How many dedicated IPs are needed for sending email volume?

Determining the number of dedicated IPs needed for sending email volume depends on a multitude of factors. These include sending volume, network infrastructure, available resources (dev ops, sysadmin, budget), desired control over sender reputation, and segmentation strategies. Shared IPs are generally suitable for low-volume senders (under 50,000 emails/month or even a few thousand), especially when budget is a concern, provided the ESP has a strong reputation. As sending volume surpasses 50,000 to 100,000 emails per month, dedicated IPs become increasingly beneficial for maintaining control and improving deliverability. Very high-volume senders (millions of emails/month) may distribute their traffic across multiple IPs to mitigate reputation risks. Regardless of the IP configuration, proper IP warming, regular reputation monitoring, robust authentication (SPF, DKIM, DMARC), and adherence to email best practices are paramount for optimal deliverability.

Determining the number of dedicated IPs needed for sending email volume depends on several factors, primarily the volume itself, sending frequency, desired level of control over sender reputation, and segmentation needs. Shared IPs are generally suitable for low-volume senders (under 50,000 emails/month, or even a few thousand) and smaller businesses with limited budgets, provided the ESP has a good reputation. As sending volume increases (above 50,000-100,000 emails/month), dedicated IPs offer more control over sender reputation and can improve deliverability. Very high-volume senders (millions of emails/month) may benefit from spreading their volume across multiple dedicated IPs to mitigate the impact of reputation issues. Effective IP warming, good sending habits, and implementing email authentication protocols are crucial for maintaining a positive IP reputation, regardless of the number of IPs used.

The number of dedicated IPs needed for sending email volume depends on several factors, including the specific sending volume, network engineering considerations, the resources available to the sender, and the desired level of control over sender reputation. While thresholds exist (e.g., 1MM per day mentioned, or even 20M/day/IP in some cases), specific setups should take into account network load balancing needs, available infrastructure, and the sender's capacity to manage their email program effectively. Dedicated IPs are preferred when the sender wants direct control over their reputation, while shared IPs expose the sender to others' actions. Monitoring IP reputation and gradually warming up new IPs are critical for success.

Regardless of the number of dedicated IPs used for sending email volume, it's important to focus on building and maintaining a positive sender reputation. Key strategies include gradually warming up IPs with small sending volumes, actively monitoring bounce rates and spam complaints, implementing email authentication protocols (SPF, DKIM, DMARC), and adhering to best practices for subscriber list management and email content. By focusing on these foundational elements, senders can improve their deliverability regardless of whether they're using dedicated or shared IPs.