Email warm-up is a strategic process that involves the gradual sending of emails from newly established email accounts. This method commences with a small volume of emails, steadily increasing the daily sending limits over time. The primary objective of this approach is to cultivate a positive relationship with the email service provider, preventing the domain from being flagged as spam. When users create new email accounts, they are subject to daily sending limits imposed by their email service provider. For instance, Google recommends a daily limit of 2000 emails for G Suite accounts. However, these limits cannot be fully utilized from the very outset, as they must be gradually expanded to avoid restrictions.

When individuals aspire to maximize the effectiveness of their email campaigns, building a robust sender reputation through the email warm-up process is essential. Typically, it takes eight to twelve weeks for individuals to achieve optimal deliverability using email warmup. The speed at which emails become fully operational during the email warmup depends on factors such as recipient engagement and email volume. If a recipient’s engagement level falls below expectations, it may extend the duration of their email warmup, requiring more time than originally anticipated.

Reasons for warm-up

At times, individuals may question the necessity of employing a dedicated email warm-up procedure. However, it’s important to recognize that email warm-up serves a distinct purpose separate from traditional email campaigns. Its primary goal is to significantly improve email deliverability. In the world of email marketing, even the most well-crafted campaigns can sometimes yield a disappointingly low response rate. Additionally, if just two recipients flag an email as spam, it can lead to blacklisting. These are some of the compelling reasons why email warm-up plays a crucial role in ensuring the success and reach of your email marketing efforts.

Warm-up Enhances Sender Reputation for Better Deliverability

Email warm-up is a vital process that cultivates a sender’s positive reputation. Leading email service providers (ESPs), including Outlook and Gmail, assess the sender’s reputation to deliver the best user experience. Email warm-up, by sending and receiving emails naturally, contributes significantly to building and maintaining this reputation. Whether someone is working to repair a tarnished reputation or starting anew, email warm-up plays a pivotal role in this process.

Email warm-up expedites the scaling of outreach efforts

While email warm-up may initially appear time-consuming, it significantly accelerates the process of reputation building. Manual email warm-up can be completed in a matter of a couple of weeks, allowing you to commence cold email campaigns promptly. Alternatively, individuals can opt for a dedicated tool to automate the warm-up process, streamlining and expediting the entire procedure.

Email warm-up enhances deliverability

Numerous factors play a pivotal role in crafting high-performing sales emails. Personalized images, for instance, have the power to instantly capture the reader’s attention. Regrettably, spammers have been known to misuse images, using them as a substitute for text in an attempt to evade filters.

Typically, a sales email contains a link, either for viewing a product demo or scheduling an appointment. To make these links more aesthetically appealing and user-friendly, URL shortening services are widely adopted. They transform lengthy text strings into concise links. However, it’s worth noting that spammers occasionally exploit these services to mislead recipients by redirecting them to different destinations.


Email warm-up is an integral component of successful email campaigns. Whether conducted before or during a person’s cold outreach efforts, this process significantly enhances email deliverability, ensuring that their emails reach their intended prospects.

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