How To Warm-Up Email Domain: Don’t Let Your Emails End Up in Spam

In the competitive world of email marketing, ensuring your messages reach their intended recipients is crucial for success.

But did you know that new or long-inactive business email accounts can benefit from an “email warm-up” process?

This blog will explore what a warm-up email domain is, why it is so important, and how to warm-up email domain to maximize the potential of your cold email campaigns.

Let’s boost your deliverability rates!

Meaning of Warm-Up Email Domain

Email warm-up is a strategic process to build a solid reputation for your new email account, domain, and IP address with inbox providers. This involves gradually increasing the number of emails sent over time to establish credibility and trustworthiness among email service providers (ESPs).

When it comes to email warm-up, it is essential to interact with email recipients positively. This may involve personalizing your messages, responding promptly to replies, and fostering genuine connections that demonstrate good email etiquette.

For instance, when reaching out to potential clients via a cold email campaign, ensure you provide valuable information tailored specifically to their needs, so they recognize the value in opening and engaging with your emails.

Why Are Warm-Up Emails Crucial?

Email warm-up is crucial because it helps to avoid being detected as spam, establish trust with email providers, and improve email deliverability rates.

Avoid Being Detected As Spam

One of the primary reasons to warm up your business email address is to avoid being detected as spam. Email service providers (ESPs) like Gmail, Microsoft Outlook, and Yahoo Mail have advanced algorithms that analyze incoming emails for potentially malicious or promotional content.

Warming up your email account helps you establish a positive email reputation by ensuring that your initial messages are directed toward real people’s inboxes who actively engage with them.

For example, when recipients open the emails you’ve sent during the warm-up process and interact positively by replying or marking them as important, ESPs recognize this engagement as a sign of legitimacy.

As a result, they’re less likely to flag future campaigns from your email address as spam – allowing prospects to see more of what you have to offer without hiding it away in their spam box.

Establish Trust With Email Providers

Establishing trust with email providers is crucial to warm up your business email address. This trust-building process involves proving to the inbox providers, like Gmail, Outlook, and Yahoo Mail, that you are a legitimate sender who respects their users’ inbox space and privacy.

One way to establish this trust is by sending personalized emails to real recipients while avoiding spam triggers such as overly promotional language or poor formatting.

Keep in mind that each email service provider has its unique set of rules and guidelines for determining which emails land in the primary inbox versus the spam folder. As you gradually increase the number of emails sent during your warm-up campaign, make sure they generate positive engagement from recipients – through opens, clicks, or replies – to avoid spam filters, eventually improving your sender reputation with email clients.

Improve Email Deliverability Rates

One of the most important reasons to warm your email address is to improve email deliverability rates. When you send out cold emails or start using a new email account, there is a risk that recipients mark your messages as spam, which can negatively affect inbox placement and sender email reputation.

To do this effectively, it’s essential to understand how email service providers evaluate incoming mail. They look at factors like domain reputation, IP address history, and engagement metrics like open rates and click-through rates.

One tactic for fewer spam scores and improving deliverability during the warm-up process is sending personalized emails with clear CTAs and an unsubscribe link.

This gives recipients a clear path forward and demonstrates that you’re committed to providing value rather than just blasting them with generic marketing messages.

How To Warm Up Email Domain Manually

Here’s a simple step-by-step guide to warming up your email accounts and increasing your chances of landing in the recipient’s inbox.

Start Slowly: Send A Few Emails A Day

During the email warm-up process, it’s crucial to start slowly and avoid sending a high volume of emails right away. Instead, send a few emails a day at first to establish your account as legitimate and trustworthy.

For example, if you’re planning a cold outreach email campaign, where you plan on sending 1000+ emails per day, starting with just 10-15 emails may seem slow, but it is essential not only for establishing trust with email providers but also for avoiding getting your domain reputation harmed by invalid email addresses.

Update Your Email Signature And Profile Details

Another important step in warming your email account is updating your email signature and profile details. Doing this adds a layer of personalization and authenticity to your emails, making them more likely to be received positively by the recipient.

Start by including relevant information such as your name, job title, company name, and contact information in your email signature.

You can also consider adding a personal touch to your email signature by including an image or logo that represents yourself or your brand. Make sure that all the information in your profile matches the details on any other platforms where you have an online presence.

Consistency across different channels helps ensure that recipients trust who they are communicating with.

Use Your Email For Non-Marketing Activities

In addition to sending marketing emails, using your email account for non-marketing activities during the email warm-up process is crucial. This helps to build a natural profile and prevent being flagged as spam by email providers.

For instance, you can use your email address for personal communication with friends and family or send messages related to volunteer work or community service projects you’re involved in.

Your sender’s reputation improves over time by showing engagement in various areas, allowing more emails to land in the recipient’s inbox rather than their spam folder.

Gradually Increase The Volume Of Emails

One of the key components of email warm-up is gradually increasing the volume of emails using a dedicated IP address. This process, also known as IP warming, involves slowly and steadily increasing the number of emails sent over time to establish trust with email providers and avoid being detected as spam.

For example, if you aim to send out 500 cold emails daily using a brand-new domain or long-inactive email account, start by sending just a few emails each day for the first week or two.

Maintaining consistency throughout this process is important so that email providers can successfully recognize and identify your brand as trustworthy.

Maintain Consistency And Track Results

Consistency and tracking results are crucial for a successful email warm-up process. By maintaining consistency in engagement, you can gradually increase the volume of emails sent while maintaining a good reputation with email service providers.

It’s important to remember that warming up an email account is not a one-time event but rather an ongoing practice.

For instance, if you notice that too many of your emails are landing in the spam folder, it may indicate that you need to adjust your approach or slow down on the number of emails being sent daily.

Tracking results will help you identify any issues early so that you can address them quickly before they become bigger problems.

How To Warm-Up Email Domain With Tools

This section will compare popular warm-up tools like,, Lusha, Warmbox, and to help you easily automate your email warmup inbox top-up process. is an email warm-up tool that can help businesses automate their warm-up email process and improve email deliverability rates. This tool sends personalized emails to real people’s inboxes, gradually increasing the number of emails sent.

One significant benefit of is its feature for sending personalized emails. This function helps establish trust with both email service providers and recipients.

In addition, includes a support team to help customers through any issues they may encounter during the email warm-up process.

One of the fast-growing personalized email and warm-up tools that can help automate the process is This platform allows businesses to send personalized emails to real people’s inboxes, gradually increasing the number of emails sent over time.

By warming up your email account through consistent and positive interactions with other warm-up users, you can build or recover sender reputation, improve email deliverability rates, and avoid landing in spam folders.

Compared to other email warm-up tools like Warmbox or, provides greater customization possibilities for creating personalized emails based on recipient data and domain name system (DNS) records.


Lusha is also one of the notable tools for automating the email warm-up process. This platform allows users to find and verify business email addresses, contact details, and company information based on a name or domain search.

By using Lusha’s email warming service, you can access accurate data that reduces bounce rates and improves your sender reputation. Additionally, Lusha offers an API that allows integration with other systems, such as CRM and marketing automation software.


Warmbox focuses on the service as an email warm-up tool that helps businesses improve their email deliverability rates and avoid being marked as spam. Using Warmbox, companies can automate the process of warming up their email accounts instead of doing it manually.

By generating daily activity in your inbox, Warmbox simulates positive interactions like replies and being marked as important by recipients. This ultimately helps establish trust with the email service provider and improves the sender’s reputation of your email domain. is an all-in-one sales automation email outreach tool that helps businesses streamline their outreach efforts. It offers email warm-up features to help avoid spam folders and improve deliverability rates.

With, users can send personalized emails at scale, track engagement metrics, and use automated follow-ups to increase response rates. The platform’s AI technology also simulates positive interactions such as replies and clicks to improve a sender’s reputation.

This makes it easier for businesses to make emails land in prospects’ inboxes instead of being automatically archived or sent to the spam folder.

PAA (People Also Asked)

Q: What is email warm-up, and why do I need it?

Warming up your business email address means gradually increasing the volume and frequency of emails sent from that address over a period of time and building trust with internet service providers (ISPs) to ensure that messages are delivered properly and not flagged as spam.

Q: How long does the email warm-up process take?

The length of time for warming up an email account can vary based on different factors like domain age, history of use activity level, etc. Typically, it takes two weeks or about thirty days to accomplish this task correctly.

The length of the warm-up period depends on several factors, such as the overall volume of emails being sent out, type of content being shared, etc., but generally speaking, 4-6 weeks is recommended when starting from scratch, assuming no prior reputation history exists around this particular email domain, name or IP address used by senders). During this time, it’s important to establish positive engagement rates within target audiences while avoiding high volumes too soon so one doesn’t get blocked outright by ISP filters before any momentum has been built.

Q: Can I automate my email warm-up process?

Several tools can automate some aspects of the email warm-up process. Some examples include,, Lusha Warmbox, and, which help users send low-volume email campaigns from their domain through various email service providers (Google Workspace/Gmail/Yahoo Mail), increasing their deliverability rates over time without causing excessive server load or inbox placement issues.

Note- Email service providers prioritize messages from domains (domain-based message authentication) with a positive domain reputation because they know these senders are trustworthy and won’t abuse their services by flooding recipients’ inboxes with unwelcome messages.

Q. Why is warming up my business email important?

Email providers have strict spam filters put in place to protect their users from spam or phishing attacks, meaning new email addresses without a track record can be viewed with suspicion. Warming up an account helps establish credibility with ISPs by demonstrating legitimate behavior, which ultimately increases deliverability rates over time.

Q. Can I avoid warming up my business email altogether?

It’s technically possible to bypass warming strategies and immediately begin sending large volumes of emails. However, this strategy can hurt credibility and result in fewer message deliveries if you’re caught by spam filters quickly enough. Taking steps towards gradual growth via A/B testing & smaller test groups allows businesses greater control over reputation management while minimizing risk from potential spam filter blacklisting due to excessive messaging practices. Not only will taking these precautions help prevent negative consequences down the line via spam filters, but it will also improve ROI through higher response rates once campaigns are launched successfully after the testing phase has cleared: proving worthwhile investment in due diligence today pays off dividends later on!

Key Takeaways

  • Email warmup is a strategic process to build trust and reputation for new or inactive business email addresses with inbox providers.

  • Warming up an email account involves gradually increasing the number of emails sent over time, engaging in positive interactions with recipients, and following best practices to avoid being detected as spam.

  • Email warmup is crucial because it helps establish trust with email providers, improve deliverability rates, and prevent being marked as spam.

Wrap Up

Email warm-up is essential for any business owner, marketer, or salesperson who wants to improve their email deliverability rates and avoid being marked as spam.

By gradually sending a few emails a day from your new or inactive account, updating your details, and using it for non-marketing activities, you can establish trust with inbox providers and increase the chances of getting high open rates.

With the help of various email warm-up tools available in the market today, you can automate this time-consuming process efficiently. Remember that your domain reputation is crucial in the email warm-up process.

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