How to store huge amount of unstructured data

How can i store huge amount of unstructured data for example social media chat, email, website data

Please help me with storing below sample email and ideas on storing social media chat.

Hi John.

Thank you so much for [action they did] It was such a pleasure to work with you, and I’m very excited about the next opportunity to work together again.

Please don’t hesitate to contact me if I can provide any additional information.

Best regards,

Hi,

I suppose it completely depends how you want to utilize the storage.
The question is a bit too vague to answer. Could share a little more specific purpose??

how to store a novel book (text) data into Elasticsearch.