To split your large TXT file into separate lists for Gmail, Yahoo, Hotmail, and AOL, you can use the search or filter function in your spreadsheet. Filter the email column by text containing "@gmail.com", copy those rows, and paste them into a new TXT file named gmail_list.txt . Repeat this process for @yahoo.com , @hotmail.com (and @outlook.com ), and @aol.com . Crucial Deliverability and Sender Requirements
For advanced email marketing, you may want to separate your list by domain type. Keeping Gmail users separate from Yahoo or AOL users allows you to tailor your technical sending habits, as different inbox providers have distinct spam filtering thresholds and daily receiving limits. Best Practices and Legal Compliance email list txt yahoo hotmailaol gmail