I think it is helpful to ask upfront how you can reach them, whether it be for appointments or in crisis as you never know what might come up.

Per T, the only way to reach her is by phone but there are options... sometimes she does actually answer (rare), voicemail (more typical), or can select the option to page in an emergency for immediate counseling within an hour. I have used this option once and she did call back in an hour which appreciated her following through as she said she would. This has not always been the case with other T's.