Posts tagged: List of Mime Types by file extension

How to Fix “Sorry, this file type is not permitted for security reasons”

This error occurred in our WordPress Newsletter plugin and our users started reporting it so we had to resolve the problem. We released version 4.6.5.2 of our Newsletter plugin in the meanwhile which has a workaround included for the error. So if the issue is in our plugin, please update it else continue reading if […]

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Beautiful Newsletter Templates

Professional newsletter templates that are fully responsive for desktop, tablet and mobile. They are 100% cross-client compatible.

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