Adventures in Mobile Marketing

Encoding Images vs. Linking Images

Great test & article by Ron on Email Marketer’s Club, Tamara Gielen’s community for Email Experts (join!).

He did some tests on whether encoding- including the image source in an email using base 64- would avoid the image blocking of popular email clients. The result? They are still blocked.

I’ve heard this solution for years now, on various comments on blogs. I’ve never recommended it. I have an unproven suspicion report from Ron, below in the comments, that it increases the file size, which sets off all of these spam alarm flags, and makes it inconvenient for your subscriber base. I also don’t recommend crafty technical tricks to avoid spam filters.

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Written on Thursday, 10. July 2008 at 09:53 In the category images off, other_blogs, techniques. Follow the comments via RSS here: RSS-Feed. Read the Comments. Trackbacks- Trackback on this post. Share on FriendFeed

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2 Comments »

  1. Anna — to an order of magnitude!

    The basic XHTML file with the single linked image is 110 bytes. The same file with the single base64 encoded image is 1,230 bytes!

    Comment: Ron Blaisdell – 10. July 2008 @ 10:23 am

  2. Thanks Ron!

    Comment: banane – 10. July 2008 @ 3:43 pm

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