If you saved messages in chat and they deleted you but you have not deleted them, the messages should still be there. If you delete that person from your friends (remove them), the chat will disappear. I’m not a fan of this but it is how it works
Since Snapchat messages disappear automatically after a specific time, it doesn’t seem a problem to delete messages on Snapchat. However, there are a lot of users who still have some problems such as how to delete Snapchat chats permanently, how to delete Snapchat messages before people see, etc.If this sounds you, then you have come to the right page. How to Delete Snapchat Messages in 2020? [3 Ways] Confirm your action, by selecting delete chat. (Please note this will not delete the entire chat, just the message you’ve selected) Option 2: Deleting an Entire Conversation. Deleting an entire conversation in Snapchat deletes the entire chat from your device. However, it doesn’t have the same effect on both the sender and recipient ends. Tips on How to Delete Your Snapchat Account Permanently
How to delete your Snapchat account | TechRadar
2020-2-25 · 如何删除Snapchat消息？ 使用“快照历史记录橡皮擦-iMyFone”可以有效安全地删除SnapChat上保存的消息和数据。虽然Snapchat是一个高效的交互式平台，但它也有其自身的缺点，例如，临时文件的积累会占用设备中的重要空间，从而导致设备变得太慢，无法满足您的喜好。
This will clear your Bing search history on this device. You can't undo it.
How to Delete Snapchat Messages in 2020? [3 Ways] Confirm your action, by selecting delete chat. (Please note this will not delete the entire chat, just the message you’ve selected) Option 2: Deleting an Entire Conversation. Deleting an entire conversation in Snapchat deletes the entire chat from your device. However, it doesn’t have the same effect on both the sender and recipient ends.