What to expect
Signup sometimes succeeds and then fails at the confirmation step, which is the worst outcome: a half-created account you cannot verify. If you want to browse without an account, do that instead of burning a temporary inbox on a signup that will be checkpointed.
If you decide to try it
- Open the temporary email generator and copy the address that is already waiting.
- Paste it into the signup form for Instagram.
- Watch the inbox — messages appear on their own within seconds of delivery.
- If nothing arrives within two or three minutes, the address was almost certainly filtered. See why websites block temporary email.
The honest caveat
Whatever the verdict above, a disposable inbox expires. If you would be upset to lose the account, register it with an address that will still exist next month. The comparison in temporary email vs email aliases covers the alternative.