undeliverable mail returned to sender

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
undeliverable mail returned to sender	0.81	1	6369	56	37
undeliverable	1.19	0.7	4529	5	13
mail	0.31	0.4	6838	97	4
returned	0.91	0.2	8279	31	8
to	0.01	0.3	1249	2	2
sender	1.68	0.4	6852	46	6

Keyword	CPC	PCC	Volume	Score
undeliverable mail returned to sender	0.51	0.4	2801	10
undelivered mail returned to sender meaning	0.09	0.4	7101	90
undelivered mail returned to sender outlook	1.92	0.6	6826	11
undelivered mail returned to sender que faire	0.08	0.4	9288	63
why would mail be returned as undeliverable	1.64	0.6	1120	58
undelivered mail returned to sender trad	1.71	0.8	8677	59
return to sender undeliverable as addressed	0.09	0.9	5974	55
undelivered mail to sender	1.4	0.8	2548	5
usps mail returned as undeliverable	1.83	0.1	3112	38
undelivered mail returned to sender deutsch	1.46	0.8	7131	16