intercom.ioは安全ですか？

Not something I would unblock. Analysis is the one keyword enough for me, and honestly should be for anyone who cares about their privacy and understands how much tracking and profiling actually does for one. Same thing for "widgets.intercom.io", which has a misleading URL if you ask me - to me widgets refers to items you can add on your site for the users benefit, not some hidden data collection stuff.

This is a good site, used for business communications. If you trust the users of the site you are linked too then you should be OK, BUT Google does warn that there are SOME links, namely intercomassets.com, which link to malware sites that could download malware or pups onto your system. As a result, marked this site with caution (More to do with the fact that the target is intercomassets.com, which users might reasonably expect to be safe.

This site is used as a messaging service by other websites. They provide services to communicate with users by messaging and email. The site could therfore be used for suspicious activity but it is not intended as such. If you trust the website that uses the services of intercom.io then it should be ok.