Litmus

What Litmus is

Litmus is an email spam tester tool in the B2B go-to-market stack. In the vendor's own words: “Email Marketing Made Better.” Put plainly, a tool in this category tells you whether a message will be filtered before you send it to a real list.

Where it sits in an outbound stack

Most outbound stacks are four layers: the data that decides who you talk to, the channel that carries the message, the writing that earns a reply, and the system of record that remembers what happened. Litmus sits in the email spam tester layer. Tools beside it are worth comparing on coverage and price; tools in the other layers are worth wiring to it rather than replacing it with.

Using Litmus with M for Mercury

Litmus sits on the email side of the stack. Mercury sits on the LinkedIn side and does not try to be your sending platform — Lead Finder returns a verified work email next to every LinkedIn profile and pushes it straight into Smartlead, Instantly, PlusVibe or EmailBison, so Litmus keeps doing what it is good at while the connection request and the LinkedIn follow-up run in Mercury. One person, both channels, without the two lists drifting apart.

Questions people ask about Litmus

Listed for reference. M for Mercury is not affiliated with Litmus, and no listing here is paid for. Product names and logos belong to their owners.