Instantly vs Lead411

Instantly combines cold email automation with a built-in B2B lead database for sales outreach. Its outreach tools support automated sequences, unlimited sending accounts, warmup on paid plans, mailbox rotation, reply detection, and multichannel outreach. SuperSearch provides access to a database of 450M+ B2B leads, with filters and email enrichment. Instantly Copilot can find leads, generate campaigns and sequences, summarize analytics, and run recurring tasks. The integration marketplace includes HubSpot, Slack, Zapier, RB2B, BetterContact, and Replit. Growth (Outreach) costs $47 a month, billed monthly, and includes unlimited email accounts and warmup, 1,000 uploaded contacts, and 5,000 emails monthly. Its 14-day trial requires no credit card and allows up to two connected email accounts, 250 uploaded leads, and 1,000 campaign emails. Platforms listed include Android, iOS, web, and API. Instantly names agencies, freelancers, enterprise customers, founders, and sales and marketing teams among its use cases.

Lead411 is a B2B contact data and prospecting service with direct-dial data, buyer intent data, technographic filters, and API access. Its Chrome Extension is for browsing LinkedIn and other company websites, and the service integrates with Salesforce, HubSpot, Pipedrive, Outreach.io, and other platforms. Lead411 says its contact data process combines machine learning, human verification, and real-time email validation; it claims 96%+ email deliverability accuracy and a 97% average for optimized verified emails. Direct dials receive human verification and location matching. Most plans offer unlimited lead searches and exports, though some have monthly or yearly limits; unused exports roll over to the next billing cycle. The Pilot plan provides 50 free exports during a 7-day trial. Paid plans start at 49 USD per month. Monthly plans can be canceled at any time; annual-plan options require contacting support. Lead411 says it was founded in 2001 and is headquartered in Boulder, Colorado. It also states that it is a registered data broker under applicable state laws, including Texas law.