How to Send Pictures/Photos By Email
One of the most common uses of email is for sending
pictures/photos.
There are two ways of doing this.
They can be sent either as an
attachment or embedded within the email (HTML only)
To send as part of the message simply insert the picture in the
message at the desired location as shown below (outlook Express):

The insert options allow you to change the size of the image etc.
Alternatively the picture can be sent as an attachment Using
Insert file attachment.
The screenshot below shows the same picture as part of the
message (embedded) and also as an attachment.

Message Size Limits and Pictures
Although sending pictures is relatively easy to do it should only
be done for small pictures/small number of pictures. This is because
standard jpeg photos are large (usually around 2.5Mbytes) and the
Internet will only allow email sizes of approximately 5Mbytes
(varies but good rule of thumb).
Therefore if you send two they may not get through. In general
sending as compressed file doesn't help as they cannot usually be
compressed any more than they already are.
Alternatives to sending by Email
The main alternative method is not to send the picture but to
send a link to the picture. The picture itself can be placed on you
own personal website or you can use a photo sharing service like Snapfish
.
Resources and References: