A newer mailbox protocol is not a newer deliverability rule.

Answer A newer mailbox protocol is not a newer deliverability rule. RFC 9051 is IMAP version 4rev2. A revision of the mailbox protocol is not a revision of who opted in. The document is RFC 9051, titled Internet Message Access Protocol (IMAP) - Version 4rev2. That is a fact about mail software or about an old specification. It is not a solo ad price, a rank, or proof that a stranger opted in.

Cream stationery and a teal accent on a dark navy desk — A revised protocol is not a revised list.

The note that started this: RFC 9051, Internet Message Access Protocol (IMAP) - Version 4rev2, RFC 9051.

A rented send is one letter to someone else's list. A revised way to reach a mailbox is not that letter, and it is not a new rule about delivery. A seller who cites the revision as proof the mail will be treated better has changed the subject. The subject is the mailbox protocol. Who opted in is untouched. Where a letter lands is not a promise this document makes. Do not hear a deliverability rule in a version name.

When you compare best solo ad vendors, ask which document they think they are quoting. If they are quoting a revision of the mailbox protocol, they are not quoting a list and they are not quoting a deliverability rule. Ask for the list, the sending domain, and the refund line. A vendor who can name those without the version number is talking about the solo. A vendor who cannot is talking about mail software.

What is IMAP version 4rev2?

RFC 9051 is IMAP version 4rev2. A revision of the mailbox protocol is not a revision of who opted in. The document is RFC 9051, titled Internet Message Access Protocol (IMAP) - Version 4rev2.

Version language sounds like progress. Progress in a mailbox protocol is about how a client and a server handle the mailbox. It is not progress in permission. The people who asked, or did not ask, are the same people after you learn the version name. Say that before the pitch gets comfortable. A newer protocol does not reach backward and revise the opt-in. It does not reach sideways and become a deliverability rule. The title is a protocol title. Leave it there.

The letter you rent still needs a named list, a named sending domain, and a refund line. The revision supplies none of them. A buyer who feels safer because the seller said 4rev2 has felt a version. Safety on a solo is the refund line plus the names, not a protocol vintage. A seller who leads with the vintage is hoping the version sounds like care. Care is naming the file. Write the file down.

The mailbox revision is not called a deliverability rule.
Who opted in is not described as revised by the protocol.
The list, the sending domain, and the refund line are on the order.
The version is not used as a price or a rank.

Is a newer mailbox protocol a newer deliverability rule?

No. A newer mailbox protocol is not a newer deliverability rule. That is a fact about mail software or about an old specification. It is not a solo ad price, a rank, or proof that a stranger opted in.

Deliverability is the word sellers reach for when they want the letter to sound inevitable. This document does not make the letter inevitable. It revises a mailbox protocol. Refuse the leap. If the pitch says the revision updated the rules about delivery, the pitch is wrong about the document. You can correct it without insult. The document is about the mailbox. The order is about the list. They can both exist. They are not the same update.

From the seller's chair, do not borrow the version to calm a buyer who asked about placement. You do not have a placement promise to give, and this citation will not create one. Tell the buyer what you can name: the list, the domain, the refund line, the creative. If they wanted a newer deliverability rule, say you do not have one in this document. Buyers remember the seller who declined a fake rule. They also remember the seller who invented one when the version number was handy.

What does the buyer still have to put on the order?

A buyer still has to name the list, the sending domain, and the refund line on the order. A revision of the mailbox protocol does not name who opted in and does not set your price.

Put the names on the order in words. Leave the version in the citation. If a price is higher because the protocol is newer, the price is not following the document, because the document is not a solo ad price. Ask what you are actually paying for. The acceptable answer is a letter to a named list from a named domain, with a refund line. Any answer that starts with the revision is a specification. You can read specifications for free.

Hold safe solo ads sellers to the opt-in question, not the version question. Who asked to be on the list? The revision does not answer. A seller who returns to IMAP version 4rev2 has returned to mail software. Let them. Then ask again about the list. Pay when the list, the domain, and the refund line are the answer. A newer mailbox protocol is still not a newer deliverability rule.