Keyword Analysis & Research: when was email started

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was email started	1.64	1	4025	40	22
when	0.72	0.6	7034	47	4
was	0.63	0.3	2713	39	3
email	1.28	0.5	6569	53	5
started	0.67	0.2	9665	17	7

Keyword	CPC	PCC	Volume	Score
when was email started	1.63	0.4	3868	97
when was gmail started	0.78	1	5475	95
when was mail started	0.57	0.4	8399	58
when did gmail launch	0.81	0.6	2903	13
when did gmail open	0.64	0.2	5371	4
what year did gmail launch	0.3	0.3	6902	41