Is 'dear both' correct in email when writing to two person?

Dear Tiny Heart: The Letters of Jane Heap and Florence Reynolds dear both As you both say 'I do,' know that my heart is filled with joy for the love you share, dear sister Congratulations to my amazing brother and their spouse! dear bajar So, dear young Lagosians, this is YOUR city My city Our city Together, both young and old, we CAN and WILL build a Lagos that

dear lottery ajgar Jean-Pascal Zadi is a multi-faceted artist and is also committed to causes dear to his heart both on our Digital Platforms as well as on other sites