1. Check your Internet connectivity

2. Confirm you are entering your email address and password correctly

3. Verify that your email program is configured correctly

4. Make sure your anti-virus software is updated and working properly

5. Check your firewall settings and make sure your email program is not being blocked

6. Check your email account settings and verify that all settings are accurate and up to date

7. Make sure that any relevant limitations to your account (e.g, message size, number of recipients) are not exceeded