1. Home
  2. Marketing Glossary

IP Warming

What is IP Warming and what is it for?

In email marketing, IP warming is a strategy that consists of gradually sending increasing amounts of emails.

These messages are sent from a specific IP in order to create a solid reputation with email service providers (ISPs).

This process allows senders to establish credibility by demonstrating to ISPs that their email traffic is legitimate.

And therefore worthy of being delivered to recipients’ inboxes, rather than being flagged as spam.

Relevant historical data

The concept of IP warming came to the fore when ISPs began to implement more sophisticated systems to filter spam.

In the early days of email marketing, senders could send a lot of emails without much regard for their IP reputation.

However, with the increase in spam and phishing attacks, ISPs strengthened their policies, rigorously evaluating the origin of emails.

It became necessary to adopt practices that guarantee effective email delivery.

This gave rise to the IP warming process as an essential method for digital marketers.

Key considerations

When starting an IP warming process, there are several factors that must be considered to ensure its success.

Firstly, it is essential to establish a timetable detailing the number of emails that will be sent and how long the process will take.

In general, this period can vary from a few weeks to several months, depending on the total number of emails and the specific objectives of the campaign.

Secondly, the quality of the content sent is vital.

All emails must be relevant, interesting and, above all,subscribers must want to open the messages.

This means that messages must be well segmented and personalized, pin order to maintain low complaint levels andy guarantee high interaction rates.

These are some of the elements that ISPs consider when assessing an IP’s reputation.

In addition, it is important to continuously monitor and adjust campaigns according to response and delivery metrics.

Email marketing analysis and management tools, such as open, click and bounce rates, provide valuable information.

This information can be used to optimize the IP warming process and improve the overall effectiveness of email campaigns.

Why it is important, advantages

IP warming is fundamental in the context of email marketing for several reasons.

Firstly, it maximizes the chances of emails reaching the inbox, bypassing spam filters.

This is essential to ensure that marketing messages effectively reach your target audience.

This can translate into a higher conversion rate and, ultimately, increase ROI.

In addition, a reputable IP is less likely to be blocked by ISPs, which guarantees the long-term sustainability of campaigns.

This also helps to avoid fluctuations in delivery rates that can occur when emails are sent from cold IPs or IPs with questionable reputations.


IP warming is an essential practice in email marketing, fundamental to creating and maintaining a solid sending reputation.

This process not only improves email delivery rates, but also contributes to the overall success of digital marketing campaigns.

Through a methodical and thoughtful approach, senders can ensure that their messages are received, read and acted upon by their target audience.