Troubleshooting
One page per problem, each starting with the answer.
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A DNS record will not verify
What to check when Issue Mint says a record is missing or has the wrong value, in the order the problem usually turns out to be, starting with the Cloudflare proxy.
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A certificate warning on your domain
What to check when a hostname on your domain resolves but the browser warns about its certificate, in the order the cause usually turns out to be.
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Everything verifies except the bare domain
What to check when www and every other record verify but the root of your domain will not, why some providers cannot do it, and what the www address changes.
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Issues are going to spam
What to check when issues land in spam, ordered by how often each cause is the real one, from the from address and the DKIM records to how the list was built.
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The import added fewer people than the file
Where every row of a CSV import ends up, how to see exactly which addresses were refused and why, what the invalid count covers, and which rows are not recorded.
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The open rate looks wrong
Why an open rate reads implausibly high or oddly low, what Apple Mail Privacy Protection does to it, why the figure moves after a send, and what to read instead.
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A reader never got the confirmation email
What to check when a reader never got their double opt-in confirmation, from a mistyped domain and the reader's own inbox to the one reminder and what the form said.
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The extension keeps asking for a code
What revokes an extension token, what the popup does when a request comes back unauthorised, the Chrome cases that lose a token quietly, and how to reconnect.
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