One of our recent customers is aiming at launching a campaign to 15.000 contacts at the end of the month, after testing messages and APs on only about 50 of them. When emails are sent through Act-On servers, is there such a thing as IP warming to comply with? Would you recommend gradually increasing volumes over one week for instance or would it be enough to use the send-over-time feature over the same period?
Thank you for any insight.
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