keyword

check mail header

Monthly search volume and cost-per-click data for "check mail header" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=check+mail+header&country=us" +--------------+------------------+ | volume | 320 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-07 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
email header analyzer	5,400	$4.21	20/20
email headers analyzer	5,400	$4.21	20/20
header analyzer	2,900	$0	20/20
headers analyzer	2,900	$0	20/20
email header	2,900	$3.57	15/20
email headers	2,900	$7.63	15/20
message header analyzer	2,400	$1.48	20/20
check mail headers	390	$0	19/20
validate email headers	390	$0	15/20
email headers check	320	$0	16/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=check+mail+header&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt