https://www.emailmarketingtipps.de/2012/09/27/split-test-email-signups-doubled-and-bounces-reduced-at-the-same-time/ 2012-09-27T10:59:58+00:00 monthly 0.2 https://www.emailmarketingtipps.de/2012/09/19/cinemagraph-videos-new-inbox-trend-heres-a-quick-way-to-create-one-for-your-newsletter/ 2015-03-04T12:27:20+00:00 monthly 0.2 https://www.emailmarketingtipps.de/2012/09/04/history-of-spam-fun-video/ 2012-09-04T08:16:57+00:00 monthly 0.2