require 'pp'
def extract_emails_to_array(txt)
    reg = /[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}/i
    txt.scan(reg).uniq
end
def extract_numbers_to_array(txt)
    reg = /(?:\+?|\b)[0-9]{10}\b/i
    txt.scan(reg).uniq
end

string = '<div class="footer_area"><center>Contact Us- +91665865753  Mobile - +91 324 878 994  Email - [email protected] or [email protected]</br>';

pp extract_emails_to_array(string)
pp extract_numbers_to_array(string)