As we know there is no built-in feature available in gmail to send entire folder at single time, if you try to send folder it will ask to attach all folder files one by one, but you can send entire folder in a single attachment just changing a folder format, just follow these easy steps.
1. Right click on the folder navigate and click on “Send to”
2. Click on “Compressed (zipped) folder” the folder will be in zip format, now you can easily attach and send zip folder through gmail.
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