You can use: Roundcube for sending
Webmail can send maximum within 7 days. If you use it for spamming, it can send inbox 1-2 days before ISP detect and list your IP into Blacklist
Waranty time: 12-hours guaranteed.
Only used for Max-Sending in Yahoo / Gmail / Others; not AOL. You should send to company emails, it will be efficiency
We always check and record video (Inbox Yahoo) before sending to customers. Our Webmail are configured on clear-IP. To sending Inbox, It depends on many elements, you can view some tips: