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Modify Header to Increase Inbox Rate

PostPosted: Sat Mar 07, 2015 11:06 pm
by Osensnolf
Lately I have heard several sites that mention the popularity of Interspire by 'spammers' has caused many others of us to have our messages blocked due to footprints in the header and email that causes ISP's to know that it was sent with Interpsire (and assumed to be spam).

Has anyone revised their Interspire headers to increase their inbox rate?

Even if you do not want to share your change, just mentioning that you have will be appreciated.

Maborak - what is your take on this?


I found this but not sure if it is relevant or maybe it is already built in ... 426&page=2

Re: Modify Header to Increase Inbox Rate

PostPosted: Mon May 11, 2015 7:12 am
by inb0x
I think these are the problematic Headers that gives Interspire a "footprint":

Code: Select all

This can be somehow changed by editing these lines in admin/functions/api/ss_email.php

Code: Select all
      // If this is a header, do header replacement, and return
                if ($header) {
                          $text = str_replace('List-Unsubscribe: <%%HEADER_UNSUBSCRIBELINK%%>', 'List-Unsubscribe: <' . $unsubscribelink . '>', $text);
                        $text = str_replace('X-Mailer-RecptId: %%HEADER_SUBSCRIBERID%%', 'X-Mailer-RecptId: '.$info['subscriberid'], $text);


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                $extra_headers = Array();

                $this->listids = $this->CheckIntVars($this->listids);

                if (sizeof($this->listids) > 0) {
                        $extra_headers[] = 'X-Mailer-LID: ' . implode(',', $this->listids);

                if ((int)$this->statid > 0) {
                        $extra_headers[] = 'List-Unsubscribe: <%%HEADER_UNSUBSCRIBELINK%%>';
                        $extra_headers[] = 'X-Mailer-RecptId: %%HEADER_SUBSCRIBERID%%';
                        $extra_headers[] = 'X-Mailer-SID: ' . (int)$this->statid;

                if ($this->SentBy !== false) {
                        $header = 'X-Mailer-Sent-By: ';
                        if (!is_numeric($this->SentBy)) {
                                $header .= '"' . $this->SentBy . '"';
                        } else {
                                $header .= $this->SentBy;
                        $extra_headers[] = $header;
                $this->extra_headers = $extra_headers;

But I have just no idea, how to remove the lines without crashing anything.

And the Message-ID: part is also problematic because it's including the Interspire Domain - so the "@domain" part needs to be removed but I do not know where.

Code: Select all
Message-ID: <>

So would be great if someone could figure this out because I also want to change these headers.

Re: Modify Header to Increase Inbox Rate

PostPosted: Wed May 20, 2015 4:09 pm
by Osensnolf
Can someone chime in based on the response 'inbox' provided.

I know that many change their headers.

Will spinning the URL help hide the domain in the header?

Re: Modify Header to Increase Inbox Rate

PostPosted: Thu May 21, 2015 10:14 pm
by MaBoRaK

The post from "inb0x" is good because modifying this lines you will remove the Interspire Footprint. BUT ( and its important )

- Interspire will not be able to process the Bounces, because Interspire needs these headers to capture the subscriber,stats, etc

Also, another footprint is:


We we are to remove the links footprint with the Spinning Addon ( URL Masquerade: ) , but we are still working in a way to replace the Headers but still able to be processed by Interspire. So, the idea is:

- replace "X-Mailer-RecptId:" with "ABCETC" then, we need to change all the Interspire engine to take "ABCETC" as "X-Mailer-RecptId:"

connection closed.

Re: Modify Header to Increase Inbox Rate

PostPosted: Fri May 22, 2015 9:27 am
by Osensnolf
Thanks Maborak for chimming in.

Is this something you are working on or do you know if others have been successful with it?

It sounds like this could be a simple fix as long as someone is using your addons. If doing this will increase inbox rates, I encourage you to work on it AAP as that is the most important measurement for all of us. The other addons are important but if we cannot inbox, then the rest does not matter.

Let me know. THanks

Re: Modify Header to Increase Inbox Rate

PostPosted: Wed May 27, 2015 7:14 am
by mmm
If the email is 100% clean showing 10/10 in mail tester, will the mere use of Interspire Email Marketer still trigger some wrongly adjusted spam filters just because they scan for Interspire Email Marketer marks and forget about that it is clean?

Re: Modify Header to Increase Inbox Rate

PostPosted: Thu May 28, 2015 6:11 pm
by Osensnolf
I have tested messages that have a 10/10 with MailTester and they still go into Junk folder. MailTester is a good baseline but so far I have never seen it as an exact estimation of where the message will land in the mail.

Re: Modify Header to Increase Inbox Rate

PostPosted: Thu Jun 04, 2015 3:41 pm
by 1nb0x
Ok, to clean the headers,you just need to remove the lines I posted in my previous post. However, as stated, the bounce management will not work anymore and you will need to do this with another software.

The last problematic header is still the Message-ID field as it uses the current domain (either application URL or the domain you choose in the Spinning Addon).

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Message-ID: <>

Where can I edit this? maborak, could you help?

Also, it is wrong if it just has:

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Message-ID: <3ca4372g007622af87631c004a1ab13f>

It should use either the domain of MAIL-FROM, e.g. MAIL-FROM is, so it will look correctly:

Code: Select all
Message-ID: <>

Can someone make a fix for that? I would pay Paypal/Bitcoin. Contact me via forum PM.

Re: Modify Header to Increase Inbox Rate

PostPosted: Fri Jun 05, 2015 6:08 pm
by Osensnolf
I'd be willing to pitch in if someone can provide an easy solution so that the headers do not have the same footprint they currently have and so that bounce processing still works as it should.

I know that Maborak can do this but I'm not sure why he will not.

Maborak - please respond and show us you are alive and well and care about inboxing. :-)

Re: Modify Header to Increase Inbox Rate

PostPosted: Fri Jun 12, 2015 11:55 am
by mmm
Just to clarify, this whole post here is re sending from your own server, right?

I believe you don't have these problems if you use a 3rd party smtp auth.

Also, last maborak sign of life was June 6th, 2015 ;)