From time to time you send an e-mail using your conventional e-mail client and, suddenly, you get a bounced e-mail as a response.

For example, take this one that I received today in my Outlook inbox:

What people usually do is just ignore and delete this kind of messages, but you should not do that. They contain very interesting information about the causes that lead to it, so you can know why the email get bounced and if this is a temporary or permanent failure among other things. You should look for this information in the body of the message (like in the previous image, surrounded by a red line) or in an attached text file.

The status code always consists in three numbers. They are standard SMTP codes defined under the RFC 1893 document.

As you can check by yourself in that document, for example, my bounced e-mail indicates a 5.1.1 status code, which means the following:

· 5: Permanent Failure
· 1: Addressing status (that’s is, something related to the address)
· 1: Bad destination mailbox address

So, obviously, it's an address that does not exist, although we already know that just looking at the "User unkown" sentence just after it. However not every email server in the Internet behaves in this same standards-compliant way.

Some SMTP servers return codes not totally compliant to the standard RFC and sometimes cause strange errors that can led to confusion. For example, a few days ago I receive a bounced mail with a status of 4.0.0. If you check the RFC you get this meaning for the code:

 · 4: Persistent Transient Failure
 · 0: Undefined Status (it does not give information about the problem)
 · 0: Other undefined Status

So actuality it says nothing at all about the cause, and no SMTP server should return a 4.0.0 code, but there are several of them out there that wrongly do this. For example I checked the full status message for the bounced address and got this response from the server:

      4.0.0:  user over quota

Hey, that's just a crowded inbox, as long as we trust the returned message. But according to the RFC this situation should be it indicated by the standard status 4.2.2 which means specifically that the mailbox is full or over-quota.

I checked other server that returned other "strange" 4.5.2. code, and I got the following message:

      4.5.2: Recipient address rejected: user over quota

Which is a totally wrong code because the meaning of this 4.5.2 is something related to the protocol, no t related to problems with the mailbox:

· 4: Persistent Transient Failure
· 5: Mail Delivery Protocol Status
· 2: Syntax error

Which is a crazy behavior from the mail server.

Normally you should not get 4.0.0 status codes, but if you do normally they are received from very unprofessional emails services, and normally they mean that the address does not exist. Our MAILCast service automatically handle and interpret all this bounced emails, and shows you a classified list of them that you can even export to Excel to do further processing on your own:

Besides the e-mail address that bounced and a short explanation, there is the received status code too (when is a hard bounce), so that you can check its meaning by yourself. We have studied a lot of oddities like the one I describe here to try to guess the real status of misbehaved servers, but it's virtually impossible to have them all correctly interpreted as long as some servers behave in a non-standard way. We're pretty accurate but, when in doubt, you know can see for yourself the meaning of any specific bounced email.

Just check the code in the RFC link above. It's easy!

Interesting video to watch from the german agency Scholz & Friends about changes in the world of marketing since the old golden days and, above all, the raise of the Internet. It deserves to be watched :-)

The eMailing Experience gives you warm greetings in this "back to school," especially to all those who, like me, are still "landing" and reading the mail in our inbox ;-) 

My inbox is full of interesting emails for analyze, what about yours?

We are 100% to continue writting about good tips, new tips and, the best and the worst we found in our Inbox. You will make your e-mail marketing more effective.

Recently I received in my inbox a newsletter. I had not subscribed to it. They asked me to send by postal mail my personal information to unsubscribe. What is this?

First, I do not want to receive their communications ; second, I do not want to spend my money and my time to undo something that I do not do.

I sent them an email asking for my unsubscription and telling that I did not send anything by post. They never send me anything else. I think this is a very, very bad marketing strategy. Why did they want that I receive their newsletter if I will never contract them? In fact, they have created an angry no-customer.

To avoid this kind of situations (and you are identified with this sure) note:

-Try to make that  your recipients give you their information.
-Include an "unsubscribe button" at the bottom of each e-mail you send
-Tell your recipients reply your e-mail to ask for the unsubscription
-Do not ask for difficult things to unsubscribe. Why do you make it complicate? You only will get that check all your e-mails as "spam" 
-Obey the laws that protect your recipients´ information

I think that this kind of situations discredit e-mail marketing and the company that make it. Do not fall into this mistake :-(

The Spanish Association of Electronic Commerce and Marketing (AECEM)  has published a White Paper about Electronic Commerce. The book (in Spanish) deal with interesting online marketing practices.

Whether you have an online store or not, I recommend reading this book. You will see many ideas about how to sell online and communicate your products and services.

Section 6.9 talks about e-mail marketing in a clear and concise way. You will find many useful advices that we expand in The eMailing Experience: databases, open rates, subject line... There are four pages with very specific points to keep in mind the essence of e-mail marketing.

Tell us what you think about the book!

In my last post I was talking about the importance of a good segmented database in e-mail. This is also true for other media too.

Take for instance banners and on-line advertising.

Now, you're probably wondering "Why in earth should I segment my banner advertising?, There is no database in this case...". And probably you'd be right. But if you offer different discounts to different targets you must be pretty sure that you segment the different ads so that they do not show up at the same time in the same portal or webpage.

Take this example I've seen in The daily WTF:

Am I right when I say that you must be careful even with banners? ;-)

Segmenting your database is always important to achieve better results in your campaigns. But sometimes it's even more important due to technology issues.

Maybe you already know it, but recently GMail - the webmail from Google and the one a good share of your subscribers is probably using- has incorporated a new feature to automatically translate emails on the fly. You must add it explicitly to your GMail account through the "Labs" tab in "Settings":

Once this useful feature is finally incorporated to the product by default you'll need to be very careful with the layout issues that will arise.

Expressions/sentences in different languages are normally very different in length, so if your design or layout depends heavily on text you must be careful. If your recipients are translating your mail automatically your design could be easily scrambled.

Take for example this simple e-mail in English:

Click on image to zoom

It contains a headline and some text. The headline uses a quite big text that obviously is intended to fit in a single line.

Let's see what happens when I press the translate link and got my email translated to Spanish:

Click on image to zoom

The headline now uses two lines, and the email is not so beautiful.

This could get much worse on longer phrases and on emails that rely excessively on the size of text fit between images. So take it into account.

If you segment your database well and send contents in the right language to the right people, then -apart from probably getting a much successfully campaign in any conditions- this effect will be minimized.

By the way, the GMail translation plug-in doesn't translate links at this moment. I've reported it through the feedback option and hope that it gets fixed soon :-)

I am going to write about the "Subject" line again, though I have told about it  in many times.

I will not talk about the importance of the subject line to rate opening, or writing, or keywords you must use ... I just going to focus on the size.

 You must focus on one sentence the content of your messages, not write a genuine body of the message in the subject field with full stops, semicolon, punctuation marks .... This never will increase your rate openin. I say it as a person who works in e-marketing and, above all, mainly as a plain e-mail user.

These are real "subjects" in my "Inbox":

• ULTIMAS PLAZAS - PROXIMOS CURSOS XXX XXXXXXXX XXXXXXXXXXX - BANK SIMULATIONS - MADRID - BARCELONA - MAYO - JUNIO - JULIO 2009
• GRUPO XXXXXXXX XX XXXXXXX - JORNADA SISTEMAS DE INFORMACION SAP EN LA EMPRESA - 09.07.2009 - 17:30 HS.
• CURSOS GRATUITOS PARA TRABAJADORES DEL SECTOR XXXXX. NUEVA CONVOCATORIA DEL PLAN FORMATIVO DE XXXXXXXX
• Revista GRATUITA XXXXXXXXXXX - 218 páginas Ya disponible. Viajes, Artículos, Fotografías, Vida marina, Buceo y mucho más. Oferta Maldivas y Mar Rojo Sur.
• NUEVOS SERVICIOS XXXXXXXXX: CENTROAMAERICA-CARIBE-MEXICO-US GULF-USEC Y MEDITERRANEO.
• A la atención del departamento de xxxxxxxxx - Servicios xxxxxxxxxxx de calidad - Especialistas en libros de texto y profesionales
• JORNADA DE PRESENTACIÓN DE LA FERIA INTERNACIONAL DE LA PYME DE CHINA (XXXXXX) EL DÍA 21 DE ABRIL EN XXXXXXXX XX XXXXXXXXXX

Do you want to open some? Why? All the information is in the "subject"  ;-)

This is a post to refresh you the best way to optimize your campaigns by collecting some tips from our previous posts, so you will increase your CTR and ROI and avoid being tagged as Spam:

1 - Don`t use Outlook

Don`t send with Outlook (or similar software), use only professional email marketing software. But if don’t mind what I say and you do, remember that BBC field is your friend.

2 - Align your interests with your recipient’s ones

How? by choosing the right words for the subject and the message to get a closer email.

3 - Optimize your html

Optimize your html, create it with a specific html editor and use the proper image size & formats. Remember, text is text, images are images. Don’t write text into images, don’t send ‘just-one-image’ emails and be sure that your email is comprehensible without images.

4 - Create a killer subscription list

Don’t buy email lists (god kills a kitten each time you do), create yourself recipient's list by including a form into your website and giving incentives to your subscribers.

5 - Don’t send big attachments

Big attachments increase the email weight and will be sent and downloaded slower. Put the attachment in your server and link it, your email’s weight will decrease and you will be able to track who downloads it.

6 – Choose the proper day and hour

Doesn´t exist a perfect day for every case, but Tuesday, Wednesday and Thursday are usual to be the better days, and the period between 10 am and 12 am the better time. Test, test and test to find the better moment to send your campaign.

7 - Read theemailingexperience.com

Subscribe to our RSS and you’ll improve your email marketing skills and will get happiest recipients.

¿Have I forgotten any tip else?

Recently I received in my inbox an invitation to draw for a cruise "only" registering on a website. Like many users, I clicked thinking "a second to lose and maybe win" . The fact is that when I open the link I received the following form:

23 fields to participate!? I am not going to waste my time...

I think many users stop in this moment their check in.

In short, my advice is that if you want to do some kind of e-mail marketing action like this (highly recommended, to increase your recipients), be sure to provide facilities to your target. E-mail, name and surname are enough. Another actions will come to know something about them.

Knowing all the information about your recipients is great, but this is not the way. You can not ask for"blood". You take the risk that the e-marketing action don not get results.