Retrieve unfinished email

Hello Plookie410.

Thanks for reaching out to Apple Support Communities. We see that you need help accessing and finishing a saved email draft. We will be glad to assist.

See the following steps:"Save a draft for laterIf you’re writing an email and want to finish it later, tap Cancel, then tap Save Draft. To resume work on an email you saved as a draft, touch and hold , then select a draft."

Save a draft in Mail on iPhone

Hope this helps.

Cheers.