Issue Description
Emails remain in Outbox or fail to send.
Common Causes
Incorrect SMTP settings
Sync disabled
Network instability
Step-by-Step Solution
Step 1: Check Internet Connection
Ensure stable Wi-Fi or mobile data
Step 2: Sync Email Account
Settings → Accounts → Email
Enable sync
Step 3: Remove and Re-add Email Account
Fixes authentication errors
Step 4: Update Email App
Install latest version
Explore Further
Test email via web browser
Prevention & Best Practices
Use official email apps.