H1B时间线 并且请问email receipt notice可以用来入职吗

Timeline for h1b transfer

• Initiation Oct 1
• questionnaire submitted Oct 1
• LCA filed Oct 5
• LCA cerfiied Oct 15
• H1B filed OCT 18
• Email receipt notice received with receipt number Oct 20
  

（btw 之后的timeline会持续更新）

lz准备拿到receipt notice就辞职给2weeks notice 但是现在的receipt notice是一个email receipt 上面有receipt number 然后查询的状态是 Case Was Received and A Receipt Notice Was Sent
虽然大概率等到真的入职的时候应该会approval 但是想问一下如果worst case发生了 一直pending的话 我可以用这个email receipt notice入职吗 还是必须要等到纸质版的receipt notice 提前谢谢大家！