Costco email format
Costco mostly uses flast@costco.com, for example jdoe@costco.com. That's 80% of the 142 people we've seen there, 89 of them with verified addresses. Costco uses more than one format, so try the others below too.
- flast@costco.come.g. jdoe@costco.com80%
- firstlast@costco.come.g. janedoe@costco.com11%
- first.last@costco.come.g. jane.doe@costco.com9%
Examples use the made-up name Jane Doe. Verified addresses count three times as much as unverified ones.
About Costco
Shop Costco.com for electronics, computers, furniture, outdoor living, appliances, jewelry and more. Enjoy low warehouse prices on name-brands products delivered to your door
- Industry
- Retail
- Headquarters
- Issaquah
- Founded
- 1983
- Employees
- 316,000
- Website
- costco.com
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Find emails at CostcoEmail formats at other retail companies
- Staples Inc. email formatfirst.last
- JB Hi-Fi email formatfirst.last
- Alo Yoga email formatfirst.last
- Amazon email formatflast
- Patagonia, Inc. email formatfirst.last
- Blackberrys email formatfirst.last
Where this comes from
We note which format a work address follows when we see it alongside the person's name; the address and name themselves aren't kept. Formats change, and some people have addresses that don't follow the company format, so treat this as the likeliest format, not a guarantee. Last updated October 2026.
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