Need help with Yahoo Mail Pro? - Get started by selecting the device you use Mail Pro on from the dropdown menu on the Mail Help Overview page, above the topics.

Suspicious activity detected while sending email

The "suspicious activity detected" and "account temporarily blocked from sending messages" errors put a hold on your account, preventing you from sending email for a few hours. You'll have to wait for the hold to clear on its own. Avoid this error in the future by limiting these sending habits:

  Doesn't sound like your sending habits? Someone else may be sending email from your account. Find out how to secure a hacked account.