I've emailed him a lot, but the first time I called and left a voice mail was the morning after my husband tried to set our house on fire and a 6 hour standoff with the police ensued. Once I was allowed back in the house, I fell asleep for about an hour and when I woke up had a massive panic attack and left what I'm sure was a mostly unintelligible voice mail. I also sent him an email about what had happened. This came the day after we had just discussed how he can't provide on call service, but honestly this seemed like an event where it might be okay to call. (This conversation came about because my h had started to escalate his abuse and I was emailing my t instead of calling a crisis line.) I'd been seeing my therapist about a year at that point. For me, email seems less intrusive than a phone call. I think I did call him once shortly after I started with him but didn't leave a voice mail that time.