Max number of addresses allowed by mailto link

[mikem4]

Is there a max number of addresses that can be included in a mailto link? Are there any browser/email client limitations on the max number of recipients allowed - especially Navigator and Outlook?

 

[boxplan]

The short answer is yes and no! I have combined about 25 to 30 mailto addresses that work fine from the &quot;send&quot; end of things. However, some ISP's have begun to limit multiple incoming mailto's, a suppose as an anti spam measure. The way to find out is to experiment. How many did you want to include?<br>
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My code looks like this:<br>
<br>
mailto:<A HREF="mailto:friend1@123.com">friend1@123.com</A>,<A HREF="mailto:friend2@456.com">friend2@456.com</A>,<A HREF="mailto:friend3@789.com">friend3@789.com</A> (and so on...)<br>
<br>
boxplan

 

[PeterKV]

Please bear in mind that I assume we're talking about mailto links that will be visible on a webpage somewhere, not mail generated by a submit button on a form on a webpage.<br><br>In case it isn't obvious to you, the number of email addresses that you can pass in a mailto link is ultimately&nbsp;&nbsp;dependent on the email client installed on the system where the mailto link will be activated.<br><br>Some email clients, Eudora Pro 4.0+ for example, will accept and handle mailto links that specify which addressee field that addresses are to go in.&nbsp;&nbsp;The mailto link can send the addresses to the To: field, CC: field, or BCC: field, or some combination of these as well as specifying the recipient and subject of the message.<br><br>Other email client programs just assume that all addresses go in the To: and &quot;ignore&quot; any other instruction embedded in the mailto link.<br><br>Hope this helps<br>Peter Vince<br><A HREF="mailtoeterkv@vaxxine.com">peterkv@vaxxine.com</A><br>

 

[boxplan]

I have used my mailto: with the embedded instruction:<br>?subject=&quot;text string&quot; without any problems.&nbsp;&nbsp;I have not heard from any other users that it did not work with their email client.&nbsp;&nbsp;Do you know which email client(s) will not handle the embedded instructions?<br><br>Thanks,<br><br>Boxplan