ActionMailer::MessageDelivery#deliver is deprecated and will be removed

Use ActionMailer::MessageDelivery#deliver_now to deliver immediately.

Author: sferik

app/controllers/reminders_controller.rb

@@ -5,7 +5,7 @@ def create
     @reminder = Reminder.new(reminder_params)
     @reminder.from_user = current_user
     if @reminder.save
-      ThingMailer.reminder(@reminder.thing).deliver
+      ThingMailer.reminder(@reminder.thing).deliver_now
       @reminder.update_attribute(:sent, true)
       render(json: @reminder)
     else