You should start by creating your developer account on the Truecaller Developer portal here: https://sdk-console-noneu.truecaller.com/sign-up
a) Register with email ID and set a password.
b) Verify your email ID to proceed.
PS: The developer portal link shared above is only for registering android apps, if you are looking to do the integration in Mobile Site, iOS or any other platform please sign via this developer portal link : https://verification-sdk-console.truecaller.com/sign-up
We recommend you to create your account with a team generic email ID, instead of a personal email ID.
For example: Use techteam@truecaller.com or android@truecaller.com, instead of john.doe@truecaller.com.
In case you do not see the account verification email in your Primary Inbox, please do check for the same in your Other and Spam email inbox as well.
If you already have created your developer account, please login here.
To reset your account password, please request for it here.