Opening a new email it is already populate with data

[Judi0840]

When I try to write a new email, it is already filled with a message such as this:

PK!ߤ�lZ
 [Content_Types].xml �(����n�0E�����Ub袪*�>�-R�{V��Ǽ��QU
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l"%3��3Vƃ�ښl	�w%�=���^i7+���-d&�0�A�6�l4��L6
0#�Ò�S
O����X��*��V$z�3��3������%p)O�^����5}nH"d�s�Xg�L�`���|�ԟ�|�P�rۃs��?�PW��tt4Q+��"�wa���|T\y���,N���U�%���-D/
��ܚ��X�ݞ�(��
�<E��)��;�N�L?�F�˼��܉��<Fk�	�h�y����ڜ���q�
i��?�ޯl��i�1��]�H�g��m�@����m���PK!���N_rels/.rels �(����j�0@���ѽQ���N/c���[IL��j���<��]�aG��ӓ�zs�Fu��]��U
��	��^�[��x����1x�p����f��#I)ʃ�Y���������*D��i")��c$���qU���~3��1��jH[{�=E����~
f?��3-���޲]�Tꓸ2�j)�,l0/%��b�

What can I do to stop this from happening?