Why does my account say 'warming up'?
In order to ensure SendFox continues to have high deliverability rates for all our users, we have an optimization system in place.
The 'warming up' occurs to the first email you send to more than 1,000 contacts. Your email will initially send to 1,000 contacts.
If your emails have good stats in the first couple of hours, your emails will continue to send to the rest of your mailing list. If they don't have good stats, we optimize your email to improve your deliverability and protect your sender reputation.