emailrules
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Rules
What changed
Sources
Check my domain
Topic
Provider rules
What Gmail, Yahoo, Microsoft and Apple require, with the numbers they enforce on.
In force
Global · Gmail
Gmail enforces a 0.30 percent spam rate on bulk senders
What is Gmail's spam rate threshold for bulk senders?
In force
Global
Bulk senders must support one-click unsubscribe
What is one-click unsubscribe and is it required?