No. Any text messages or iMessages sent to you while a contact was blocked are not delivered and cannot be retrieved. You will only receive new messages sent after the unblock.
After their bitter argument over their mother’s will, Lena had done something she’d never done before. She had gone into her Contacts, scrolled to Jake’s name, tapped “Block this Caller,” and watched his face disappear from her Favorites list. Out of sight, out of mind. how to view blocked contacts iphone
“I’m on my way,” she whispered, tears blurring the screen. After their bitter argument over their mother’s will,
If you prefer, you can reach this same list through other system apps. Since Apple uses a unified block list, changes made in one place apply to all: “I’m on my way,” she whispered, tears blurring
If you have blocked someone via the Mail app, their email address won't necessarily appear in the "Phone" settings list mentioned above. You must check the Mail settings specifically.