With Thunderbird email software, users can import MBOX files into Gmail. Configuring your Gmail account in Thunderbird is the first step. After it is configured, import the MBOX files into Thunderbird and transfer them to the folder of your preferred Gmail mailbox. Directly upload MBOX files into a Gmail account using this manual method. But there are some limitations in the free method, like limited conversion, a step-by-step guide, and technical knowledge.
Use the BLR Tools MBOX Converter software for a quicker and more effective fix. This robust tool maintains the original folder structure throughout the import process and protects data integrity. It is completely compatible with all Windows OS versions, both old and new, and operates independently without needing extra utilities. This tool can be used to directly import MBOX Files/Emails into Gmail without downloading Thunderbird. Additionally, the program has proficient filtering features that let users import particular emails according to sender, recipient, date range, and other criteria. Get the tool and use the free demo version to test out its features.