E-Mail
@1488.me
Messages
API reference

This service is probably not very useful for manual use, however it has pretty good API (without any limits)!

It has two major endpoints:

http://mail.1488.me/api/list/<md5 of inbox> to get list of received messages
Example: http://mail.1488.me/api/list/f52ffcffdcc0137284eb812e39d15ce9 for test@1488.me

and

http://mail.1488.me/storage/<md5 of inbox>/<message ID received from /api/list query> to get the received message
Example: http://mail.1488.me/storage/f52ffcffdcc0137284eb812e39d15ce9/9b2854238441fc5cbfa0700f2251cfe7 
for test@1488.me and message with ID of 9b2854238441fc5cbfa0700f2251cfe7

All messages are stored for around 10 minutes. There are no limits at all of using the API.