HTMail pays you 24 cents to read e-mail & fill out a short survey. Tops rates of any PTRE.
RefRewards pays between 3-10 cents per e-mail with one lucky member per mailing taking a $5 pay rate through random draw. Plus points e-mails...paid to signups...paid startpage VERY soon...among other initiatives. Rapidly growing company.
If you're not a member of either of these yet...give them a shot.
The TOP Two.