A comprehensive analysis of various expert, marketer, and documentation sources reveals a consensus: Constant Contact does not separate Apple Mail Privacy Protection (MPP) 'machine' opens from genuine user opens. Constant Contact's official documentation confirms this. This lack of separation results in inflated open rates, rendering them unreliable for accurately measuring campaign performance. The industry-wide impact of MPP is acknowledged, with recommendations to shift focus towards alternative engagement metrics, such as click-through rates, website visits, and conversions, and to employ segmenting strategies to better understand audience behavior.
7 marketer opinions
Multiple sources indicate that Constant Contact does not separate Apple Mail Privacy Protection (MPP) 'machine' opens from genuine user opens. This means that open rates within Constant Contact are likely inflated due to MPP, making it difficult to accurately gauge recipient engagement. Experts and marketers recommend focusing on alternative metrics such as click-through rates, website visits, and conversions to better assess email campaign performance.
Marketer view
Email marketer from Sendinblue warns that Apple’s Mail Privacy Protection will affect open rates. It suggests that marketers should focus on other engagement metrics, such as click-through rates and website visits.
30 May 2025 - Sendinblue
Marketer view
Email marketer from Quora explains that Apple's MPP inflates open rates in platforms like Constant Contact because all emails are opened by Apple's proxy servers, whether or not the recipient actually reads them.
20 Mar 2022 - Quora
4 expert opinions
Experts generally agree that Constant Contact does not filter out or separate Apple Mail Privacy Protection (MPP) 'machine' opens from genuine user opens. While Constant Contact's specific capabilities are a focus, external experts offer insights on the wider impact of MPP on email reporting and provide advice on adapting email marketing strategies to account for inflated open rates.
Expert view
Expert from Email Geeks confirms Constant Contact doesn't filter out MPP opens after checking.
20 Aug 2024 - Email Geeks
Expert view
Expert from Spamresource discusses the potential impact of Apple’s Mail Privacy Protection and suggests ways to measure deliverability in light of Apple MPP. It does not specifically mention Constant Contact's ability to separate opens.
3 Mar 2024 - Spamresource
4 technical articles
Based on documentation from Constant Contact and other email marketing resources, Constant Contact does not separate Apple Mail Privacy Protection (MPP) 'machine' opens from genuine user opens. This means open rates are likely inflated. These resources recommend focusing on alternative metrics like clicks and conversions for a more accurate assessment of campaign performance. Even other email platforms warn of similar MPP inflation within their systems.
Technical article
Documentation from Mailchimp warns that when using Mailchimp your email open rates may be inflated by Apple’s Mail Privacy Protection feature, as MPP loads emails, even if the recipient does not open it.
6 Feb 2023 - Mailchimp
Technical article
Documentation from Litmus shares that Apple Mail Privacy Protection (MPP) can impact open rates, but doesn't provide specifics on whether Constant Contact offers a solution to separate MPP opens. It suggests focusing on other metrics like clicks and conversions to evaluate email performance.
25 Jun 2023 - Litmus
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