Stannp, Docmail, Paperplanes, Lob and Rockkt are not competitors. They do three different jobs, and buying the wrong one is why most direct mail programmes die after a single campaign.
Declared interest. Rockkt is one of the five. This page has no price table because quotes in this category are volume dependent and the comparison sites that appear to list prices are mostly out of date. Ours are public and on our pricing page.
Thousands of pieces, one design, a data file, and the goal is the lowest sensible cost per piece with decent print. This is a print and postage problem, and UK mailing houses are extremely good at it. Stannp, Docmail and Paperplanes all live here. If this is your job, stop reading comparison pages and get three quotes.
A system sends a letter when something happens: a trial expires, a basket is abandoned, a customer hits a milestone. What matters is the API, the webhooks, address verification and templates you can version like code. Lob is the best known name for this shape of problem. If your buyer is an engineer, this is your category.
A rep has a good call, or spots the right person on LinkedIn, and wants something physical in front of them this week. Nobody has a clean address file. The letter has to be about that one person. And somebody needs to know whether it worked. This is a sales tool, not a print job, and it is what Rockkt is for.
The mistake we see most. A team buys a mailing house to do job three, discovers that everything except the printing is now manual, and quietly stops after one campaign. The printing was never the hard part. Finding the address and knowing what happened next is the hard part.
That list is short, and it is the most useful thing on this page.
Sam works at Rockkt, one of the platforms named here. If you have a current quote from any of the others and are willing to share it, we will publish it with the date and the source. More on how we write these guides.
Address found, letter written, page built, response tracked. Studio Free is five fully worked prospects a month, by invitation.