fix: skipping empty email addresses

index.html

@@ -449,10 +449,10 @@ while (await new Promise(o => setTimeout(o, 1000, true))) {
             $('#timezoneLabel').innerText = Temporal.Now.zonedDateTimeISO(locale.timezone).toLocaleString(locale.name);
 
             let { done, skip, email, subject, recipient } = await Rpc2.invoke('progress').catch(() => new Object());
-            let index = done + skip;
             let limit = minor || major - 1;
             let chunk = $('#chunksize').valueAsNumber;
             let total = $('#slice').checked ? Math.min(chunk, limit - chunk * $('#offset').valueAsNumber) : limit;
+            let index = $('#slice').checked ? done : done + skip;
 
             $('#progressLabel').innerText = `${parseFloat(index / total * 100).toFixed(2)}% (${index}/${total})`;
             $('#subjectLabel').innerText = subject ?? '';
@@ -463,7 +463,7 @@ while (await new Promise(o => setTimeout(o, 1000, true))) {
 
             let rate = index / uptime;
             let remaining = index ? Math.floor((total - index) / rate) : 0;
-            $('#remainingLabel').innerText = remaining ? `${Temporal.Duration.from({ seconds: remaining }).round({ largestUnit: 'hours' }).toLocaleString('en')} (${rate.toFixed(2)}/min)` : '';
+            $('#remainingLabel').innerText = remaining >= 0 ? `${Temporal.Duration.from({ seconds: remaining }).round({ largestUnit: 'hours' }).toLocaleString('en')} (${rate.toFixed(2)}/min)` : '';
             break;
         case 'STANDBY':
             $('#send > span.text').innerText = 'Resume';