Sellf is a personal mobile CRM platform designed for sales professionals, freelancers, and small teams to streamline sales productivity and business management. The application bridges the gap between complex enterprise CRM systems and basic DIY solutions by offering an all-in-one platform with automated data collection from integrated services. Key features include activity reminders, performance monitoring, goal tracking, and intelligent insights to help users focus efforts effectively. Sellf is available across iPhone, iPad, Android, and web platforms, emphasizing ease of use combined with CRM functionality. Signal Plug searches live against sellfapp.com's mail server to find and verify email addresses for any Sellf employee.
Signal Plug searches live against sellfapp.com's mail server — not a static database. Get a verified email for any Sellf employee with confidence score in under 2 seconds.
94% accuracy · No credit card required · 10 free searches/month
Sellf is a personal mobile CRM platform designed for sales professionals, freelancers, and small teams to streamline sales productivity and business management. The application bridges the gap between complex enterprise CRM systems and basic DIY solutions by offering an all-in-one platform with automated data collection from integrated services. Key features include activity reminders, performance monitoring, goal tracking, and intelligent insights to help users focus efforts effectively. Sellf is available across iPhone, iPad, Android, and web platforms, emphasizing ease of use combined with CRM functionality.
Competitive Advantage
Sellf emphasizes a 'personal mobile CRM' positioning, distinguishing itself from traditional enterprise CRM vendors by focusing on individual sales professionals and micro-teams. The product design prioritizes mobile-first accessibility across all major platforms (iOS, Android, web), reflecting the modern sales professional's mobile work style. Sellf's data integration approach automatically enriches CRM records from connected services, reducing the manual data entry burden that plagues traditional CRM adoption.
The most commonly verified format at Sellf:
Low ConfidenceSignal Plug tests all common patterns against Sellf's live mail server and returns whichever passes the SMTP check.
Run a live search for Sellf →Data-driven signals to help you prospect Sellf effectively.
Sellf targets individual sales professionals, solo freelancers, and small business teams (1-50 employees) who need lightweight, mobile-first CRM without enterprise complexity. Organizations and recruiters seek Sellf users and salespeople who prioritize productivity, mobile accessibility, and simplified workflow management over advanced customization features.
Primary Contact
Sales professionals
Tuesday–Thursday, 9am–11am
Signal Plug performs live SMTP verification against sellfapp.com's mail server — not a static scraped database — which means results reflect the real, current state of Sellf's email infrastructure. Here's how to run a lookup:
Create a free account
Sign up at Signal Plug in under 30 seconds. No credit card required. The Free plan includes 10 searches per month so you can test the tool with real Sellf contacts before upgrading.
Enter the contact's name
Type the first and last name of the Sellf employee you want to reach. Signal Plug handles all seniority levels, from C-suite to individual contributors.
Enter the domain
Use sellfapp.com. Signal Plug tests all common naming patterns automatically and returns only the format that passes the SMTP check.
Get a verified result
Signal Plug returns an email address with a confidence score (0–100) and deliverability status (Valid, Risky, or Catch-all) within 2 seconds. The confidence score tells you how reliable the result is before you use it.
Export and use
One-click CSV export lets you bring Sellf contacts into Salesforce, HubSpot, Outreach, Lemlist, or any other tool in your stack. Growth and Scale plan users can run bulk lookups across an entire list of Sellf names in a single batch.
Sellf competes directly with Salesforce, Pipedrive, HubSpot and others in the Technology space.
| Company | Size | Tier | Focus | Email Format |
|---|---|---|---|---|
| Sellf | Customer Relationship Management (CRM) | firstname.lastname | ||
| Salesforce | — | — | — | firstname.lastname |
| Pipedrive | — | — | — | firstname.lastname |
| HubSpot | — | — | — | firstname.lastname |
| Freshworks | — | — | — | firstname.lastname |
| Zoho CRM | — | — | — | firstname.lastname |
Whether you're running outbound sales, recruiting, or building a partnership list, these are the roles most frequently contacted at Technology like Sellf.
Based on Sellf's profile, the highest-value contacts for outbound are:
Signal Plug works for any role at any seniority level at sellfapp.com. If you have a name and the domain, you can find a verified email.
How well Sellf fits a typical B2B outbound pipeline, based on available signals.
Moderate Fit
Funnel Fit Score
Most email finder tools pull from static databases of scraped email addresses. These databases go stale as people change jobs and companies update their email infrastructure. Signal Plug takes a different approach: every search performs a live check against sellfapp.com's mail server using SMTP verification. This means results reflect the current state of Sellf's email system — not a cached result from months or years ago.
Signal Plug enriches every result with supporting data: a confidence score (0–100), deliverability status (Valid, Risky, or Catch-all), job title where available, and LinkedIn profile URL. This context helps you prioritize which Sellf contacts to email first and personalize your outreach before you hit send. Plans start at $29/month for 500 searches — no annual contracts or seat fees.
Signal Plug performs a live SMTP check against sellfapp.com's mail server for every query — not a static database lookup. Our platform-wide accuracy rate is 94%. Each result comes with a confidence score (0–100) so you can gauge reliability before using the address.
Free plan: 10 searches. Starter ($29/mo): 500. Growth ($149/mo): 2,000. Scale ($299/mo): 5,000. No company-specific caps.
No. Signal Plug generates and verifies emails in real time via SMTP checks — no static database of Sellf employee emails is maintained.
Yes. Growth and Scale plan users can upload a CSV of names and run bulk lookups against sellfapp.com in a single batch.
Sellf is available on iPhone, iPad, Android, and web browsers.
Sellf is built for sales people, freelancers, and small teams looking to reach sales goals with less stress.
Sellf minimizes manual data re-entry by integrating with services you already use to automatically collect information.
Unlike complex CRM applications, Sellf offers a streamlined, easy-to-use personal mobile CRM specifically for individual contributors and small teams.
Signal Plug searches in real time against sellfapp.com's mail server to find and verify email addresses for Sellf employees. Enter a name, enter the domain, get a verified result with a confidence score in under 2 seconds.
Start finding emails free →10 free searches · No credit card required · Upgrade from $29/month