An image-only solo ad is still a message

Answer An image-only solo ad is still a message. RFC 2045 defines how Internet message bodies are put together. The picture is a part inside that structure. It does not replace the headers, and it does not become a different kind of object because the words were flattened into pixels. Ask what else the message contains before you pay.

The note that started this: RFC 2045, MIME Part One, Format of Internet Message Bodies, RFC 2045.

The pitch for an all-image creative is always control. The font will look the same. The button will look the same. Filters that read text will have less to read. That last hope is the expensive one. You did not remove the message. You removed the part a person can read when the picture is blocked, and you kept every header a server uses to decide what the message is. Solo ad pricing should charge for a message the reader can read, not for a poster that might not load.

MIME is the family of documents that starts with RFC 2045. The first part is the format of the body. Messages can have more than one part. A part can be text. A part can be an image. A part can be another message. The specification is how mail systems agree on that structure. A solo seller does not get to opt out of it by exporting a PNG. The PNG still needs a message to ride in, and the message still needs to be acceptable to the next server.

Is an image-only solo ad still an email message?

Yes. RFC 2045 describes how an Internet message body is formatted. An image is a body part inside that message. The headers and the structure still have to be a message a mailbox can handle.

Look at what the inbox actually stores. There is a from-line, a subject, a date, a list of identifiers, and a body. The body may be a multipart bundle with a text part and an image part, or it may be rude and carry only the image. Both are messages. The rude one is still subject to size limits, authentication, and the reader's settings. Calling it a design does not change the type.

This matters when a send fails and the seller blames the creative. Sometimes the creative is heavy. Sometimes the structure is broken. Sometimes the image host is down and the message is a frame around an empty box. You cannot diagnose any of those from a mockup in a slide. Ask for the message the platform will actually submit, or at least for a plain description of its parts.

• The quote says whether a text part exists.
• The image has a stated width and a stated host.
• The subject line still says the offer in words.
• A broken image does not erase the only copy of the pitch.

Does a picture hide the offer from filters?

No. Putting the offer only in an image does not remove the message around the image. Filters and mailbox providers still see a message, and readers who do not load images see nothing you meant them to read.

The old trick assumed filters were a keyword list and readers were a guaranteed set of eyeballs. Neither assumption has been safe for a long time. A message with almost no text is itself a pattern. A reader on a phone with images off is a person staring at a blank card and a subject line. If the subject line is vague, you paid for a blank card. If the subject line carries the whole pitch, you did not hide anything. You moved the words into the one field everyone still reads.

Links hidden inside the image have a second problem. The reader who cannot see the image cannot see the link. The reader who can see it may be clicking a picture of a button rather than a link they can inspect. You wanted a click. You built a click that depends on a file loading from somewhere else. Ask where that file is hosted, and what happens to the send if that host is slow.

What should a buyer ask about an image creative?

Ask for the text version of the offer, ask who hosts the image, and ask what the reader sees if the image never loads. A creative with no readable text is a creative with one point of failure.

The text version is not a courtesy for accessibility alone, though it is that too. It is the copy you can review before the money moves. A picture cannot be diffed in an email. A paragraph can. If the seller will not give you the words, they are asking you to approve a bitmap. Approve words.

RFC 2045 will not write the offer for you. It will remind you that the offer has to live in a message. Build the message so a person can read it when the picture fails. Then the picture can be decoration instead of the whole product.