Cache mobile sms preview

[choussamaster]

Hi
We sent an sms compagn today and we noticed a large number of not cached request
after investigation we realized that the sms application on many devices (specially android) is showing a preview of the sent link, and this link is crawled via an integrated bot that does not accept cookie.
So despite having put an internal redirect link in magento to land on a cached page,
the bot is crawling uncached pages.
We compare the ReqHeader of the bot with other requests, "accept-language" is missing and "Accept-Encoding" has the value "identity"
Any idea how we can cache the viewed pages by this bot without cookie frontend

varnish-cached.txt
varnish-notcached.txt