› Gmail recommends using only opt-in addresses
› Yahoo requires the use of opt-in or confirmed opt-in addresses, and CAN-SPAM compliance no matter where you are located
› Hotmail does not allow unsolicited commercial emails at all
What happens if you send unsolicited emails to B2B contacts at these providers?
It’s simple - you will get blacklisted, none of your emails will get through and your Mailjet account may be suspended or terminated. Even if you have a dedicated IP, sending unsolicited emails cannot be allowed as it may lead to all our IPs being blocked.
We understand this is quite complicated and may make sending your business emails more difficult. But this is what is required to fight spam and provide better deliverability results for all our customers.