Does Size Matter When It Comes to Email Marketing?

Does_Size_Matter_Email_Marketing

In terms of email marketing, few things are worse than watching your message end up in the spam folder or bounce back. Unfortunately, sometimes the cause of this isn’t related to a potentially damaged reputation or obtrusive marketing tactics. Instead, it’s something far more manageable and mundane – the size of your content. In fact, ClickZ’s Jeanne Jennings reports that up to 19 percent of emails succumb to deliverability issues during an average campaign.

To avoid this simple, yet debilitating, faux pas, let’s talk a little bit about the relationship between email size and deliverability, as well as what your brand needs to do keep things in order and on target in the inbox. This way, you’ll never have to experience the frustration of an email that either can’t be delivered or rendered on screen by your valued viewership.

Learning When Size Affects Deliverability

Before going any farther, let’s cover the instances that size can – and will – affect the deliverability of your messages. The obvious place to start is with the maximum space offered per message by email service providers. This data limit can vary from platform to platform, but each provider lists the maximum email size online. For instance, Gmail, AOL, and Yahoo stop delivering messages at 25 MB, while smaller services, like Zoho Mail, limit each email to 12 MB. It might seem like a ton of data as you sit at your desk and read this blog, but the reality of the situation is that hitting these limits can be a problem, and it can happen quicker than you think thanks to the rise of image-laden messages.

However, simply staying under these limits is not enough. Some spam filters trigger based on size (capturing messages that stray even over small limits like 100 KB), template rendering, and the file type of attachments – in addition to actual content – so developing messages that work within these confines also comes at a premium for brands that are serious about making an impact in the inbox.

The Other Piece of the Equation

So now that you know just how much size matters, it’s time to chop up your current content and ship it out in a new trimmed and minimalist form, right? Not exactly. As Graham Charlton of Econsultancy explains, failing to give the content in your messages its due, or slipping too far away from this content due to size concerns, can also hinder deliverability. Essentially, when it comes to keeping deliverability rates high, you’re walking a tightrope, balancing size constraints in one hand and the need for desirable and engaging content and imagery in the other. Leaning too far either way is sure to spell disaster for your campaign.

Finding Balance with Your Content

At this point, you’re probably digesting this information and wondering just what it takes to get the best of both worlds in terms of size and content. While there’s definitely some hard work ahead of you, it’s far from an unmanageable task. To start, Christina Galbornetti of Target Marketing magazine suggests aiming for a template that measures between 450 to 500 pixels in width to help keep size concerns to a minimum if you want to target both desktop and mobile viewers. If you’re willing to incorporate two different templates – which is recommended as part of your audience segmentation – consider having one template designed for desktop viewers that sits at the slightly higher end of this spectrum and one on the lower side for mobile viewers.

When it comes to images, Galbornetti goes on to point out that adding these data intensive object for no better reason than to create a flashy message is a bad idea. There’s nothing wrong with imagery in emails, just don’t go overboard. For those graphics you do use, try to limit each image to a size of 20 KB or less. This way, you can avoid the harsh penalty imposed by certain spam filters.

Finally, the Content Marketing Institute’s Jenny DeGraff makes a strong point regarding the role of layouts and calls-to-action (CTAs) in the size debate. Basically, if you can stick to a single column approach, especially on the mobile front, as well as keep your CTAs in an easily visible spot at the top of the message, you’ll put your brand in a good position to blend these two opposing concerns and keep the most important content held within in the limelight while still being cognizant of size concerns. From here, all that’s left to do is watch your deliverability rates go up as the competition still struggles with oversized emails and spam filter problems.

About Victor Green

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