Perplexity occupies an interesting middle ground among AI tools: it is genuinely useful without an account, which makes the signup question less urgent than on platforms that gate all functionality behind a login. When you do sign up, the email-as-authentication model creates the same structural problem as Claude.
Using Perplexity without signing up
Perplexity allows a meaningful number of free searches without any account. For casual or occasional use, this is the cleanest option — no email, no signup, no blocked domains. The limitations are query rate limits, no conversation history, and no access to Pro features. For many users, this is sufficient.
How Perplexity's sign-in works
When you sign up or sign in, Perplexity sends an email containing a magic link. Clicking the link authenticates the session. Each new browser or device requires a fresh magic link sent to the same address. Like Claude, this means the registered email must remain reachable for every future login — it is not a one-time step.
Current blocklist status
Perplexity's disposable-domain blocklist is updated regularly but is less comprehensive than Google's or Meta's. Some established temporary email services are blocked outright; others are accepted at signup but then triggered as suspicious when used from multiple sessions. The acceptance of any particular domain is not stable over time — a domain working today may be blocked after the next list refresh.
Perplexity Pro trials
Perplexity has offered free Pro trials to new users at various points. This is the specific incentive that drives disposable-domain blocklist updates — the trial has real value, and the blocklist is the enforcement mechanism. If a Pro trial is available, expect stricter filtering at that step than for a basic account.
Practical recommendation
For light use: no account needed. For regular use with history: an email alias is the appropriate choice — it keeps Perplexity's emails isolated, remains reachable for future logins, and can be disabled if the marketing volume becomes unwanted. The alias approach is more durable than hunting for a disposable domain that has not yet been added to the blocklist.