There are several ways to log in to Spacemail:
You may access your Spacemail account here https://www.spacemail.com/login/
Alternatively, you can log in through the Spacemail Manager > Login.
Click on the Email button in the header menu and then select Spacemail Login.
Login: your Spacemail email address.
Password: the password you copied while creating this Spacemail mailbox.
NOTE: In case of 3 failed login attempts, the mailbox will be locked for 15 minutes. Please wait for 15 minutes and try again.
If that doesn’t help, you can unlock the mailbox by resetting its password through your Spaceship account:
Spacemail Manager > find the Spacemail subscription and the mailbox you need
Click on the three dots next to it > Reset Password.