The bodies are text/plain only, so whether the URL in a verification or
password-reset mail is a link at all was the client's decision. Gmail, Outlook and
Apple Mail linkify plain text; lighter web clients render the body verbatim and leave
the link as dead text — in a message whose entire purpose is that one link.
_send now attaches an HTML part generated from the SAME plain body, rather than
per-template HTML that would have to be kept in sync with it: one converter, all
eleven templates, and text/plain stays the primary part and the source of truth.
Escaping runs before linkification — bodies interpolate untrusted values (a
requester's address, the operator contact) — so no caller can inject markup, and a
query string's `&` is already `&` when it reaches the href, which is what an HTML
attribute wants. Sentence-final punctuation is trimmed out of the href while
url-safe token characters (`-`, `_`) are left alone. Inline styles only, no images,
no external CSS, no tracking.
peter
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