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delete the local file once you have uploaded it to your secure database or CRM.

Look for broken email addresses (like "name@gmail..com") that will cause bounces. 2. Segment for Personalization ШЄЩ†ШІЩЉЩ„ 450 Щ…ШіШЄШ®ШЇЩ… txt

With 450 users, you are in the "sweet spot" for personalized automation. You can use tools like Mailchimp or HubSpot to send a "Welcome" sequence. Because the list isn't massive (like 50,000+), your deliverability rates will likely be higher, and you can afford to be more personal in your tone. 4. Security First Remember, a .txt file containing user data is sensitive. send this file over unencrypted email. delete the local file once you have uploaded