Sift vs Alto Lead Flow
Alto Lead Flow (powered by BridgeAI) qualifies leads already inside your Alto CRM. Sift catches website enquiries before they reach any CRM — so only serious, scored buyers make it into your pipeline.
Written by Sift. Alto Lead Flow data based on publicly available information as of May 2026.
Pre-CRM qualification. Sift sits on your website as a chat widget. When a buyer enquires at 11pm Saturday, Sift engages them immediately — asks about chain status, DIP, timeline, budget — and delivers a lead score to your CRM before 9am Monday.
- ✓ Leads land in the Sift dashboard — CSV export, or Zapier / outbound webhook (Growth/Scale)
- ✓ Transparent pricing from £149/month
- ✓ Self-serve — install in 10 minutes
- ✓ Full UK signals: chain status, DIP, buyer schemes, stamp duty
In-CRM qualification. Lead Flow activates on contacts already inside Alto CRM. BridgeAI sets up automated workflows to nurture and qualify leads that your team has already captured and entered into Alto.
- ✗ Alto CRM only — works only on contacts already in Alto
- ✗ Pricing not publicly listed — requires sales contact
- ✗ Managed setup — not self-serve
- ~ UK context: integrates with Alto's contact pipeline
The gap neither tool mentions
Lead Flow works on enquiries that are already in Alto. But how did they get there? Typically, a member of staff received a portal notification, read it, and manually added it to Alto. By that time, the buyer has often already been called by a competing agency.
Sift sits one step earlier — on your own website. When a buyer submits a contact form or starts a chat at any hour, Sift responds instantly, qualifies them fully, and the scored lead lands in the Sift dashboard with full transcript, GDPR consent and contact details. Export via CSV at any time, or connect to 6,000+ apps via Zapier or forward leads to any URL via outbound webhook (Growth/Scale). No empty inbox. No Monday morning backlog.
Full feature comparison
| Feature | Sift | Alto Lead Flow |
|---|---|---|
| Works with Alto CRM | ~ Dashboard + CSV export + Zapier / outbound webhook (Growth/Scale). Native Alto integration on roadmap. | ✓ Yes — native integration |
| Works with Dezrez / Loop / Reapit / Rex | ~ Dashboard + CSV export + Zapier / outbound webhook (Growth/Scale). Native CRM integrations on roadmap. | ✗ No — Alto only |
| Qualifies website visitors (pre-CRM) | ✓ Yes — chat widget on your site | ✗ No — in-CRM only |
| 24/7 instant response | ✓ Yes | ~ Depends on setup |
| Chain status qualification | ✓ Yes — chain-free / SSTC / unknown | ~ Not confirmed in public info |
| DIP / AIP status qualification | ✓ Yes — UK-specific logic | ~ Not confirmed in public info |
| Cash buyer disambiguation | ✓ Yes — proof-of-funds required | ~ Not confirmed in public info |
| Government buyer scheme detection | ✓ Help to Buy, Shared Ownership, First Homes | ~ Not confirmed in public info |
| Lead score (0–100) | ✓ Yes — Hot / Warm / Cold tiers | ~ Qualification workflow — score format unclear |
| SMS + email channel | ✓ Web chat, email, SMS included | ~ Email/SMS outreach via Alto workflow |
| Transparent public pricing | ✓ £149 / £299 / £549 per month | ✗ Not publicly listed — contact required |
| Self-serve setup | ✓ 10-minute install, no sales call | ✗ Managed setup by BridgeAI team |
| Free trial available | ✓ 14-day free trial | ✗ No self-serve trial |
| UK GDPR consent gate | ✓ Built-in consent flow, no data before consent | ~ Relies on Alto's data handling |
| Data stays in UK/EU | ✓ UK/EU infrastructure only | ~ Not confirmed in public info |
Alto Lead Flow capabilities based on publicly available information as of May 2026. "Not confirmed in public info" means we have not found public documentation — it does not mean the feature is absent.
If you're an Alto agency: do you need both?
Website visitor hits your contact form at 10pm
They fill out a property search form on your website. Without Sift, this lands in an email inbox and waits until tomorrow. With Sift, it triggers an immediate qualification conversation — the buyer gets a response in seconds.
Sift qualifies and scores the lead in your dashboard
By morning, the Sift dashboard shows a scored lead with chain status, DIP status, confirmed budget, full transcript and a lead score between 0 and 100 (Hot/Warm/Cold). Export via CSV at any time, or connect to 6,000+ apps via Zapier or forward leads to any URL via outbound webhook (Growth/Scale). Native Alto integration is on the roadmap.
Lead Flow can continue the nurture workflow inside Alto
Once the qualified contact is in Alto (added today via CSV import or manual entry from the Sift dashboard, with native Alto integration on the Sift roadmap), Lead Flow's in-CRM workflows handle follow-up nurturing, viewing booking prompts, and ongoing communication management — exactly what it's designed for.
The verdict for Alto agencies: Sift and Lead Flow operate at different stages of the funnel. Sift captures and qualifies the lead on your website before it enters Alto. Lead Flow manages it inside Alto after entry. They're not mutually exclusive — but if you only fix one, fix the pre-CRM gap first. That's where the 40% out-of-hours enquiries are being lost.
Who should choose what
Choose Sift if you…
- ✓ Are on any CRM (or no CRM) — leads land in the Sift dashboard, ready to export
- ✓ Are on Alto but want pre-CRM website qualification
- ✓ Get enquiries outside office hours and know you're missing them
- ✓ Want to try AI qualification without a sales call or managed setup
- ✓ Want to know the price before you start a conversation
- ✓ Need deep UK buyer signals (chain, DIP, buyer schemes, stamp duty)
Alto Lead Flow may be a better fit if you…
- → Are committed to Alto long-term and want deep native CRM integration
- → Prefer a managed service setup over self-serve configuration
- → Already have strong inbound processes and need in-CRM nurture workflows
- → Are happy with a commercial conversation before seeing pricing
Pricing transparency
All plans include a 14-day free trial with no card required. Alto Lead Flow pricing is not publicly listed — typical of managed services where pricing is negotiated per agency. If you've received a Lead Flow quote and want to compare, our Growth plan (£299/month) is the most comparable tier.
Start qualifying leads on your website tonight
Install Sift in 10 minutes. No sales call. No commitment. See how many out-of-hours enquiries you've been missing.
Frequently asked questions
Does Sift replace Alto Lead Flow?
No — they solve different problems and are designed to work together. Alto Lead Flow manages leads that are already inside your Alto CRM. Sift qualifies buyers on your website before they ever reach any CRM. Sift is pre-CRM; Lead Flow is in-CRM. Most Alto agencies use both as complementary layers.
Can I use Sift with Alto CRM?
Leads land in the Sift dashboard with full conversation transcript, GDPR consent record, lead score, and contact details. Export via CSV at any time. On Growth and Scale plans, leads can be connected to 6,000+ apps via Zapier or forwarded to any URL via outbound webhook. Native integrations with leading UK estate agent CRMs (including Alto) are on the roadmap.
What is the difference between Sift and Alto Lead Flow?
Sift operates on your website — qualifying buyers in a guided conversation before they enter Alto, then pushing structured records to your CRM. Lead Flow operates inside Alto, automating follow-up and workflows for leads already in your pipeline. Sift solves the pre-CRM problem (out-of-hours enquiries, unqualified inbound); Lead Flow solves the in-CRM problem (slow follow-up, manual workflow).
Do I need to choose between Sift and Lead Flow?
No. The two tools are complementary. Sift captures and qualifies buyers on your website; Lead Flow then manages those qualified leads inside Alto. Running both means every part of the buyer journey — from first website visit to pipeline management — is covered.
How much does Sift cost compared to Alto Lead Flow?
Sift is publicly priced from £149/month with a 14-day free trial — no card required. Alto Lead Flow pricing is part of the Alto CRM contract. Speak to Alto directly for current Lead Flow pricing.