Three tasks before sending Unlimited email send campaign:

1. Set SMTP

2. Verify emails are accurate and live

3. Upload file 

4. Template set up

Very important to follow couple guidelines for maximum effect. 

1. Timing in seconds 240s – 360s

2. Best if Subject line is a question (For higher rate)

3. Visit and test subject line at https://sendcheckit.com .  Score should be 90 and above

Spammy words (Avoid)

1. Know the List of Spam words

2. Customize the email

3. Macros (Company name, title etc.