Since "mail.ru" is a Russian service, your text file might include Cyrillic characters.
Ensure the file is saved in UTF-8 encoding . If characters appear as gibberish (mojibake), try changing the text editor settings to recognize Russian characters. mail.ru.txt
Keep it on a single line with no extra spaces or hidden characters unless specified by the platform. 2. Effective Plain-Text Email Since "mail
Manually add a carriage return after every 50–60 characters to prevent the text from stretching too wide on different screens. Since "mail.ru" is a Russian service