So you need to have another e-mail address that you will receive your forwarded pay2send mail in. I don't really have a reccomendation at this time: hotmail and yahoo are both very very popular, the author of pay2send tests everything against zwallet.com MLM webmail which promises to give its users a slice of the fees it charges for displaying advertisements around their mail.

E-mail sent to pay2send.com addresses must pass several checks and tests otherwise it is returned to the sender.

• The sender must be known to the RAPNAP system, or listed as a wildcard whitelist entry. Return addresses that look like listserv variable envelope return paths are not subject to the RAPNAP checking.
• Mail from whitelisted senders is forwarded immediately
• Mail from whitelisted listservs is forwarded immediately
• Every pay2send associate may maintain a list of public passwords. When a message for you arrives that contains one of your passwords in it, in either the header or the body, the message is forwarded to you, and a password match report is generated and sent to you too. Password match reports contain hypertext links in them that can be used to add senders or listservs to your whitelist. this means that you can make up an impossible password, like "pimlkjnerwgtpoin," and include it in an introductory e-mail you send to all your friends you wish to whitelist. When your friends write back, quoting your message, the password will match, and you will be able to add your friend to your whitelist easily.
• When signing up for a mailing list to be delivered through pay2send, first declare the name of the mailing list as a password. That way, the messages from the listserv that verify your identity will be allowed through, as will the mailing list messages. Each message will generate a password match report, that can be used to add the listserv to your whitelist; then you can disable the password when you have whitelisted your mailing list.

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