What Is email throttling (and what you can do about it)?
Blog post from Twilio
Email throttling is a process where Internet Service Providers (ISPs) limit the number of emails accepted from a particular sender within a specific timeframe, often resulting in delivery delays and higher bounce rates. This can be a challenge for high-volume senders, such as daily deal sites, who rely on timely email delivery. Throttling can occur due to factors like full recipient mailboxes, unrecognized IP addresses, or suspected spam activity. While email throttling can hinder immediate communication, it also offers benefits like managing server load and call center volumes during high-traffic periods. Twilio SendGrid provides strategies to manage and prevent throttling, such as gradually increasing email volume to build a positive sender reputation, segmenting email lists, and utilizing analytical tools to gain insights into delivery issues. By partnering with an experienced email provider like SendGrid, businesses can improve their email deliverability and ensure their messages reach recipients reliably.