Warmy Blog

Boost Your Email Open Rates: 10 Practical Strategies

Talk with a deliverability expert!

No need to flee, it’s totally free


    With an industry average open rate of about 20%, your email fights against always shorter attention spans in addition to competing with others for attention. Within the field of digital marketing, email open rates are more than simply numbers; they are important markers of relevancy, involvement, and eventually the success of your efforts.

    We’ll go over doable tactics in this post to increase these rates, including employing cutting-edge apps like Warmy.io and figuring out when to push “send.” These tips are meant to improve your email game whether you’re trying to change your strategy or just polish your approach.

    What is an email open rate?

    In email marketing, an email open rate is an important statistic that counts how many receivers of a particular email open it out of all those sent overall. More precisely, to acquire a percentage, divide the number of opened emails by the number of delivered emails (apart from those that bounced) and multiply the result by 100. This statistic gives you clear information about how well your email marketing is drawing in and keeping your readers interested.

    For several reasons, email marketing success depends on tracking email open rates. Being the first things a receiver sees before choosing to open an email, it acts as a first gauge of how interesting your subject line and sender name are. Higher open rates typically indicate well-targeted email lists, compelling subject lines, and relevant communications for the receivers. On the other hand, a low open rate may suggest problems with email deliverability, a weak subject line, or a lack of audience relevance and point to the necessity of changing the approach.

    Furthermore, by A/B testing several components, improving targeting techniques, and improving content quality to increase overall engagement, marketers may optimize their email campaigns by knowing open rates. It is therefore a basic statistic that has the power to greatly impact the strategic choices made in email marketing campaigns, improving outcomes and improving communications with your audience.

    Historical trends in email open rates (2015-2023)

    Over the years, email open rates have varied as a result of changing customer behavior, technical advancements, and email marketing strategies. This is an annual analysis showing the average open rates from 2015 to 2023 along with a description of the trends that have affected these adjustments.

    ✅ 2015–2017: Better targeting and personalization methods were a major factor in the steady rise in email open rates throughout this time. Better understanding of their audiences by marketers through the use of increasingly complex data analytics resulted in more interesting and relevant content. About 21-22% was the average open rate.

     ✅2018: The open rates clearly dropped to around 20%. Email saturation—a result of users receiving more emails than ever—may be to blame for this decline.

    ✅ 2019 saw a recovery, with open rates rising to about 21.5% once more. expanding use of mobile-optimized email designs, which addressed the expanding number of people accessing emails on mobile devices, and innovations in segmentation and customization also had a big impact.

    ✅ 2020–2021: The COVID-19 epidemic significantly affected digital communication methods; open rates peaked at about 22–23%. This was brought on by individuals depending increasingly on digital means of communication during lockdowns and social isolation policies. Profiting from this tendency, marketers improved their email outreach tactics.

    ✅ 2022: Open rates slightly fell to roughly 21%, probably as a result of modifications as the world gradually adjusted to new standards following the pandemic. The shifting expectations and actions of consumers required marketers to reevaluate their tactics.

    ✅ 2023: The open rates settled at about 20.5%. With improved integration of AI and machine learning technology, email marketing techniques have matured and are now offering even more sophisticated personalization and timing optimization.

    Discussion on Trends and Changes

    • Enhanced Personalization and Segmentation. Marketers may now better divide up audiences and customize communications according to each person’s actions, tastes, and previous contacts.
    • Rising of Mobile Optimization. To enhance user experience and engagement, emails have been made mobile-friendly with succinct content and simple-to-click links.
    • Integration of AI and Automation. Despite obstacles, strong open rates are maintained in part by the growing use of AI and automation to optimize send times and customize email content at scale.
    • Privacy and Regulation. How data is gathered and utilized has changed as a result of more open, consent-driven marketing tactics brought about by changes in laws such as GDPR.
    • Consumer Expectations. As they anticipate more value-driven material that honors their time and preferences, consumers are becoming more picky about the emails they open.

    Top 10 strategies to increase email deliverability

    1. Use an Email Warm-up Tool

    email warm up

    Anyone trying to build or keep a respectable sender reputation needs to warm up their emails. Sending emails from a fresh email address or domain for the first time leaves no sending history. Your emails may end up in spam folders or, worse, not be delivered at all if internet service providers (ISPs) consider emails from this new address to be possible spam. Over time, ISPs can identify and trust a new email address by progressively sending more emails from it.

    Building your sender’s reputation is essential to increasing email deliverability, and warming up an email address helps with that. A solid reputation guarantees that your emails go to the inboxes of the recipients rather than the spam bin, which raises the possibility that they will be read and clicked. Furthermore reducing the possibility of getting banned by email providers is this procedure.

    Recommendation of Tools Like Warmy.io

    Tools like Warmy.io are designed to automate and simplify the email warm-up process. Warmy.io gradually increases the number of emails sent from your account to a network of email addresses that interact with these emails. Such interactions include opening emails, marking them as important, and replying to them. These positive engagements boost your sender score, which is crucial for achieving high deliverability rates. Additionally, Warmy.io provides analytics and feedback on your sending practices, helping you optimize your email strategies for even better deliverability. Get your 7-days free trial without credit card

    2. Optimize the Email Subject Line

    Increased open rates need strong email subject lines. To make sure they appear on mobile displays, keep your subject lines short—ideally under 50 characters. To boost relevancy, provide customization, such using the recipient’s name or specifics about their hobbies. Phrases like “limited time offer” provide a sense of scarcity or urgency, which promotes quick response.

    Use interesting questions to spark interest, and actionable language using verbs like “Discover” or “Get” to create enthusiasm. To emphasize lists or fast reads, use numbers; avoid using terms like “Free” or “Guaranteed” that could set off spam filters. To enable ongoing improvement and increased email interaction, always test several subject lines to see which ones your audience responds to the most.

    Want to know more? Read also – Best Practices for Email Subject Lines and 70 Examples

    3. Maintain a Clean Mailing List

    Retaining good email deliverability and engagement rates requires frequent cleaning and upgrading of your email list. Low open and high bounce rates from an old or dirty list might harm your sender reputation with email service providers.

    Either updating or deleting faulty email addresses and removing inactive or unresponsive subscribers are part of cleaning your email list. This procedure lowers the possibility of your emails being flagged as spam and helps make sure that recipients are actually interested in receiving them.

    Furthermore, more precise evaluation of the success of your email campaign is made possible by a clean mailing list. Your email effectiveness is more apparent when your list is made up only of active subscribers, which allows you to make more strategic and focused marketing choices.

    Putting in place routine clean-ups, say, after each big campaign or at least twice a year, guarantees the most potential efficiency from your marketing efforts. This proactive strategy can guarantee better inbox placement and improved conversion rates, therefore improving the general health of your email marketing efforts.

    4. Perform Email Deliverability Tests

    email spam test

    Ensuring that your email marketing initiatives get into the inboxes of their intended recipients depends critically on email deliverability testing. Frequent deliverability checks assist find possible obstacles that could stop your emails from reaching their recipients, like problems with your email server configuration, email content that triggers spam filters, or reputation of your IP address.

    Tests for deliverability let you determine how well your infrastructure and email sending procedures are working. Through the identification and resolution of problems before they affect the efficacy of your campaigns, these tests protect your sender reputation and raise the general success of your email marketing initiatives. High deliverability rates raise the possibility that people will see and respond to your emails, which raises interaction and conversion rates in the end.

    Warmy.io offers a free email deliverability test tool that is easy to use and provides valuable insights into how your emails are performing. Here’s how you can use it:

    5. Segment Your Audience

    Organizing your email list into segments enables more focused and successful email marketing. Divide your audience according to particular factors, including behavior or preferences, and you can provide very relevant material that boosts interaction. Because each communication feels individualized, this customized strategy increases open and click-through rates as well as client retention.

    Segmentation also makes it easier to divide up marketing budgets by concentrating efforts on the most responding groups to get the most benefits. It also makes it possible to test precisely within of segments, which helps you to improve tactics for improved marketing results overall. In the end, segmentation increases subscriber happiness and loyalty, guaranteeing the intended effect of your marketing communications.

    Read also – Tools for segmenting the customer base

    6. Ensure Email Authentication

    SPF generator

    Establishing and preserving the reliability of your email communications depends critically on mail authentication. Through the prevention of email spoofing and phishing assaults, it safeguards your email reputation and helps to confirm that emails sent from your domain are authentic.

    SPF (Sender Policy Framework). SPF confirms that emails sent from a domain are allowed by the domain administration, so helping to validate an email. Listing every IP address that may send emails on behalf of the domain does this.

    👉 Secure your email delivery with SPF. Create your SPF record easily using Warmy.io’s Free SPF Generator.

    Domain-based Message Authentication, Reporting and Conformance, or DMARC. Building on the SPF and DKIM standards, DMARC offers further protection by dictating how an email recipient should handle emails that fail the SPF or DKIM checks. Additionally, and this is important for better managing your email delivery problems, it reports back to the sender about messages that pass or fail DMARC evaluation.

    👉 Enhance your email security with DKIM. Generate your DKIM signature with Free DMARC Record Generator


    DKIM (DomainKeys Identified Mail). DKIM adds a digital signature to every email, which helps the receiving email server confirm that the email was sent from an authorized sender and that the email content has not been altered in transit. This verification is crucial for building trust with your recipients.

    Your email communications become far more secure and reliable when you use SPF, DKIM, and DMARC. These technologies maintain the integrity of your brand by preventing email spoofing from using your domain and by helping to increase email delivery. Continual updates and confirmations of your email authentication records guarantee that your email procedures stay compliant with the highest security standards.

    7. Use Engaging Preheader Text

    Following the subject line of your email comes a vital but sometimes disregarded element called preheader text. As a kind of backup pitch, it invites recipients to open the email by giving them a preview of its contents. Good preheader content either expands on the subject line’s message or adds interesting details to generate curiosity. Keep your preheader brief—ideally under 100 characters—and think about adding a subtly encouraging action, such as “Learn more inside.” Your email open rates can be greatly increased by routinely testing various preheader messages to see what your audience responds to the most.

    8. Time Your Emails Appropriately

    Because it affects open rates so much, timing is everything in email marketing. Emails sent at times when recipients are most likely to check their inboxes have a far higher opening rate. For best effects, take into account recipients’ time zones, examine your audience’s behavior to pinpoint times of greatest interaction, and keep up with trends unique to your sector. Refinement of your approach and guaranteeing that your emails reach your audience at the most effective times need frequent A/B testing of various sending times and days. You may raise interaction and raise campaign performance generally by properly arranging your emails.

    9. Check for IP and Domain Blacklisting

    domain blacklist

    Sending emails to your audience’s inboxes can be seriously hampered by being blacklisted. The health and efficacy of your email campaigns depend on routine checks for blacklisting.

    Try the Warmy email deliverability test to see whether your domain has been blacklisted. You will receive a thorough report and your domain will be scanned against all of the main blacklists by this program. Through the use of this test, you may rapidly identify any problems compromising the deliverability of your emails and move promptly to fix them.

    10. Regularly Update and Refresh Content

    Retaining subscriber attention and increasing interaction need regularity and interesting email content. Frequent updates guarantee that your communications are current and relevant, which keeps subscribers interested and engaged. Refreshing your content can also help to build brand loyalty by establishing your company as an industry leader. To maintain the material engaging and dynamic, include a range of themes and formats, such as infographics, films, and interactive components. To further improve your approach and guarantee that your emails always satisfy the demands and preferences of your readers, leverage their comments. By always coming up with fresh email content, you increase readership and build enduring relationships.

    Best time to send email campaigns

    Reaching high open rates and interaction with email marketing requires knowing when is the best to send them. Sending emails mid-week is often advised by industry research, especially on Tuesday, Wednesday, or Thursday mornings at 10 AM, when many people start their workday. These recommendations, meantime, might not work for every audience because different people behave differently.

    Analysing your previous email performance will help you determine the optimal time for your particular audience. See when your emails are most read. Send the same email to several audience groups at different times and analyze the results to see which time frame encourages greater interaction.

    If you know that your audience is spread over several time zones, change the times you send emails to make sure they arrive at the best local hours. Because audience behaviors might change, regularly reassess your send times. Use email marketing platforms that provide send-time optimization based on past interaction statistics. With this method, you can keep honing your plan and making sure your emails work as hard as possible, which will increase campaign outcomes and encourage ongoing interaction.

    Extra thoughts and advice

    Two important aspects that should not be disregarded while optimizing your email marketing plan are mobile optimization and A/B testing. Ensuring that your campaigns satisfy the changing expectations of your audience and increasing their efficacy depend on these components.

    Mobile Optimization

    Most emails are opened on mobile devices in the digital era of today. With this change, your emails must be mobile-friendly to be readable and attractive on smaller displays. This includes keeping email content brief, making sure links and call-to-action buttons are easy to click on a touch screen, and using adaptable email design templates that adjust to the size of the device screen. Mobile optimization raises the possibility of interaction and conversion from your emails in addition to enhancing the user experience.

    Value of A/B Testing

    Email marketing requires A/B testing since it lets you compare several email variants to determine which one works better. Tests of your subject lines, email content, pictures, buttons for action, and even send times could be part of this. Through methodical testing of these components, you can learn a great deal about what your audience responds to most. A/B testing helps you iteratively improve your email strategy so that your communications achieve your objectives and produce better outcomes.


    We’ve looked into a range of tactics in this post that are all meant to increase your email open rates and improve the efficacy of your email marketing. 

    Putting these tactics into practice will make sure your emails are timely, interesting, and relevant in addition to raising the chance that they will be opened. When you start using these techniques, never forget that adaptability and testing are essential. Your open rates will steadily rise if you routinely adjust your strategy in response to performance indicators and user comments. We urge you to start using these advice in your email marketing campaigns right now and see how much better your campaign will perform.

    Getting ready to up your email marketing game? Make sure your basis is strong with dependable email delivery and authentication first. See Warmy.io now to get a collection of tools made to maximize your email marketing. Warmy.io offers anything you require to improve your email strategy, from free SPF and DMARC record generators to thorough email deliverability tests. Enrol right now to begin noticing increases in your email performance generally and in your open rates. Warmy.io makes every email count so don’t let another one go unread.


    What is an email open rate?

    n email open rate measures the percentage of recipients who open an email compared to the total number of emails sent (excluding those that bounce). It's a key metric in assessing the effectiveness of email marketing campaigns.

    How can I improve my email open rates?

    Work on writing interesting subject lines, making sure your email list is organized and segmented, making sure your emails are mobile-friendly, and scheduling your emails well to increase your email open rates. By use of sophisticated authentication and deliverability testing, using services such as Warmy.io can further improve your email deliverability and open rates.

    Why is it important to segment your email list?

    Depending on their particular interests and actions, segmenting your email list enables you to send more relevant and focused messages to various groups. The engagement and open rates can be much increased by this customisation.

    How does email authentication affect my email open rates?

    By assisting to confirm that your emails are really from you, email authentication services like SPF and DMARC lower the chance that they will be classified as spam. Employing them with Warmy.io's solutions will increase your open and deliverability rates.

    What is the best time to send emails?

    Your industry and readership will determine when is the best to send emails. Though you should experiment with several times to see what suits your particular audience, mid-week mornings are usually successful.

    What tools can I use to check if I’m blacklisted and why is this important?

    Having your email delivered significantly impacted by a blacklist. Services to determine if your domain is blacklisted and to help fix any problems to improve email performance are provided by tools like Warmy.io.

    Scroll to Top