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Auto Resize Image Requires Restart

Resizer for inline and attachment images (JPEG, PNG, BMP and GIF image formats).
All platforms are supported (Windows, Linux and Macintosh).

Rated 4 out of 5 stars (61)
266 users

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LookOut Requires Restart

LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

Rated 4 out of 5 stars (158)
1,117 users

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FlexConfirmMail

Confirm mail address and attachments based on flexible rules.

(This project was renamed from "Flex Confirm Mail" to "FlexConfirmMail", due to a branding reason.)

Rated 4 out of 5 stars (11)
23,759 users

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Auto Compress File Requires Restart

Compressor for attachment files. All platforms are supported (Windows, Linux and Macintosh).

Rated 5 out of 5 stars (18)
709 users

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Attach from Clipboard

Create file attachments directly from the system clipboard.

Rated 4 out of 5 stars (27)
5,802 users

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LookOut+ Requires Restart

LookOut is a plugin which allows to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

This version is a fix for Seamonkey 2.*.

Rated 4 out of 5 stars (5)
49 users

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attachment column in search result list Requires Restart

Show the column for attachments in search results list. General search (edit-> search -> search emails) does not show by default if a message has attachments.
This addon adds this column, just as in a normal folder view.

Rated 5 out of 5 stars (2)
159 users

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WarnAttachment

WarnAttachment shows an additional dialog to confirm potentially dangerous attachments. Some attachments like executables etc. are completely blocked. This reduces the risk of malware especially for inexperienced users.

Rated 5 out of 5 stars (12)
3,070 users

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Forward Requires Restart

Add Inline / As Attachment option to Forward button and Message context menu.

Rated 4 out of 5 stars (25)
112 users

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ZNotes Requires Restart

Save everything you like. Simple text notes and pages downloaded from the internet, rich multimedia. Store any files and contacts from your address book with notes.

Rated 5 out of 5 stars (15)
3 users

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WebDAV for Filelink Requires Restart

Adds the possibility to use a WebDAV store for Filelink. With this extension you can link attachments to a WebDAV service, for example as provided by Apache's mod_dav or some public services.

Rated 4 out of 5 stars (21)
81 users

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Sensitive Attachment Guard Requires Restart

A Thunderbird add-on censor sensitive attachments (currently Microsoft Office documents) from being sent to unintended recipients.

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0 users

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Resubmit Requires Restart

(Re)submit multiple messages to a predefined recipient(s)

Rated 5 out of 5 stars (3)
3 users

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Insert Link from Local File Requires Restart

Inserts links from local files via drag and drop on the composition window.

Rated 3 out of 5 stars (3)
20 users

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Attachment Sizes Requires Restart

Ability to see attachment sizes ...

Rated 4 out of 5 stars (57)
2 users

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OrderAtt Requires Restart

OrderAtt allows you to re-order the attachments list.

Rated 5 out of 5 stars (5)
10 users

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Don't Send Linked Files Requires Restart

Prevents sending of linked files if they are file: URLs.

Rated 1 out of 5 stars (1)
0 users

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Attachemnt Encoding Detector Requires Restart

To detect file encoding of attachments, this forces to Thunderbird to use an encoding detector for a specific locale instead of the generic one.

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2 users

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zFiler mail Requires Restart

Automatic conversion from 'plain' attachments to zFiler links, when message is being sent.

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0 users

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Attachment Viewer: view in a tab, slideshow

View attachments in TB
Images, office files, mp3, mp4, text, js
Use Dropbox viewer for 175 file types (in v3)
* Docx, xlsx, pptx, pdf preview
* Slideshow of images
* Zoom/drag
* Rotate/flip image
* Download dialog with thumbnail of image

Rated 4 out of 5 stars (20)
3,902 users

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