Issues

• After replying to email it is not saved in 'Sent Items'

  Bug

  thunderbird/stormbox#223 · Filter by author vijayphadke opened on Oct 23, 2026
  3

• Custom labels on contacts do not sync to iOS and other phones

  thunderbird/stormbox#221 · Filter by author Sancus opened on Oct 21, 2026
  1

• Missing Addresses in Contacts

  Bug

  thunderbird/stormbox#220 · Filter by author Fritzelspitze opened on Oct 21, 2026
  2

• Character encoding problems in contacts synced to iOS from Stalwart

  Bug

  thunderbird/stormbox#218 · Filter by author Fritzelspitze opened on Oct 20, 2026
  1

• Thundermail Spam Filter Does Not Recognize Emails Forwarded Through Firefox Relay.

  zendesk
  Bug

  thunderbird/stormbox#208 · Filter by author tothemoon214-a11y opened on Oct 12, 2026
  2

  

• Moving an imap email from Thundermail to another IMAP provider e.g. gmail works in TB Desktop but not webmail.thundermail.com

  zendesk
  Bug

  thunderbird/stormbox#207 · Filter by author rtanglao opened on Oct 10, 2026
  2

• Unable to upload images

  Bug

  thunderbird/stormbox#205 · Filter by author marcus-schoeler opened on Oct 5, 2026
  2

• Synchronization of address books between "Thundermail web" and Thundermail in Thunderbird.

  Bug

  thunderbird/stormbox#195 · Filter by author lisardosf opened on Sep 28, 2026
  1

• Inner icon lines don't have rounded ends

  uxweb
  thunderbird/stormbox#189 · Filter by author Sancus opened on Sep 24, 2026

• Compose adds extra padding around lists and indentation

  uxweb
  thunderbird/stormbox#188 · Filter by author Sancus opened on Sep 24, 2026

• Compose header alignment differs from Thunderbird desktop

  uxweb
  thunderbird/stormbox#187 · Filter by author Sancus opened on Sep 24, 2026

• Slash icon in "Filter messages" isn't interactive and will be unfamiliar

  uxweb
  thunderbird/stormbox#186 · Filter by author Sancus opened on Sep 24, 2026

• A single attached image shows inline, without the attachment preview or list

  uxweb
  thunderbird/stormbox#185 · Filter by author Sancus opened on Sep 24, 2026

• Mobile: new segmented button has inconsistent text color

  mobileux
  thunderbird/stormbox#184 · Filter by author Sancus opened on Sep 24, 2026

• Close icons differ between Mail, Appointment, and Send

  uxweb
  thunderbird/stormbox#183 · Filter by author Sancus opened on Sep 24, 2026

• Mobile: From and Subject fields use a different corner radius than To

  mobileux
  thunderbird/stormbox#182 · Filter by author Sancus opened on Sep 24, 2026

• Mobile: contact picker shows keyboard navigation instructions

  mobileux
  thunderbird/stormbox#179 · Filter by author Sancus opened on Sep 24, 2026

• Mobile: Mail's sticky bottom navigation differs from Send and Appointment

  mobileux
  thunderbird/stormbox#178 · Filter by author Sancus opened on Sep 24, 2026

• Indeterminate loading animation is inconsistent across products

  uxweb
  thunderbird/stormbox#176 · Filter by author Sancus opened on Sep 24, 2026

• Mobile: too much space between labels and fields in the compose header

  mobileux
  thunderbird/stormbox#175 · Filter by author Sancus opened on Sep 24, 2026

• Icons appear to be Lucide instead of Phosphor

  uxweb
  thunderbird/stormbox#173 · Filter by author Sancus opened on Sep 24, 2026

• Mobile: Cc/Bcc buttons crowd the To field

  mobileux
  thunderbird/stormbox#172 · Filter by author Sancus opened on Sep 24, 2026

• Mobile: compose dropdowns don't fit their options and switch awkwardly to native pickers

  mobileux
  thunderbird/stormbox#171 · Filter by author Sancus opened on Sep 24, 2026

• Audit touch targets as small as 14×14 px

  mobileuxweb
  thunderbird/stormbox#165 · Filter by author Sancus opened on Sep 24, 2026
  1

• Review error and success message copy

  mobileuxweb
  thunderbird/stormbox#160 · Filter by author Sancus opened on Sep 24, 2026