Content Selection For Campaign
Make sure your content is genuine and contact permitted to send this type of content. otherwise, they will make compliant to ESP(Gmail, Yahoo, and Microsoft) and they will recognize your profile as a spam sender.
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How To set ContentCreate a campaign
Select valid Audiance from you contact and segment.
Select Meta Field like Subject, Preview Text and sender profile
select Template in From Template Library or You can Import HTML from URL.
Click on the `Preview Campaign Button.