If when trying to signup your email has been flagged as invalid, mistyped or disposable it means Flatly's email bot has detected that your email is one of the following:
AcceptAll Email Domain (example: anything-can-be-added-here@acme.com)
Disposable (example: Yopmail)
Undeliverable (example: notavalid.email@something.wrong or invalid&@edu.fov)
Flatly requires real email accounts associated with real human individuals to ensure that account-related correspondence and job notifications can function properly.
We recommend signing up with Google or Microsoft to simplify the signup process.