So today we put out an email campaign, and the system would not let us proceed WITHOUT the tracking pixel code, which we were prepared to do, and we decided opens tracking was not as important as a big spam message mentioning malicious emials, but the system would not let us continue with the "errors" in the code. So we noticed that when using the built in "let us fix it" feature, the tracking code is being inserted immediately after the body tag. If we MANUALLY added the code at the very end, before the closing body tag, the gmail client spam warning and malicious email warning that hides the header image, magically went away, we tested this a few times, on different gmail mobile devices AND desktop devices, and so we went this direction. So it seems on our end, that the automatic fix, that puts the tracking pixel right after the body tag, is a huge problem.
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