Extensions by Name

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notto Requires Restart

Do not send mail to the addresses found into notTo field.

Rated 5 out of 5 stars (5)
0 users

NotTo_Ojx Requires Restart

NotTo allows you to exclude individuals from the recipients list.

Rated 4 out of 5 stars (8)
3 users

Novacoin Antispam Requires Restart

Keep a correspondence with only the well off people.
For donate 4VgkLjNQHDcawXbvuTry3X4V2WEXP66vay

Not yet rated
0 users

nowebsearch Requires Restart

Removes web search feature

Rated 5 out of 5 stars (3)
5 users

NTFNTF

NTFNTF: Notify on This Folder Not That Folder. Choose to enable or disable notifications on a per-folder basis.

Rated 4 out of 5 stars (1)
20 users

NuevaSync Push Email Synchronization Requires Restart

NuevaSync provides push sync services for email and more for iPhone, Android, and other smartphones. This add-on displays real-time sync status in the Thunderbird status bar, and offers easy NuevaSync account setup using your Thunderbird settings.

Not yet rated
0 users

nynorskvg

Byter ut vg med nynorskvg. Vil leggja til fleire sider i framtida.

Switches www.vg.no with nynorskvg.no.

Rated 5 out of 5 stars (1)
0 users

OBM Connector Requires Restart

OBM Lightning Calendar and addressbooks connector

Not yet rated
57 users

ObsidianClipper

ObsidianClipper is a Thunderbird extension to clip emails to the Obsidian notetaking application. Save an email to Obsidian seamlessly with one click. Customize the format of new note titles and note layout.

Rated 5 out of 5 stars (3)
168 users

Old (classic) Icons

This replaces the new monochrome icons with the old/classic colorful icons. Uses the code from Phoenity Icons and the graphics from older Thunderbird versions.

Rated 5 out of 5 stars (26)
2,598 users

Old-style smilies Requires Restart

Reverts the smilies in Thunderbird to those of version 2.

Rated 4 out of 5 stars (1)
7 users

One Click Search Requires Restart

One-click search similar to The Bat! program.

Rated 4 out of 5 stars (18)
0 users

One-by-One Forward Requires Restart

Highlight multiple emails, right-click, then select "One-by-One Forward". This extension will allow you to forward the selected emails, one-by-one, to the recipients you specify using your choice of attachment handling.

Rated 3 out of 5 stars (9)
144 users

One-Click Forward

Forward emails directly through a dropdown of predefined recipients.

Configure recipients in settings. Use the message toolbar button "Quick Forward" to open a dropdown with your recipients and forward directly, or hold Shift to edit first.

Rated 5 out of 5 stars (1)
86 users

onedrivewebapp

Adds browser action icon to toolbar to open OneDribe. See https://thunderbird-essentials.thomas-bandl.de/wordpress/2020/10/04/microsoft-onedrive-button/

Rated 4 out of 5 stars (1)
72 users

Only Minor Update Requires Restart

Applies only minor updates of the application.

Rated 2 out of 5 stars (1)
1 user

OnMail - Quick Access

Quick Access to OnMail in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.

Not yet rated
1 user

Opacus SugarCRM 6.2+ Thunderbird Integration Pro Requires Restart

SugarCRM 6.2.0-8.x/SuiteCRM 7.x Integration for Thunderbird

Enables archiving of emails into SugarCRM and SuiteCRM from Thunderbird. Requires a purchased license key (you can request a trial from within the extension).

Rated 3 out of 5 stars (6)
69 users

Opacus SugarCRM/SuiteCRM Thunderbird Extension Requires Restart

Enables the archiving of emails into SugarCRM/SuiteCRM from Thunderbird 3 and above.

Rated 3 out of 5 stars (14)
200 users

Open Addons Requires Restart

Open Add-ons window with one click.

Rated 4 out of 5 stars (24)
0 users