How did the woman first try to get in contact with Mark?

Hi, Mark. I’ve been trying to contact you by e-mail, but for some reason you have not responded.(77)This is Julie, the secretary of the Choral Society. I hope you receive this message in time. We’ve had to cancel tonight’s rehearsal at the last minute.(78)If for some reason you don’t get this message tonight, I apologize—there won’t be anybody else at the hall this evening. I hope you understand that our conductor is unable to attend because of some urgent family business,(79)and we’ve decided to postpone the rehearsal until next week. I can’t really give you any more details at the moment, but I’ll let you know in the next few days. See you soon.