What send throttle is recommended for warming up an IP address with no recent sending history?
Summary
What email marketers say7Marketer opinions
Email marketer from Reddit explains that starting with your most engaged subscribers is a good strategy. They suggest segmenting your list and sending to those who are most likely to open and click, which will help build a positive reputation quickly.
Email marketer from GlockApps shares that consistent volume increases are key when warming up an IP. They advise starting with a low volume and gradually increasing it daily or every few days, depending on the overall volume and list quality.
Email marketer from Mailjet recommends a gradual approach to IP warm-up, suggesting starting with your most engaged subscribers and gradually increasing the volume of emails sent over time. They also suggest segmenting your list and sending to smaller, more targeted groups first.
Email marketer from Customer.io explains that sending limits should be scaled gradually, with a focus on monitoring opens, clicks, and bounces. They advise planning the warm up process over several weeks. They explain that as engagement improves, sending volume should increase.
Email marketer from Litmus shares that sending frequency during warm-up should be consistent but not overwhelming. They recommend daily sends at increasing volumes rather than sporadic large batches. They also suggest carefully monitoring deliverability rates and adjusting based on results.
Email marketer from Email Marketing Forum explains that warming up an IP address too quickly can damage its reputation. He recommends starting with a very small number of emails and gradually increasing that number over time, monitoring the IP’s reputation along the way. He suggests starting with 50 emails per day then increasing by 50 each day.
Email marketer from EmailToolTester responds that the initial sending volume should be low, perhaps a few hundred emails per day, then gradually increased. They recommend closely monitoring bounce rates and engagement to ensure good deliverability.
What the experts say6Expert opinions
Expert from Email Geeks advises contacting Microsoft through their form to request pre-emptive mitigation for the IP address.
Expert from Email Geeks explains that the warmup process is about establishing that mail from this new subdomain/IP combination is wanted mail.
Expert from Email Geeks states that if an IP hasn't sent mail for a year, it should be assumed that there is no history for that domain/IP combination, and the warm-up process needs to start from scratch.
Expert from Word to the Wise responds that the warm-up process should be focused on engagement, advising to send initial emails only to highly engaged users. They explain that sending to engaged users provides positive signals to mailbox providers, improving the IP's reputation and deliverability.
Expert from Spamresource explains that consistent sending is important during the IP warm-up process, advising to avoid large sending volume fluctuations and maintain a predictable sending pattern. They also suggest monitoring the reputation data from major mailbox providers and adjusting the warm-up strategy based on the feedback.
Expert from Email Geeks suggests a 2-3 week warmup for the IP, assuming a different subdomain of the active domain is used. She suggests starting with 10K on the first day, 15K the second, 20K the third, and 30K the fourth, and increasing by 10K each day or doubling after the 4th or 5th day to reach 200K quickly.
What the documentation says5Technical articles
Documentation from Google Postmaster Tools explains the importance of monitoring your IP reputation using their tools. They explain that a clean IP reputation is essential for successful deliverability, and provide recommendations for maintaining it during warm-up.
Documentation from SparkPost explains that IP warming involves gradually increasing sending volume to establish a positive reputation with ISPs. They recommend starting with a small batch and gradually increasing volume over several days or weeks. Monitor sending reputation closely.
Documentation from SendGrid explains that warming up an IP address involves progressively increasing sending volume. They emphasize the importance of consistent sending and monitoring deliverability metrics. They provide a detailed schedule for gradually increasing volume.
Documentation from Amazon SES explains the importance of gradually increasing your sending limits. They explain how to monitor your reputation and adjust sending volumes based on feedback from ISPs, and provide tools to help automate this.
Documentation from Microsoft explains the importance of using SNDS to monitor your IP’s reputation during warm-up. They outline how monitoring metrics can help to diagnose and quickly resolve problems that could affect deliverability, also that good reputations are essential for successful delivery.