Glossary
Related glossary terms
An email subscriber is a user who has explicitly opted in to receive email messages from a particular sender. Subscribers are added to mailing lists through methods like form signups, app permissions, or checkout flows.
Maintaining a healthy subscriber base is essential to:
Best practices for managing subscribers include:
Mailgun strongly discourages adding users without consent, purchasing lists, or reusing stale data – these practices harm deliverability and violate anti-spam policies.
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| hello.mailgun.com | uvts , __cf_bm | First Party |
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| demo.mailgun.com | _gd_visitor | First Party |
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| mailgun.zendesk.com | _cfuvid, __cf_bm, __cfruid | Third Party |
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| www.mailgun.com | pardot | First Party |
| app.mailgun.com | rl_trait | First Party |
| hello.mailgun.com | visitor_id | First Party |
| mailgun.com | _gat_gtag_xxxxxxxxxxxxxxxxxxxxxxxxxxx , _uetsid , _fbp , _tt_enable_cookie , _ttp , _rdt_uuid , __q_domainTest , _gcl_au | First Party |
| linkedin.com | bcookie, lidc, li_gc | Third Party |
| pi.pardot.com | pardot, lpv830283 | Third Party |
| bing.com | MSPTC, MUID | Third Party |
| hello.learn.mailgun.com | pardot | Third Party |
| pardot.com | visitor_id | Third Party |
| doubleclick.net | IDE, test_cookie | Third Party |
| youtube.com | VISITOR_PRIVACY_METADATA, VISITOR_INFO1_LIVE, __Secure-xxxxxxx | Third Party |
| www.google.com | _GRECAPTCHA | Third Party |
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| youtube.com | YSC | Third Party |