Many e-mail messages contain (hyper) links for URLs, typically pointing to
web-addresses (http:/https:) and e-mail addresses (mailto:).
You can “follow” these links in mu4e using M-x
mu4e-view-go-to-url or save them in the kill-ring using M-x
mu4e-view-save-url. The user-interface for these commands depends on whether
you are viewing the message in “plain-text” or HTML-mode:
completing-read / completing-read-multiple)
[1], [2] next to the
link when you invoke M-x mu4e-view-go-to-url or M-x
mu4e-view-save-url, and you choose one in the mini-buffer
You can exclude links using mu4e-view-ignore-links, see its docstring.
By default “no-reply” links are ignored.
E-mail-addresses are handled through browse-url-mail, which (when using
mu4e) means that you are presented with a window to compose a message to
the given address.
For other kinds of addresses, mu4e uses browse-url; the exact
behavior can be configured (see (emacs)Browse-URL); typically this
launches some web-browser, visiting the address.
Both mu4e-view-go-to-url and mu4e-view-save-url also accept a
prefix-argument (C-u), and allow for handling multiple links at
once. You can do so by selecting multiple, separated by some character.
Typically, the separator is a comma, but if there is a comma in one of the URLs,
mu4e picks some other character; the prompt shows which.