Hi @AshKey,
We're very sorry to hear that lines are appearing in your email campaign as well. We are tracking this in customer accounts and our engineers are working as quickly as possible to get it resolved! We do know that this seems to be happening with email marketing templates from all email marketing companies. Nevertheless, in some cases, combining multiple blocks into one block will reduce the number of lines. Another workaround would be to match the Outer Background color of your email campaign with the Inner Background color. In your email campaign, click Design to change the background colors:
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