Contact Us

Have a question? Our experienced team is happy to help.


Contact Us

Have a question? Our experienced team is happy to help.

Customer Service Center Hours

Mon – Fri: 7:30am – 7:00pm PST
Sat: 9:00am – 1:00pm PST

Debit Card – 24-Hour Hotline


By Mail

P.O. Box 1930
Porterville, CA 93258

Sierra Telebanking


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Quick Message Center

Confidential information such as bank account numbers or passwords SHOULD NOT be included in this form. All fields required.

Need to send something securely? Access SecureMail HERE

SecureMail Message Center

Bank of the Sierra’s SecureMail Message Center is a safe and convenient way to transmit sensitive information digitally. This encrypted messaging portal allows the secure transmission of personal information such as:

Account numbers

Tax ID numbers

Any nonpublic personal information

Standard internet email is sent using “plain text,” which means it’s possible for interested parties, with a little effort, to access the information you send. Because of this, sensitive information should only be sent using secure, encrypted channels.

Messages sent using SecureMail are stored in a secure data center. We send you a message to your email address letting you know when you have a SecureMail message. All you need to do is click on the link in the message and log in to your SecureMail inbox. If you don’t have a SecureMail account, you will have the option to register for one.

Before using Bank of the Sierra SecureMail, you need to create an account. Enter your email address and choose a secure password. A confirmation will be sent to the email address you provide. Simply click the link that is included in the message to complete the setup process.

We’ll always send you a notification via standard email when you have a message in your inbox. Simply log in using your email and password to access your inbox. Once there, you’ll be able to download the message if you need or conveniently send a secure reply. Compose a new SecureMail message by clicking the “compose” tab.

It’s simple, fast, and most importantly, secure.