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Email reviews by real, verified users. Find unbiased ratings on user satisfaction, features, and price based on the most reviews available anywhere.

Best Email Software for Enterprise Businesses

    Products classified in the overall Email category are similar in many regards and help companies of all sizes solve their business problems. However, enterprise business features, pricing, setup, and installation differ from businesses of other sizes, which is why we match buyers to the right Enterprise Business Email to fit their needs. Compare product ratings based on reviews from enterprise users or connect with one of G2's buying advisors to find the right solutions within the Enterprise Business Email category.

    In addition to qualifying for inclusion in the Email Software category, to qualify for inclusion in the Enterprise Business Email Software category, a product must have at least 10 reviews left by a reviewer from an enterprise business.

    Top 10 Email Software for Enterprise Businesses

    • Outlook
    • Gmail
    • Front
    • Microsoft Exchange Online
    • Protonmail
    • Zoho Mail
    • Apple Mail
    • Zimbra
    • HCL Verse
    • BlueMail

    Compare Enterprise Business Email Software

    G2 takes pride in showing unbiased reviews on user satisfaction in our ratings and reports. We do not allow paid placements in any of our ratings, rankings, or reports. Learn about our scoring methodologies.
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    (1,094)4.3 out of 5

    Work efficiently with email, calendar, contacts, tasks, and more—together in one place. Office integration lets you share attachments right from OneDrive, access contacts, and view LinkedIn profiles.

    (1,625)4.7 out of 5
    Entry Level Price:$5 user/month

    Get custom email ( and more. 30GB of inbox storage Compatible with Microsoft Outlook and other email clients Ad-free, 24/7 support and more

    (602)4.6 out of 5
    Optimized for quick response
    Entry Level Price:$9 per user/month

    Front powers the heart of business — the meaningful connections between teams and customers that lead to lasting relationships. Bringing email and apps together in a collaborative customer communication platform, Front drives business impact by scaling the natural conversations that create customers for life. More than 6,000 businesses are using Front today to cultivate personalized customer relationships at scale and transform their work into impact. Learn more at

    (88)4.2 out of 5

    Microsoft Exchange Online provides hosted email, calendar and contacts on your PC, phone and web browser.

    (93)4.4 out of 5
    Entry Level Price:$30 per month

    ProtonMail is the world's largest encrypted email company, serving millions of users worldwide. We protect your communications against modern day cyber attacks.

    (351)4.4 out of 5
    Entry Level Price:0

    *Secure email hosting for your business* Get a custom domain email for your business. Create unique and professional email addresses for your employees with your company domain. Secure, ad-free email with 99.9% uptime guaranteed Zoho Mail guarantees you the most wanted availability with the utmost security and privacy to your account via EAR, TLS and TFA authentication. Seamless email migration Make your switch simple using our Migration tools. Our expert 24x7 technical

    (85)3.7 out of 5

    Mail makes it easy to manage all your email from a single, ad-free inbox. It features powerful search capabilities. Supports Gmail, MS Exchange, and others.

    (123)3.6 out of 5

    Zimbra, a Synacor product, is an email and collaboration platform that includes contacts, calendar, tasks, instant messaging, and file sharing, plus add-ons such as videoconferencing, document creation, and file storage. Zimbra powers hundreds of millions of mailboxes in 140+ countries and is offered through more than 500 BSPs and 2000 channel partners. Enterprises, governments, and service providers trust Zimbra. Zimbra can be deployed in the cloud, on-premises (private cloud), or as a hybrid

    (24)3.3 out of 5
    Entry Level Price:0.00 USD

    Discover how HCL Verse offers business email with analytics and collaboration to help you have a more productive workday Get more done Stop managing your email and start managing your work. HCL Verse brings forward the messages, meetings and actions you need to focus on. Right now. Cut through the clutter See your calendar at all times and access key contacts in a click. See if a colleague has something for you—or needs something from you. Review an attachment and reply. All without leaving yo

    (40)4.4 out of 5

    BlueMail is an email management app for Android, iOS, and Windows.

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    Check out the G2 Grid® for the top Email Software products. G2 scores products and sellers based on reviews gathered from our user community, as well as data aggregated from online sources and social networks. Together, these scores are mapped on our proprietary G2 Grid®, which you can use to compare products, streamline the buying process, and quickly identify the best products based on the experiences of your peers.
    High Performers
    Apple Mail
    Microsoft Exchange Online
    Zoho Mail
    HCL Verse
    Market Presence

    Learn More About Email Software

    What is Email Software?

    Email is the main gateway for internal and external communication within a company. As such, it’s crucial to implement a software that is intuitive, organized, secure, and efficient.

    Email software can achieve a variety of other tasks for your company, such as deploying marketing campaigns, engaging consumers, setting task reminders, chatting with other employees, keeping a schedule for meetings, and more. Considerations for what email software to use should depend on your company size, business industry, security requirements, storage space, and pricing.

    Key Benefits of Email Software:

    • Send and receive important business messages between employees
    • Improve outreach with email marketing campaigns
    • Keep a permanent record of all messages that are sent and received
    • Send and receive important business messages from anywhere at any time

    Why Use Email Software?

    There are infinite reasons to implement email software at your company, but the most important one is communication. Whether this means conveying an important message to coworkers or delivering your brand message to prospective customers, the main function is to relay a message.

    Email can also help with customer engagement. Customizable email platforms allow companies to illustrate their brand and communicate their company’s mission statement. When a client or a prospective lead receives an email from your company, you can deliver your marketing message with taglines, logos, and customizable email signatures. This helps keep your brand in the spotlight.

    Email software is also the vehicle for all of your email marketing campaigns, which can help generate leads and drive more business to your company. Email marketing tactics such as customer targeting and calls to action can help gain more subscribers and translate to a higher ROI.

    Who Uses Email Software?

    All employees in your company can benefit from email software, since it’s the main form of communication for important documents and messages. However, some employees will be sending out more emails than others. Those employees may work in departments such as:


    Email has the built-in capability of being sent in bulk, which makes it the perfect software to use for mass marketing campaigns. Marketing teams often gather leads from the company’s CRM and send out marketing campaigns. This is a great way to elicit a meaningful call to action for prospective buyers. Oftentimes, email marketing is also integrated with AI software to automate email marketing on a scheduled basis. This benefits the marketing team by making the process less tedious and more efficient.

    Customer Service

    Customer service and success teams constantly answer inquiries via email. A business’ email software should include auto-generated responses these teams can use to alert customers that their inquiry will be answered promptly. Most email software will vary with their ability to customize auto-generated responses, so make sure to evaluate this before choosing an email software.


    HR teams use email to inform employees of any updates related to the office. This can include calendar updates, payroll changes, and much more. HR teams need a streamlined email solution so they can easily prioritize their schedules.

    Kinds of Email Software

    Email Client

    An email client is a software platform that allows you to access your email without logging onto the web. Email client software works through POP3 and IMAP addressing. This means that you can access your email through your desktop programs. Email clients offer the benefit of extra security with more encryption to protect your emails. The main drawback here is that users will find it difficult to access their email from other computers, since an email client is usually installed on the user’s desktop.


    Webmail is a software platform that allows users to access emails through a web browser. The main benefit of webmail is mobile access. If you are travelling somewhere and forget to bring your laptop, you can easily access your email on any other computer as long as you have internet access. Furthermore, most webmail software has built-in suites that feature document creation, video conferencing, and other tools that can be accessed via the internet.

    Email Features

    Storage Space

    Most email software offers a free amount of storage space just by signing up for the software. This can typically range between 15 and 50 GB. Depending on your budget and company size, email software will offer your company more or less storage space for varying prices. The main aspect to consider here is the amount of email you receive on a daily basis and how that quantity of email can overwhelm your server over time. If your email software only offers a limited amount of free space, this can easily burden the server and cause it to slow down.

    Address Books

    Having a list of all your client contacts is a great way for your company to stay organized. Client information and email lists can easily be kept within an email solution’s built-in address book.

    Email Filters

    A key feature of most email platforms is the ability to filter your inbox so you can easily find the most relevant messages. The main benefit for businesses is to block any potential threats from entering the company’s server as well as filter out any unwanted messages.

    App-Based Integration Tools

    Many forms of email software provide productivity and collaboration suites that are beneficial additions to signing up for their software. Lots of these features can help increase office efficiency with tools such as video conferencing, spreadsheets, and document creation. Depending on your company’s size, this can be a great way to centralize all of your office needs in one place.

    File Attachment

    Email software allows users to attach files when sending messages. Files can range from simple Word documents to detailed presentations and videos. The major benefit to businesses is the removal of the need for a USB to transport data. Instead, anyone can send large files via the internet to accelerate efficiency.

    Email Automation

    An example of email automation is when a new user receives a welcome email when they sign up, which may indicate instructions on how to start using the site as well as any new features that the company has been working on. This is a great benefit for businesses, as they no longer have to manually send out emails to every new user. It also helps grow your company’s subscriber list, which will help improve sales.


    An Internet Message Access Protocol (IMAP) is responsible for the mobile access that virtually every email solution provides. This feature is vital to organizations with a remote workforce or employees who travel frequently.

    Potential Issues with Email Software

    Businesses looking for email software should be mindful of these potential issues:


    Perhaps the biggest issue with using email software is the potential for receiving unsolicited emails, also known as spam. Spam email can range from unwanted commercial emails to malicious emails that try to spread viruses to your computer. This issue can be harmful to the security of your messages.

    Email Attachment Size

    It is sometimes critical to send emails with large attachments. Some email software does not allow for emails to send attachments over 25–30 MB, while other solutions allow emails to be up to 300 MB. If your company sends emails that use lots of space, you may want to consider an email software that allows for larger limits on attachments.


    The biggest issue with sending mail electronically is the potential for malware. This invasive and threatening software, also referred to as ransomware, is a type of virus that can only be eradicated through a monetary payment. Companies should ensure they have an active security team in order to stay vigilant, or they need to install proper precautions.


    Email deliverability is the number of emails you send that actually reach an inbox. This is important for business initiatives (like marketing campaigns) that need to reach a long list of prospective buyers. Reputable email software will be more likely to send emails through trusted ISPs. This will ensure emails are not bouncing and have a high deliverability rate.