What daily volume is recommended for sending to Gmail in the first 3 days?

The recommended daily volume for sending to Gmail in the first three days is 5,000 emails. This approach is designed to ensure that email senders establish a positive sending reputation with Gmail. By starting with a lower sending volume, marketers can monitor engagement metrics closely, such as open rates and clicks, which are crucial for maintaining a good sender reputation. If the initial batch of emails performs well, senders can gradually increase their volume in subsequent days.

Gmail uses a complex algorithm to assess the quality of incoming emails, so starting with a smaller number allows time to adjust based on feedback and performance before scaling up. This method helps to avoid being flagged as spam and ensures that emails land in the primary inbox rather than being filtered out. It is a prudent step to establish trust with the recipient's email system early in the campaign.