The short version. Signl has one plan to run yourself, Self-serve at $99 a month, and a done-for-you service, Signal Engine at $2,000 a month (founding clients $1,000 a month plus $250 per booked meeting). Self-serve is priced by the number of sources Signl listens to, at a flat price. Everyone a source finds is included and qualified; nothing is charged per person and there are no credits to buy. Collecting likers and finding verified work emails costs us money with third-party providers, so those two have a monthly allowance. When one runs out, only that thing waits until the 1st of the next month.
What each plan includes
As of 22 October 2026. Self-serve is $99 a month, or $79 a month billed $950 a year. It comes with a 30-day money-back guarantee: if it is not for you, email us within 30 days of your first payment and we refund it in full.
| Self-serve $99 / month | Signal Engine $2,000 / month | |
|---|---|---|
| Sources (a search counts as 2) |
25 | Sized to what we run for you, and agreed on the call |
| Fresh posts (their first 2 days) checked | Hourly on up to 15 sources; the rest get a full check once a day | |
| Likers (reactions) collected a month | 2,000 | |
| Verified work emails a month | 500 | |
| Tailored first messages a month (written for the people you pick) |
500 | |
| New posts looked for | Every 3 hours, on the hourly sources | Every 3 hours |
| Seats | Unlimited | Unlimited |
| Send to your tools, autopilot, Slack alerts | Included | Included, and run for you |
| Lead magnets, Companies, Teams | Included | Included |
| Posts written, outreach run, meetings booked | — | Included |
| People read per post, per check (very large posts) |
Up to 500 | Up to 500 |
Need more than 25 sources, or more likers or emails? Managed is sized to you, and we can arrange a custom plan by hand. Talk to us.
Likers, verified work emails and tailored first messages are counted per calendar month. A lookup that finds nothing does not count towards the email allowance.
Both include comments and replies collected from your sources, AI qualification against who you sell to with a reason for each person and a first message for the people you pick, CSV download, the MCP server for Claude and other agents, Your team's posts (one source listening to everyone at your company; it is a search, so it counts as 2 sources), all 9 destinations (Instantly, Smartlead, lemlist, HeyReach, Expandi, HubSpot, Clay, webhook and Slack alerts), autopilot, and the sources Signl suggests from who you sell to.
A source is a LinkedIn profile, post or search, or an X account or search. A search counts as 2 sources because it costs about twice as much to run: a daily search, plus the comments on what it finds. Very large posts are read up to 500 people per check; this is a fair use ceiling, not a charge.
Trying Signl costs nothing: paste a LinkedIn profile into the analyzer on the home page and see who in its audience fits what you sell, with no account. Using the app itself needs a plan.
What is not metered
These cost us nothing meaningful to serve, so they have no allowance:
- People found from your sources and qualified against your ICP, including the people the AI filters out as noise
- Signal searches against our database (
search_signals); live discovery searches that go out to data vendors are capped, see below - Loops: saved recurring searches, and the matches they surface
- The weekly drop of newly funded companies
- Number of connected agents, API keys, and CLI usage
- Re-downloading contacts you have already unlocked
What happens when an allowance runs out
Nothing is deleted, disabled, or charged extra. Allowances run by calendar month and reset on the 1st. Specifically:
- When the likers allowance runs out, likers stop being collected until the 1st. Comments carry on being collected and qualified as normal.
- When the verified email allowance runs out, new email lookups wait until the 1st. People keep arriving and being qualified in the meantime.
- When the first messages allowance runs out, new tailored first messages wait until the 1st. The ones already written stay, and you can still write and edit your own.
- You'll see which allowance ran out, and when it resets, in the app.
- At the source limit, you can pause or remove a source to add another, or talk to us about Managed or a custom plan.
- There is no automatic overage and no per-person charge. If you need more, contact us.
Contact lookups and live discovery
The older contact lookup tools (find_contacts and enrich) and live discovery searches have their own caps, counted per billing cycle; you'll see which limit you reached and when it resets.
Attempts are counted separately because a lookup that finds nothing still costs us money. When you ask for a contact, we search several providers for a verified email address, and sometimes none of them can find one. You are never charged for a failed lookup, but we are still charged by the provider, so the attempts cap stops a very high volume of unsuccessful lookups running up costs indefinitely.
Accounts on an earlier plan
Free, Starter, Scale and Runway are no longer sold. Accounts already on one of them keep that plan's published limits until they change plan or cancel; nothing is reduced without the 30 days' notice below.
Reasonable use
We also ask that you don't:
- Share one account across multiple organisations, or resell access
- Redistribute or resell the contact data itself as a dataset or list
- Automate the service in a way designed purely to exhaust the limits
- Use the data in breach of applicable data protection law (see below)
If we think an account is being used this way, we'll contact you first. We'd only suspend an account without warning where continuing would cause us immediate harm.
Data protection
Signl provides business contact details for business-to-business prospecting. Where we process personal data of individuals in the UK or EEA, we rely on legitimate interests under Article 6(1)(f) UK GDPR. You are an independent controller of any data you export, and you are responsible for your own lawful basis, notice and opt-out handling when you contact those individuals. Deletion requests reaching us are actioned across our systems.
Changes to these limits
If we reduce a published limit, we'll give existing subscribers at least 30 days' notice by email, and you may cancel before it takes effect. Increases apply immediately.
Questions
If anything here is unclear, ask before you buy. Book a call and we'll walk through whether the limits fit your volume.