If you have a backup of your emails in EML, MIME, or Mbox format, you can easily import them to Hostinger Emails using Webmail. If you have several files, you can pack them into a .zip archive.
To start the process, log in to your email account via Webmail, click on More, and select Import messages:
Browse to select your email backup file and click on Import to start the process:
Depending on the size of your file, it may take a few minutes to complete the process. After the import is completed, a notification will appear:
The maximum allowed file size is 256 MB. If your file is larger than that, you can split it
Alternatively, you can migrate to Hostinger Email via hPanel using the Migration Tool. Just follow this guide: How to Migrate Emails to Hostinger