To improve the performance of the mailing editor, from now on only 50 most recently edited mailings will be displayed. You can see older mailings by clicking on Load 50 more. This way you can get access to all older mailings through multiple reloads.
Benefits for you: You always have your latest mailings in view. All mailings are included when you search, sort and filter your mailings (not just the first 50).
In general, you benefit from a higher performance and shorter loading times in the mailing overview.
