SoFi Technologies, Inc. is an American online personal finance company and online bank. Based in San Francisco, SoFi provides financial products including student and auto loan refinancing, mortgages, personal loans, credit card, investing, and banking through both mobile app and desktop.
SoFi uses direct mail letters to offer home loans to current and prospective customers. This letter is an excellent example of using multiple calls-to-action to engage the reader.
Source: Who's Mailing What!

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UnitedHealthcare Hearing uses a direct mail self-mailer to reach potential patients on their journey to better hearing.

In this Best Direct Mail Campaign example , Kaiser Permanente employs a direct mail marketing self-mailer to reach out to patients on their birthdays.

Exploring the best direct mail campaigns: The USPS used a direct mail marketing offer to reach consumers just in time for the holiday season. Learn more.