There can be odd behaviors with third party apps, too, and if you get dependent on that service you're at their mercy if they don't fix the issue. I mentioned

There can be odd behaviors with third party apps, too, and if you get dependent on that service you're at their mercy if they don't fix the issue. I mentioned in a separate comment, Sunrise substituted a generic email address for mine in an invite response, but with my name ("Brer Lapn <invite@sunrise.am>"), which when someone replied to the group began to propagate across multiple co-workers' Outlook as the autofill address for my name. I missed email from some people for a week before one of my coders noticed it and let me know, at which point I had to get colleagues to forward me any message with that address, contact the sender and ask them to remove it from their Outlook autofill settings, and repeat ad nauseum until correspondence started coming to me again. I sent a bug report, they responded "we'll look into it" and never heard another word about it, so for all I know it is still happening. If we'd have integrated that into the company processes rather than just my using it to consolidate my calendars it would have been a serious problem.