How are email receivers pressured to allow more mail?

Email marketer from MarketingForum.com explains that upper management, with little understanding of email marketing, often pushes for higher sending volumes, leading to pressure on receivers.

Email marketer from Reddit shares that sales teams often demand more emails be sent to generate leads, overriding deliverability concerns.

Email marketer from Quora explains that internal marketing teams push to send more emails to meet targets, even if it impacts deliverability.

Email marketer from MarketingAgencySite.com shares that pressure to generate more leads drives marketing teams to acquire larger email lists and send more promotional emails, indirectly pressuring receivers.

Email marketer from StackExchange explains that pressure to maintain acceptable unsubscribe rates makes receiver systems accept mails with lower scoring. To not block everything and upset users. If they don't unsubscribe, it may be seen as good, thus allowing more.

Email marketer from Blogspot explains that email systems have to strike the balance between the needs of senders and receivers. Receivers are pressured as they have to keep the end user on-side, whilst blocking spam. The line is constantly moving, so the receivers are pressured to adapt.

Email marketer from LinkedIn explains that fear of being left behind by competitors who are sending more emails pressures marketing teams to increase their sending volume, thus pressuring receivers.

Email marketer from EmailVendorBlog.com shares that pressure to meet revenue targets leads companies to push for more aggressive email marketing campaigns, potentially pressuring receivers by sending more volume.

Expert from Word to the Wise explains that blocking too much email from legitimate senders results in user complaints to the receiver, applying pressure to allow more email through.

Expert from Word to the Wise shares that businesses push for more email sending to meet internal targets and revenue goals, leading to pressure on receivers to accept that volume.

Expert from Email Geeks thinks it would be good for senders to go to sessions that are not about sending, for perspective.

Expert from Email Geeks shares that receivers do get pressured by asshole bosses and their own internal marketing teams to allow more mail.

Expert from Word to the Wise explains that systems are pressured to allow more mail as they look at reputation, and the senders are paying the reputation services, so systems feel compelled to accept them. They want to be seen to be on the senders side.

Documentation from Signal Spam explains that, due to sender reputation scores, systems are pressured to not block everything, but allow mail from legitimate senders. These reputable sender emails need to get through the system, and thus the system cannot block all spam as it may harm the end user.

Documentation from Microsoft answers explains that email systems are pressured not to block mail in case of false positives which leads to customer complaints, so they err on the side of caution.

Documentation from RFC explains that email receiver policies have to adapt to changing standards and legitimate mass mailings, making it difficult to block all unwanted mail without blocking legitimate communications which is a pressure in itself.

Documentation from Google explains that user engagement (opens, clicks) pressures receivers to allow more mail from certain senders because users are actively interacting with it. If users mark emails as important, systems will be pressured to deliver more of those emails.

Documentation from AWS explains that allow listing is often requested by customers. Mail systems are pressured by customers wanting allow listing, and therefore more mail.

Documentation from Spamhaus explains that receivers are pressured to allow more mail from senders with borderline or improving reputations because blocking them outright could lead to complaints from users expecting those emails.