Thanks for reaching out! I see that you recently emailed Customer Support and that we already assisted you, but I also wanted to post a reply here in case anyone else experiences the same issue. In most cases "stretching" within an email campaign can be caused by:
an image that is too wide (the solution is to resize the image)
a long link/URL that is placed within text (the solution is to create a text link)
a custom divider created by a long string of symbols (the solution is to use a Divider block instead)
I hope this helps!
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