Best Client Onboarding Software for Agencies (2026): Access Tools vs Portals
Most "best onboarding software" lists mix portals, PM tools, and access tools. Here's the four-job map for agencies—and when AuthHub's one-link OAuth access belongs in the stack.
You searched for the best client onboarding software for agencies. Most results rank Portico-style portals, Asana, Dubsado, Typeform, and Leadsie in one list — as if they solve the same problem.
They don't.
Agency onboarding software is not one product. It usually spans four jobs: platform access (OAuth / partner permissions to Meta, Google Ads, and similar), intake, project coordination, and contracts / e-sign. A branded client portal won't grant Meta Business Manager access. A project tool won't sign the SOW. An access tool won't collect your deposit.
This guide maps the four categories, draws a hard line between portals and access tools, and shortlists AuthHub, Leadsie, and Agency Access for the access job — with pricing verified September 23, 2026. Pick the category that matches your bottleneck first; then pick the tool.
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Agency onboarding software is not one category
What is agency / client onboarding software? Agency onboarding software is any tool that removes a step between signed contract and live work. That usually spans four jobs: platform access (OAuth permissions to Meta, Google, and similar), intake forms, contracts/e-sign, and internal project management. Lists that rank Asana next to Leadsie next to Portico are mixing different jobs.
SERP mindshare for "client onboarding software for agencies" is dominated by branded portals — forms, files, e-sign, payments, magic links (Portico, Onvoy, Valuecase-style listicles). Access specialists (AuthHub, Leadsie, Agency Access) show up when the query leans marketing or ad-account access. Both categories are "onboarding software." They are neighbors, not substitutes.
If campaigns can't launch because Meta or Google permissions are missing, buying another portal will not fix it. If the pain is questionnaires, brand assets, signatures, and deposits in one client login, buying an OAuth tool will not fix it either.
The four jobs of agency client onboarding
Platform access (OAuth / partner permissions)
The step between "contract signed" and "first campaign live." Your account manager needs partner or admin access to the client's Meta Business Manager, Google Ads, GA4, LinkedIn Ads, TikTok Ads, and whatever else the media plan uses. Each platform has its own invite flow, failure mode, and expiry pattern. This is the category most generic listicles bury — and the one that blocks billable work when it stalls.
Intake / information collection
Business details, brand assets, goals, budgets, audiences, competitors. Forms and document portals live here (Typeform, Content Snare, Formstack — and intake fields inside some access tools).
Project coordination
Internal who-does-what after access and intake land. Asana, Monday.com, and similar. Your team already has one. These tools do not grant ad-account access.
Contracts and e-sign
SOWs, NDAs, proposals, signatures. PandaDoc, DocuSign, Proposify. Necessary — and still a different job from OAuth.
Scheduling (Calendly) and automation (Zapier) support the stack. They are not the bottleneck thesis for most paid-media agencies.
Portal tools vs access tools (pick the job first)
| Client portals (Portico / Onvoy / Valuecase-style) | Access tools (AuthHub / Leadsie / Agency Access) | |
|---|---|---|
| Job | Forms, files, e-sign, payments, branded client experience | One-link (or guided) OAuth / partner access to ad & analytics platforms |
| Client sees | Magic-link portal, questionnaires, uploads, signatures | Platform permission screens (Meta, Google, etc.) |
| Unblocks | Docs, deposits, brand assets | Live campaigns and reporting |
| Does not replace | Access management | Full portal / e-sign / payments |
| Buy when | Pain is chasing assets, signatures, and deposits | Pain is chasing Meta Business Manager / Google Ads permissions |
Decision rule: If campaigns can't launch because Meta or Google permissions are missing, buy access first. If the pain is brand kits, questionnaires, signatures, and deposits in one place, buy a portal first. Many agencies eventually need both — but buying the wrong category first is how you end up with a polished portal and still no ad account access.
Category 1 deep dive: access management
This is the category most "best onboarding software" lists skip or bury. It is also where paid-media agencies lose the most non-billable time — chasing invite emails, wrong ad accounts, expired LinkedIn seats, and TikTok QR flows the client does not understand.
AuthHub
What it does: Client OAuth onboarding for agencies. Send one link; the client grants access across featured platforms — Meta, Google Ads, GA4, LinkedIn, TikTok — within an honest 15+ platform set. Request templates can include custom intake fields, so authorization and client context arrive in the same client flow.
What makes it different (honest): AuthHub combines access + intake in one client flow, with flat-rate Starter / Growth / Scale plans, token-health monitoring, Infisical-backed token storage, and audit logs. It is not a full client portal for e-sign and payments, and it does not match Leadsie's long-tail 31+ breadth. We do not claim SOC 2 on this page.
Best for: Agencies onboarding multiple clients per month across core ad/analytics platforms who want predictable monthly cost inside an active-client cap.
Pricing (monthly list; verify on /pricing):
| Plan | Monthly | Yearly effective (labeled) | Active-client cap |
|---|---|---|---|
| Starter | $29/mo | ~$24/mo billed yearly | 5 |
| Growth | $79/mo | ~$66/mo billed yearly | 20 |
| Scale | $149/mo | ~$124/mo billed yearly | 50 |
API + webhooks: Growth + Scale only. Support: US-based (no same-day SLA claimed here). Migration from another access tool: dual-run + re-authorize — no "15-minute free CS migration" promise.
Leadsie
What it does: One-link platform access collection. Positions strongly as client onboarding software for digital marketing agencies — meaning access, not a full portal. Publishes 31+ platforms, including long-tail connectors AuthHub does not highlight (notably WordPress and YouTube on many public lists).
What makes it different: Breadth, Access Detective / Meta-heavy workflows, and credit-based pricing. Each new client that grants manager/admin access typically costs one onboarding credit; busy months can require $50 overage packs.
When Leadsie wins: You need 31+ long-tail integrations, Access Detective or influencer/Meta asset workflows AuthHub does not lead with, or your team/clients are best served in UK/EU hours.
Pricing (public list; verified framing Sep 23, 2026 — confirm on leadsie.com and /compare/leadsie-pricing): $59 / $129 / $299 for 3 / 10 / 50 onboarding credits, plus $50 overage packs. Older "$49 / 3 credits" figures on some pages are stale.
Deep dive: AuthHub vs Leadsie · Leadsie pricing worked examples
Agency Access (agencyaccess.co)
What it does: Access competitor for marketing agencies — automatic / one-link style platform access, intake forms, custom branding, subdomains. Featured platforms include Google, Meta, Shopify, with LinkedIn and others on the broader list. Higher plans add Zapier (7,000+ tools framing on their pricing page).
Honest framing: Do not treat Agency Access as "email-only" or "no guided flow" if you are shopping their current product — clients follow an onboarding link and approve access on official platform screens. Do not call AuthHub "OAuth-only" either: AuthHub's in-link intake is real.
AuthHub differentiators vs Agency Access (typical buy criteria): Infisical-backed token storage + audit trail, token-health monitoring, and flat active-client caps with a clear Starter entry at $29/mo. Agency Access differentiators to respect: their branding/subdomain packaging, Zapier on Premium+, and their own intake + access bundle.
Pricing (agencyaccess.co/pricing, verified Sep 23, 2026 — monthly vs yearly):
| Plan | Monthly | Yearly billed | Clients / mo |
|---|---|---|---|
| Starter | ~$44/mo | ~$33/mo | 5 |
| Premium | ~$99/mo | ~$74/mo | 15 (+ Zapier) |
| Agency | ~$199/mo | ~$149/mo | 50, then custom |
Compare page: AuthHub vs Agency Access
Categories 2–4: intake, project management, contracts
Keep these short — they matter, but they are not the access bottleneck.
Intake forms & information collection
- Typeform — conversational forms, strong UX; forms only. From ~$25/mo.
- Content Snare — agency-native document/info portal with reminders. From ~$29/mo.
- Formstack — advanced forms + docs + e-sign; suite pricing climbs fast (~$83 forms / ~$250 suite).
None of these grant Meta or Google partner access. If you already use AuthHub or Leadsie with intake in-flow, you may not need a second form tool for first-pass onboarding.
Project management
- Asana — default agency PM; from ~$10.99/user/mo.
- Monday.com — visual workflows; from ~$9/seat/mo.
Internal coordination only. The client still needs a separate path for OAuth and usually for signatures.
Contracts & e-sign
- PandaDoc — proposals + e-sign; from ~$19/mo.
- DocuSign — signature standard; from ~$15 personal / ~$25/seat business.
- Proposify — agency-native proposals; from ~$39/user/mo.
Necessary. Still not access management.
Honest evaluation framework
1. Which bottleneck is costing you the most time?
Track one onboarding week. Hours to: chase platform access · follow up on intake · internal tasks · contracts · scheduling. Invest in the category that burns the most non-billable time first. For many paid-media agencies onboarding several clients a month, that is platform access — highest variables, most failure modes, least coverage in generic listicles.
2. How many tools are you willing to manage?
Each tool is a subscription, a login, and an integration to maintain. Minimum viable stack (below) is four. Past ~six tools, integration overhead usually exceeds the gain.
3. What happens when you scale?
Ask: Does price stay flat inside a cap, or do credits/overages compound on busy months? Can AMs self-serve? Do seats explode cost? Flat-rate active-client caps (AuthHub) and credit packs (Leadsie) behave very differently at 10–20 new clients in a spike month — see /compare/leadsie-pricing.
Minimum viable onboarding stack (2026)
- Access (+ intake if bundled): AuthHub or Leadsie (or Agency Access if their packaging fits) — the billable-work blocker.
- Project management: Asana or Monday — you probably already have one.
- Contracts: PandaDoc or Proposify.
- Scheduling: Calendly.
Four tools. One covers the access bottleneck. Add Zapier only after the core handoffs work. Portal products (Portico / Onvoy / Valuecase-style) slot in when you need a branded forms/files/e-sign experience — in addition to, not instead of, access.
Playbooks already on AuthHub:
- Client onboarding checklist
- What client access management is — and why access chase burns non-billable time
- Flat-rate vs credit pricing
- OAuth token management for agencies
Quick-reference comparison
Prices are pre-tax list snapshots verified September 23, 2026. Re-check vendor pricing pages before you buy.
| Category | Tool | Starts at (list) | Solves access bottleneck? |
|---|---|---|---|
| Access + intake (one flow) | AuthHub | $29/mo (5 active clients) | Yes — featured Meta / Google Ads / GA4 / LinkedIn / TikTok; 15+ platforms; Infisical + audit logs |
| Access (credits) | Leadsie | $59/mo (3 credits) | Yes — 31+ platforms; $50 overage packs |
| Access (+ intake / branding) | Agency Access | ~$33–44/mo Starter | Yes — one-link access; intake forms; Zapier on higher plans |
| Portal (different job) | Portico / Onvoy / Valuecase-style | Varies | No — forms / files / e-sign / payments, not OAuth partner access |
| Forms | Typeform | ~$25/mo | Partial — intake only |
| Forms / docs portal | Content Snare | ~$29/mo | Partial — document collection |
| Forms + docs | Formstack | ~$83/mo | No — no ad-platform OAuth |
| Projects | Asana | ~$10.99/user | No — internal only |
| Projects | Monday.com | ~$9/seat | No — internal only |
| Contracts | PandaDoc | ~$19/mo | No — documents only |
| Contracts | DocuSign | ~$15/mo | No — signatures only |
| Contracts | Proposify | ~$39/user | No — proposals only |
| Scheduling | Calendly | ~$10/seat | No — meetings only |
Who should not buy AuthHub
- You need a full client portal (e-sign, payments, asset library) as the primary buy — look at Portico / Onvoy / Valuecase-style products first.
- You need Leadsie's 31+ long-tail set (e.g. WordPress / YouTube) or Access Detective-class Meta workflows AuthHub does not lead with.
- You only need internal PM or contracts — buy Asana/PandaDoc, not an access tool.
- You require a marketed SOC 2 attestation from your access vendor today — we do not claim that here (Infisical + audit logs only).
Agency onboarding software: FAQ
What is agency onboarding software?
Agency onboarding software is any tool that removes a step between signed contract and live work. That usually spans four jobs: platform access (OAuth permissions to Meta, Google, and similar), intake forms, contracts/e-sign, and internal project management. Lists that rank Asana next to Leadsie next to Portico are mixing different jobs.
Which agency onboarding software should I buy first?
Buy for your current bottleneck. If campaigns are blocked waiting on Meta Business Manager or Google Ads permissions, start with access management (AuthHub, Leadsie, or Agency Access). If the pain is brand assets, questionnaires, signatures, and deposits in one client link, start with a client portal. Project tools coordinate your team; they do not grant ad-account access.
How is AuthHub different in this category?
AuthHub is client OAuth onboarding for agencies: one link for featured platforms (Meta, Google Ads, GA4, LinkedIn, TikTok) across an honest 15+ platform set, with in-link intake, flat-rate plans ($29 / $79 / $149, caps 5 / 20 / 50), Infisical-backed token storage, and audit logs. It is not a full client portal for e-sign and payments, and it does not match Leadsie's long-tail platform breadth. We do not claim SOC 2 on this page.
Portal vs access — which do I need?
Portals collect forms, files, signatures, and often payments. Access tools collect platform permissions. If work is blocked on Meta/Google access, buy access first. If work is blocked on missing brand kits or unsigned SOWs, buy portal / contracts first. Many agencies eventually run both.
How much does access-oriented onboarding software cost?
AuthHub monthly list: $29 / $79 / $149. Leadsie monthly list: $59 / $129 / $299 (credits + $50 packs). Agency Access: roughly $33–44 / $74–99 / $149–199 depending on monthly vs yearly billing. A minimum viable four-tool stack (access + PM you already have + contracts + scheduling) often lands near ~$100/mo before seats — verify live prices.
Can I build agency onboarding without dedicated software?
Yes — checklists, manual permission invites, email templates. That path usually burns more non-billable coordination time as volume grows. Software pays for itself when chase-time exceeds the subscription for your real monthly client count.
Closing
Pick for the bottleneck, not the feature count. For most paid-media agencies, the bottleneck that blocks every billable step behind it is platform access. Portals are the right buy for a different job. AuthHub is the flat-rate access + in-link intake option inside an honest 15+ platform set — with Infisical and audit logs, without SOC 2 theater.
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