4 ms·
Which then means they are, by definition, not legit sites.
by pwg 5y ago
Which then means they are, by definition, not legit sites.
- btown 5y agoPer https://www.campaignmonitor.com/blog/email-marketing/39-of-senders-use-confirmed-opt-in-lists-do-you/ https://www.campaignmonitor.com/blog/email-marketing/39-of-s... double-opt-in is a best practice but not strictly required. (IANAL and local laws may vary.)