If you are trying to import EML emails into Gmail  while keeping attachments intact can be challenging because Gmail does not natively support bulk EML uploads. A reliable solution is using MacSonik EML Converter for Mac. This tool allows users to import EML files directly into Gmail without losing email formatting, metadata, or attachments. Simply add single or multiple EML files, preview the emails, select Gmail as the destination, and log in with your account credentials. The software supports bulk migration, making it ideal for transferring large collections of EML files efficiently. It also offers advanced features such as date-range filtering, duplicate email removal, attachment management, and email preview before migration. Compatible with all major EML-based email clients and modern macOS versions, MacSonik ensures a secure and accurate migration process. The free demo version lets users migrate up to 50 emails per folder for evaluation purposes.

Yes, you can import your EML emails into Gmail without losing attachments, but these things decide which way you use, which makes a difference. If you have only a few messages, you can forward them manually. But that method is so slow and often affects folder organization for large EML collections.

A better approach is using a dedicated EML to Gmail migration tool. For example, Softaken EML to Gmail Importer is an efficient offline tool to upload single or multiple EML and EMLX files with attachments as well as email properties like To, CC, BCC, Date and the original folder hierarchy. It also lets you pull data straight into an existing Gmail folder, or create a new one.

It is a good practice to check the results before importing the whole mailbox by testing the demo version.

Hopefully this helps.