Many email providers only accept email attachments up to a specific maximum size-wise. The maximum size limitation is different for most providers and can range from a Megabyte to 20 or 25 Megabytes, supported by email providers such as Yahoo Mail and Gmail.
It is therefor important to have the means to display the size of attachments in an email client prior to sending the email to make sure that the email will not be rejected by the mail server due to size limitations.
Displaying email attachment sizes can also be helpful for users who want to reduce the size of their mailbox.
Attachment Sizes is an add-on for the Thunderbird email client that adds size information to all attachments in the web browser. The file sizes are displayed next to each file so that its usually easy to determine the overall size of all attachments. The total size of all attachments is displayed when hovering the mouse cursor over the attachment area in the email client.
This does however only work when sending emails, not when the email has already been received. But the total size is not nearly as important in that case.
Attachment Sizes is compatible with all Thunderbird 3.x clients. It can be downloaded from the Mozilla Thunderbird add-on repository.
Update: The Thunderbird add-on is no longer necessary, as Thunderbird 3 is now displaying attachment sizes by default. Thunderbird now displays the size of any attachment that you add to an email directly on the screen. It furthermore displays a total size summary on the same page, which should provide you with the necessary information you need to decide whether the email is too big.
The size of attachments is also displayed in the case of received emails. This again includes sizes for each individual file, and the total size of all mail attachments.
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Do you mean the add on called Attachment Sizes version 0.0.5 from the webadres: https://addons.mozilla.org/en-US/thunderbird/addon/878
Sorry link added.
nice one …