BT email provides you with a number of facilities. However, if you wish to insert an image into your email which you wish to send via BT Mail, you may have to think of other options. It is not BT mail is lacking in any way, but you happen to have many other options that BT facilitates for your convenience. It is possible to send the image an attachment, but it is not possible to insert the image in a BT email. In this scenario, it is best for you to look at the other options that you have, like linking to photo bucket, or email clients such as Thunderbird.
To insert an image that is inline (jpg) into your BT email, you have to attach the picture to the email. You will a line of buttons, from which you have to choose insert image, which will take you to panel of two options. Here, in the box for image URL, copy the location of the link of the image by right clicking on the descriptor of the image. Copy this link to the URL box, click on OK and you will see the image appear in the body of the email. This email will not present any problem when you send it.
Another option is to use an email client. This implies using and email application or program on your device or computer, like Outlook, Windows Mail or Apple Mail. These email client applications tend t the emails you download on your device itself. Thus you can read them without the need of an active internet connection.
POP3 and IMAP are the technologies or protocols that allow this download of your emails to your device or computer. The recommended is to go with SSL enabled IMAP.