Signing in, and keeping one account
You sign in with Google or Pera. To use both on one account, link the second from Settings while signed in; signing in fresh with the other creates a separate account.
How do I sign in?
Use Sign in with Google or Sign in with Pera. A Google account whose email address isn't verified is refused. Pera asks you to sign a short message proving you control that wallet; signing it authorises nothing, moves no funds and costs nothing.
If PortMula isn't open to new accounts yet, signing in says so, and no account or wallet is created.
Will signing in another way give me a second wallet?
Yes, unless you link it first. Sign up with Google and later sign in fresh with Pera, or the other way round, and you get a separate, empty account, with no agent or wallet until you set them up there. PortMula doesn't look accounts up by email, and a Pera wallet gives no email address at all. We never merge two accounts on our own: merging on a guess is how someone else could end up inside yours.
To avoid it, sign in the way you did first, open Settings, and add the other method under Ways to sign in. That attaches it to the account you're in. If that method already belongs to another PortMula account, linking is refused, not merged. An account holds one of each, and a linked method can't be removed.
Why only Google and Pera?
Google covers people who don't hold crypto, and Pera covers people who do. Every extra method is another way to end up with two accounts.
Apple and X are left out on purpose. Apple usually hands over a private relay address instead of your real email, and X often gives no email at all, so neither gives a dependable way to recognise you; the likely result is a second, empty account.
What if I lose access to my Google account or my Pera wallet?
If you linked both, sign in with the other one. Either way, the real backstop is the recovery phrase for your agent's wallet.
PortMula creates that wallet and holds its key, encrypted. That is more custodial than a permission you could revoke, not less; exporting the phrase hands you control. Export it from the Wallet page, under Your key, and keep it somewhere private. You can import that phrase into Pera or any Algorand wallet and use it without us.
Do this early: without a way to sign in, the export button is out of reach. A wallet you connect yourself, such as Pera, is yours to recover with its own phrase; PortMula holds no key for it.