Pop3 servers allow access to messages by index ranging from 1 to n where there are n messages available. When messages are actually deleted (the deletes may be pending) the remaining messages will be reindexed.

Options are: remember how many messages remain on the server after deletions and start at the index following that number, read the message headers only and check the message id's to determine if the messages are new or not (assuming you keep the id's for messages that have been dealt with) or (as you suggest) check the date and times of messages.

DWIM is Perl's answer to Gödel

In reply to Re: Help w/ approach using Net::Pop3 by GrandFather
in thread Help w/ approach using Net::Pop3 by GaijinPunch

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.