<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>mrmattyboy</author><text>Thanks all for all of the suggestions!&lt;p&gt;For the improvements, I will try get all of them done by tomorrow; they&amp;#x27;ve all been really good!&lt;p&gt;For those of you suggesting alternatives:&lt;p&gt;* If you&amp;#x27;re suggesting them as a sort of &amp;#x27;BTW you can do this as well&amp;#x27;, then awesome&lt;p&gt;* If you&amp;#x27;re questioning &amp;#x27;why did I re-invent the wheel&amp;#x27;, as I&amp;#x27;ve said in other comments:&lt;p&gt;a) Sending mail directly from a machine can be troublesome (lack of ports open, lack of SPF record for sending domain (since it maybe a workstation) etc.)&lt;p&gt;b) I&amp;#x27;ve struggled to find an alternative method (since my original use for this was few and fare between) that I could actually remember.. often looking up how to send mail through curl for example meant reading multiple websites each time and time spent to get it working wasn&amp;#x27;t worth it, whereas I&amp;#x27;ve never had problems remembering &amp;#x27;curl curlmail.co&amp;#x2F;email&amp;#x27; :)&lt;p&gt;Thanks for all the feedback so far and, as with any quick side-project hack, if a single person in a real situation ends up using it and finds it useful, then its served it&amp;#x27;s purpose in my opinion!&lt;p&gt;Thanks</text><parent_chain></parent_chain></comment><story><title>Show HN: Easy-to-use curl command to send email notifications</title><url>https://curlmail.co/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>guessmyname</author><text>It seems that I can unsubscribe everyone like this:&lt;p&gt;&lt;pre&gt;&lt;code&gt;    curl &amp;quot;https:&amp;#x2F;&amp;#x2F;www.curlmail.co&amp;#x2F;unsubscribe&amp;#x2F;EMAIL&amp;quot;
&lt;/code&gt;&lt;/pre&gt;
This may or may not be considered as an attack vector. If I know that someone is using the service, I can “troll” them by unsubscribing their email and they will stop receiving the alerts. A solution to this would be to include a verification code in the “unsubscribe” link that you are sending with the alert. Unsubscribe only if the verification code exists and matches the one associated with the email.</text><parent_chain></parent_chain></comment><story><title>Show HN: Easy-to-use curl command to send email notifications</title><url>https://curlmail.co/</url></story>