<commit_before>class TeacherMailer < ApplicationMailer
  def account_activation(teacher)
    @teacher = teacher
    mail to: teacher.email, subject: "Welcome to Study Buddy!"
  end
end<commit_msg>create instance variable in teacher mailer<commit_after>class TeacherMailer < ApplicationMailer
  def account_activation(teacher)
    @teacher = teacher
    mail to: @teacher.email, subject: "Welcome to Study Buddy!"
  end
end
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