To transfer Mac OLM files to Opera Mail in 2023, you can use one of the following techniques:

1. Manual Method: The manual method involves converting the OLM files to a format that is compatible with Opera Mail. You can use the following steps:

Step 1: Export the OLM files to the MBOX format using the OLM to MBOX converter.

Step 2: Import the MBOX files into Opera Mail using the Import Wizard.

While it is possible to transfer Mac OLM files to Opera Mail using the manual method, it is generally not recommended by professionals due to the following reasons:

1. Time-consuming and tedious process: The manual method of transferring Mac OLM files to Opera Mail involves exporting OLM files to MBOX format using a converter tool and then importing MBOX files into Opera Mail using the Import Wizard. This process can be time-consuming and tedious, especially if you have a large number of OLM files.

2. Risk of data loss: During the manual conversion process, there is a risk of data loss or corruption. If any error occurs during the conversion process, it can result in data loss, making the entire process futile.

3. Technical expertise required: The manual method of transferring OLM files to Opera Mail requires technical expertise, and if you do not have a technical background, you may encounter difficulties during the process.

So, above these are some reasons why professionals don't recommend you use the manual method

Professional Methods to Migrate Mac OLM file to Opera Mail

The best way to convert an OLM file to Opera Mail is to use a professional tool like Data Recovery Freeware Mac OLM Converter. This is the smart and best OLM Converter tool that converts the OLM file to a number of email clients such as Office 365, Thunderbird, Yahoo Mail, Zoho Mail, etc. It also helps to convert single and multiple OLM files at the same time. It also helps to preview the OLM file before conversion. So, many additional features come with this tool.