[KamperKen]

"While Krakatoa and Pompeii eruptions were more famous and deadlier, Pinatobu released the most volcanic ash and volume in recorded human history."

I believe the largest volume of material ejected in the past 1500 years or so was the eruption of Mt Tambora in 1815. It was estimated to be a VEI 7 eruption.

Per this list Pinataubo was a VEI 6 (yeah, I know, it's Wikipedia)

https://en.wikipedia.org/wiki/Volcanic_Explosivity_Index#Lists_of_large_eruptions

[Extremely Extreme Extremist]

I believe the largest volume of material ejected in the past 1500 years or so was the eruption of Mt Tambora in 1815.

Key word is "recorded." There was very little records kept of that explosion. So, Pinatubo remains the G.O.A.T. in terms of volcanic ash volume vomited.

[11th_VA]

... Mt Tambora in 1815

Changed history - 1816 had cold summer, starvation, etc. Affected migrations in US as well. New Englander’s began migrations to Midwest

[crz]

Laki most likely killed more people than all those combined.

Like this one, Laki was a fissure eruption. It lasted from June 1783 till Feb 1784. Pumped so much gas into the air it cause sulfur dioxide fogs worldwide.

Iceland is infamous for fissure eruptions. The ground simply splits apart from the shifting plates and they keep going and going and going on and on and on.