Seifert, whose previous best innings in eight internationals was an unbeaten 14 on debut, gave New Zealand a flying start.
His 43 ball innings included seven fours and six sixes.
Tim Southee is congratulated by team-mates after taking a wicket against India in Wellington. They did find it hard to make a clean sweep, however keeping all aside; they are going for an impressive start to the T20 series.
"Kinda amusing when I got told that I'll be opening the innings", Seifert said.More news: India vs New Zealand: T20I Series Schedule, Venue & Match Timings
New Zealand bowlers kept the pressure on Indian batsmen, especially the two spinners, left-arm orthodox Mitchell Santner (2/24 in 4 overs) and leg-spinner Ish Sodhi (2/26 in 3 overs). Stand-in captain Rohit Sharma would like to break these three records in the first T20I if he gets going with the bat.
Shikhar Dhawan blazed away with a quick 29, but five wickets fell for 26 runs in 33 deliveries once he was bowled by Lockie Ferguson.
With the return of Rishabh Pant, the Men in Blue will have three wicketkeepers.
"One of the complete performances you search for".
However, Seifert said he isn't worrying too much about the World Cup. Chasing a mammoth 220-run target for victory, the Indian batsmen failed to show fight against a disciplined Kiwi bowling attack as the entire team was bowled out for 139 runs in 19.2 overs.
Watch the second Twenty20 global between New Zealand and India from 5.55am, Friday on Sky Sports Cricket and Main Event.