Suped

Summary

Determining the optimal number of emails to send from a single IP address per day is a nuanced process without a definitive answer. The consensus is that it heavily relies on several interconnected factors. While some suggest sending 1-2 million emails daily, or even claims of 8-10 million, the critical aspect is the rate and timeframe over which these emails are sent. A key strategy involves 'warming up' the IP address, especially for new IPs, by starting with small volumes (hundreds or a few thousand) and gradually increasing it over weeks or months. Monitoring sender reputation, engagement metrics (open rates, click-through rates), bounce rates, and spam complaints is crucial. Email sending limits can also vary based on account type and the specific guidelines set by email service providers. Factors such as recipient mailbox distribution, content type (transactional or marketing), and sending infrastructure also affect deliverability. It's important to maintain good list hygiene and proactively add IPs as sending volume increases to avoid overloading ISP servers.

Key findings

  • No Single Answer: There's no one-size-fits-all number for the optimal number of emails.
  • IP Warm-up: Gradually increase sending volume over time, especially for new IPs, to build sender reputation.
  • Reputation Matters: Your sender reputation impacts how many emails you can send without deliverability issues.
  • Monitor Metrics: Keep a close eye on engagement metrics (opens, clicks), bounce rates, and spam complaints.

Key considerations

  • Recipient Distribution: Consider the recipient mailbox distribution (e.g., Gmail, Yahoo) when determining sending volume.
  • Content Type: Differentiate between transactional and marketing content, as this influences deliverability.
  • Sending Infrastructure: Understand your email sending infrastructure's capabilities and limitations.
  • Account Type Limits: Adhere to sending limits that might vary depending on your email account type or plan.
  • List Hygiene: Practice good list hygiene to avoid sending to invalid or unengaged addresses.
  • Avoid Overloading ISPs: Proactively add IPs or adjust sending strategies to prevent overloading ISP servers and harming deliverability.

What email marketers say

11 marketer opinions

Determining the number of emails you can send from one IP address per day is not a fixed quantity but depends on several interconnected factors. There is no single 'correct' number. The primary driver is the sender's IP reputation; a well-established reputation allows for higher volumes. When warming up a new IP, it is crucial to start with low volumes (a few hundred to 2,000 emails) and incrementally increase the sending volume daily or weekly, carefully monitoring engagement metrics, bounce rates, and spam complaints. Other influential aspects include the recipient mailbox distribution, the nature of the email content (transactional vs. marketing), and the sending infrastructure capabilities. It's also important to consider throughput and desired sending speeds. Good list hygiene and adherence to best practices for email sending are essential to maintaining a positive sender reputation and avoiding being flagged as spam.

Key opinions

  • No Fixed Number: There isn't a single 'correct' number of emails you can send from one IP address per day.
  • IP Reputation Matters: Your IP's reputation significantly influences the volume you can send; a better reputation allows for higher volumes.
  • Gradual Warm-up: For new IPs, start with low volumes (a few hundred to a couple thousand) and gradually increase over time.
  • Monitor Metrics: Closely monitor engagement metrics (opens, clicks), bounce rates, and spam complaints during and after IP warming.

Key considerations

  • Recipient Distribution: Consider the distribution of recipient mailboxes (e.g., Gmail, Yahoo) when determining sending volume.
  • Content Type: Differentiate between transactional and marketing content, as this can influence engagement and deliverability.
  • Infrastructure Limits: Understand the capabilities and limits of your email sending infrastructure (ESP or MTA).
  • Throughput and Speed: Factor in the desired speed at which you want to send emails, as high throughput can impact deliverability.
  • List Hygiene: Maintain good list hygiene practices to avoid sending to invalid or unengaged addresses.

Marketer view

Email marketer from NeilPatel.com explains that there's no hard and fast rule, but generally, new IP addresses should start with a low volume (e.g., a few hundred emails) and gradually increase it daily. Monitor your sender reputation and engagement metrics (opens, clicks) closely.

20 Aug 2024 - NeilPatel.com

Marketer view

Email marketer from Litmus says that it depends on your sender reputation; a good reputation allows you to send more. Monitor metrics like open rates, click-through rates, and spam complaints closely.

18 Jun 2023 - Litmus

What the experts say

4 expert opinions

Determining the number of emails you can send from one IP address per day is complex and depends on several factors. While some experts suggest sending 1-2 million messages a day, and claims exist of sending 8-10 million, the timeframe within which these emails are sent is critical. Sending volume should be considered alongside IP warm-up procedures. Gradual volume increases based on engagement and feedback are crucial, emphasizing starting with smaller quantities (hundreds, not thousands) and closely monitoring deliverability metrics. Overloading ISP servers is a concern with high-volume sending, suggesting proactive addition of IP addresses when approaching limits.

Key opinions

  • Volume Varies: Estimates of daily email volume per IP range significantly (1-2 million to 8-10 million).
  • Timeframe Matters: The speed at which emails are sent impacts deliverability, not just the total daily volume.
  • IP Warm-up is Key: Gradually increase sending volume over time to build a positive sender reputation.
  • Monitor Engagement: Track engagement and deliverability metrics and adjust sending volume accordingly.

Key considerations

  • ISP Limits: Be aware of the potential to overload ISP servers with high-volume sending.
  • Proactive Scaling: Consider adding IP addresses proactively as sending volume increases.
  • Reputation Building: Focus on building and maintaining a positive sender reputation through responsible sending practices.

Expert view

Expert from Email Geeks responds to how much daily email you can send from one IP address. She says 1 - 2 million messages a day.

24 Apr 2023 - Email Geeks

Expert view

Expert from Word to the Wise, Laura Atkins, responds that there isn't a single number. It's important to gradually increase volume based on engagement and feedback. Start small (hundreds, not thousands) and watch your metrics.

30 May 2024 - Word to the Wise

What the documentation says

4 technical articles

Email sending volume from a single IP address is not a fixed number but a dynamic process requiring careful management. Documentation from various sources emphasizes a gradual 'ramp-up' or 'warm-up' strategy, especially for new IP addresses. This involves starting with small batches and incrementally increasing volume over weeks, relying on feedback from ISPs to guide the process. Adhering to best practices for sending volume and frequency is crucial to avoid being flagged as spam. Monitoring domain and IP reputation using tools such as Google Postmaster Tools is also recommended. Guidelines from email platforms such as Microsoft emphasize adherence to their specific sending limits, which vary by account type.

Key findings

  • Ramp-Up Strategy: New IPs should implement a gradual ramp-up of sending volume.
  • ISPs Feedback: Volume increases should be based on feedback and signals from ISPs.
  • Best Practices: Following established best practices for sending volume is crucial.
  • Reputation Monitoring: Monitor domain and IP reputation to ensure compliance and detect issues.

Key considerations

  • Account Type Limits: Adhere to specific sending limits that may vary based on the type of account you have.
  • Avoid Spam Flags: Implement strategies to prevent emails from being flagged as spam by adhering to best practices.
  • Incremental Volume Increases: Gradual increases in sending volume will help establish a positive sending reputation over time.

Technical article

Documentation from Microsoft explains the importance of adhering to sending limits and recommends checking their guidelines on bulk sending to prevent being marked as spam. These limits can vary for different account types.

22 Jan 2024 - Microsoft

Technical article

Documentation from Google Postmaster Tools explains that it's crucial to adhere to best practices for sending volume and frequency to avoid being flagged as spam. They suggest monitoring your domain and IP reputation within their tools.

12 Feb 2024 - Google

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