When sending an email, your signature is applied to the email and is received correctly. However, when the recipient replies to you, you notice that the images in the signature are no longer there or appear as attachments. They are also sometimes replaced with a tag similar to <image001.png>.
Typically, this issue is caused when an iOS device (Apple iPhone or iPad) is being used to reply to an email. The mail client is designed to remove embedded images from the email and replace them with tags, such as '<image001.png>'.
The tag implies that the image has been removed from the email.
Mail clients such as Gmail cause embedded images to be sent as attachments and include them within the email signature.
Unfortunately, as this issue is caused by the device/mail client being used, this is not something we can control.
However, you can stop this issue from occurring by using web-hosted images.
For a more detailed overview on the differences between embedded and web-hosted images, see Embedded images vs hosted images.
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