrite pricing: Plans start at $4 monthly for 200 messages per year. Every plan offers a 14-day free trial.

Email Tree

Email Tree leverages human-assisted automation to draft email responses to complex questions, improve user engagement, and boost response time.  

  • Smart reply – Email Tree uses AI technology to generate the most appropriate responses, allowing you to control the level of human intervention. It can save 35% to 80% of your time writing emails.
  • Ready-to-send blocks – An intuitive drag-and-drop tool lets you craft personalized emails with just a few clicks. 
  • Semi-automatic reply – This tool generates ready-to-send responses to common questions.

Email Tree pricing: Plans start at $120 per month for 300 conversations.


Ellie is an AI email assistant that analyzes your writing style and adapts its tone of voice accordingly. It offers Chrome and Firefox browser extensions, allowing you to work from your existing or preferred inbox. 

  • Roles – Ellie can take on various roles to match a variety of contexts. 
  • Extra context – Ensure you send out appropriate responses by adding more context. 
  • Multilingual – Ellie uses the same language as the email it’s replying to.

Ellie pricing: Plans start at $19 per month for up to 25 messages per day. A free plan with basic features is available. 


Remail is a ChatGPT browser extension that lets you draft emails faster while keeping your preferred writing tone.

  • One-click responses – Click a single button to generate a positive or negative response.
  • Custom responses – Type in a short brief to generate a fully composed email. 
  • Tone – Set the tone of your emails to any of the ten pre-defined options, including formal, informal, and excited.

Remail pricing: Plans start at $4.99 per month for 100 emails. A free plan with limited features is available. 


Superreply is a Chrome extension that allows you to reply to emails with just one click. It integrates easily with Gmail and Outlook.

  • Smart responses – A single click brings you several email versions, ensuring you always have the right response.
  • Customizable tone – Use a range of writing tones, from casual and lighthearted to professional and motivational. 
  • Multi-language support – Use Superreply to compose emails in Spanish, German, or Portuguese. 

Superreply pricing: Superreply is free to download and use. 

Nanonets AI Autoresponder

Nanonenets offers an easy-to-use autoresponder that reads and analyzes emails and automatically generates a response following your instructions. 

  • Autoresponder – The Nanonets autoresponder analyzes the content of incoming emails and crafts appropriate responses.
  • Email management – Nanonets classifies incoming emails and optimizes email communication management by following pre-defined rules. 

Nanonets pricing: Free to download and use. 


Moosend designs emails that increase open rates. It does so by crafting catchy subject lines and personalizing email content. 

  • Audience discovery – The tool analyzes customer behaviors, such as product views and add-to-cart activities, to create impactful email campaigns. 
  • Email generation – It creates personalized emails and strong subject lines to increase user engagement and employee productivity. 

Moosend pricing: Plans start at $9 per month for unlimited emails. A 30-day free trial is available. 


Mailbutler is a Chrome extension that makes your Outlook, Gmail, or Apple Mail inbox much smarter. It allows you to summarize and respond to emails with just a few clicks.

  • Smart compose – Quickly writes drafts, which you can edit as needed.
  • Smart assistant – Summarizes and responds to emails with flawless spelling and grammar. 

Mailbutler pricing: Plans start at $4.95 per user per month. A 14-day free trial is available.

Now that you know your options and what they can do, you should have a better idea of the best choice for your business. 

Best practices for implementing AI email responders

Before you hone in on a specific email responder, you should know how to make the most out of an AI tool. 

Set clear goals and objectives for your AI persona

With so many AI email responders available, how do you pick the best match for your business?

You need to start by determining your goals. And the clearer they are, the better.

For example, let’s imagine you want to step away from standardized templates and sequences. You’ll have to create a shortlist of AIs that use generative AI for drafting sales and marketing content.

Once you have a shortlist in hand, your next step will be to evaluate the quality of email copy, whether it’s by booking a demo or signing up for a free trial.

Integrate the email responder into your tech stack

It’s a good idea to settle on an email responder that fits nicely into your tech stack. 

If you plan on using an AI solution to automate sales and marketing outreach, you’ll want to select an AI responder that integrates with your CRM. This could be Salesforce, HubSpot, or another standard CRM.

Bonus points if you can find an AI responder that can even consolidate and replace multiple softwares, allowing you to reduce your spend.

Analyze performance data 

You’ll want to closely track the performance of your AI sales solution. Ideally, it will provide a centralized dashboard that makes it easy for you to check up on key sales metrics, such as click-through rates, response rates, and the number of meetings booked. 

Regularly update your AI persona with new data and best practices

AIs constantly learn from user interactions and performance data. A good AI solution will allow you to provide feedback about what you liked and disliked in messages, as well as provide you an easy opportunity to adjust instructions so that the AI sales persona will stay up to date. 

Boost your company’s efficiency with AiSDR

Using your HubSpot data and a lead’s recent LinkedIn activity, AiSDR will speak with leads and have meaningful conversations through a series of personalized emails and text messages. Not only does AiSDR respond to incoming replies in less than 10 minutes, AiSDR even automates follow-ups to ensure leads don’t slip through the cracks in your sales funnel.

On top of that, AiSDR helps you fuel campaigns with unlimited leads, automated inbox warm-up, and intent-based lead qualification.

Book a demo to see how AiSDR will automate your emails.

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