browser - How are cookies handled by email clients? -

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let's set cookie on image request in email (so cookie set when user views images in email). if user clicks through email browser opens, browser have access cookie set?

obviously, if user has outlook email client , firefox default browser, email cookie (if exists) not accessible. if use ie? on iphone or android phone, happens?

i think answered own question...

it's client-side problem (for you). it's "catch catch can". no guarantees combination use 100% fool-proof.

outlook safari (or ff, opera, etc). there many variables. not mention 1 of recipients have email client set plain text.

i got best tracking assigning query parameter images links. i've never found solution accounted 100% of emails sent (comparing/tracking view rates afterward).


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