How does email send throttling affect Gmail spam placement and overall deliverability?
Summary
What email marketers say10Marketer opinions
Email marketer from Reddit explains that Gmail's spam filters are highly sensitive to sudden volume changes. Throttling can help avoid triggering these filters, especially for new IPs or domains. Focus on consistent engagement signals to improve inbox placement.
Email marketer from GMass Blog explains that throttling helps stay within Gmail's sending limits and avoid triggering spam filters. Gradual increases in sending volume are recommended to maintain a good sender reputation.
Marketer from Email Geeks says throttling it over a longer period of time can help with things like spreading your spam complaints and emailing spam traps over a longer period of time instead of all at once. Throttling can also help with infrastructure load management or stopping the send if there's a mistake. Throttling it over 30 minutes doesn't do much though.
Email marketer from Campaign Monitor Blog shares that throttling is essential for managing sender reputation and avoiding spam filters, especially when sending large volumes of emails to Gmail and other major email providers.
Email marketer from Quora responds that sending emails too quickly can negatively impact deliverability, especially with Gmail. Implementing throttling measures is vital to maintain a consistent sending pace and a positive sender reputation.
Email marketer from Stack Overflow explains that SMTP servers often impose connection limits. Throttling the number of concurrent connections can prevent being blacklisted for exceeding these limits, impacting deliverability.
Email marketer from SendGrid Blog responds that throttling allows senders to control the rate at which emails are sent, helping manage IP and domain reputation. Consistent, throttled sending is preferable to large bursts that can trigger spam filters.
Email marketer from Litmus Blog responds that consistent sending cadence, achieved through throttling, helps maintain a positive sender reputation. Avoid erratic sending patterns to improve inbox placement with Gmail and other ISPs.
Email marketer from Email on Acid Blog shares that throttling is crucial during IP warm-up to establish a sending reputation gradually. Sending too much too soon can lead to deliverability issues, especially with Gmail.
Email marketer from Mailjet Blog shares that throttling can indirectly improve deliverability by preventing sudden spikes in sending volume, which can damage sender reputation. A consistent sending pace helps maintain a good reputation with ISPs like Gmail.
What the experts say4Expert opinions
Expert from Spam Resource explains that sending email in large, sudden volumes can negatively affect deliverability and increase the likelihood of being marked as spam by ISPs like Gmail. Throttling the sending rate is recommended to maintain a more consistent and reputable sending pattern.
Expert from Email Geeks shares that they never saw sending to the most engaged users first make a difference in inbox placement. While some suggested this strategy for Yahoo, they believe bulk/spam foldering is primarily related to recipients not wanting the mail, not sending speed.
Expert from Word to the Wise responds that throttling won't directly affect Gmail's spam filtering. Gmail's algorithms focus on user engagement and content quality, not just sending speed. A strong sender reputation built on positive user interactions is key.
Expert from Email Geeks explains that throttling will not impact Gmail spam placement. To improve inboxing, focus on sending mail that encourages recipients to engage positively, signaling to Google's machine learning filters that the mail is wanted.
What the documentation says4Technical articles
Documentation from SparkPost explains that throttling is a proactive approach to prevent deliverability issues by controlling the sending rate and volume. This minimizes the risk of triggering spam filters and ensures better inbox placement.
Documentation from Microsoft Learn details sending limits for Exchange Online, including message rate limits. Exceeding these limits can result in temporary blocks, affecting deliverability to recipients using Microsoft services.
Documentation from Google Workspace Admin Help explains that gradually increasing sending volume helps establish a positive sending reputation. Sudden spikes can trigger spam filters. Monitor bounce rates and user complaints to adjust sending practices accordingly.
Documentation from RFC 5321 explains that SMTP servers may implement rate limiting to prevent abuse and ensure fair resource allocation. Exceeding these limits can result in temporary or permanent rejection of emails, impacting deliverability.