... when tracked, cyan double-check when opened, right in your Sent folder Filters out your own opens, so it's real data Never reads email content just subject and recipient I am solo dev building in public show some supportguys i will post the link whenever it is ready i will take almost a week more ...

... unique constraint at the write layer instead of an application check. the part I keep thinking about is detection, not prevention: how did you actually notice this in the first place, before a customer emailed you? was it a support ticket, a reconciliation job catching the mismatch, or did something alert on it automatically? for a bug that's silent by nature, the detection path feels like the harder problem to design for than the fix once you know what ... ... galdayan @akbar_b @oshylabs @omri_ben_shoham1 @cmumulle for everytime i share some update you guys