Lead pools, not unlimited lists
Instantly Growth caps uploaded contacts at 1,000 total. Smartlead Base holds 2,000 active leads. These are fixed lifetime pools, not monthly resets. Past 25k contacts you are forced to pay $94 to $97 per month.
Workspaces, team roles & agency white-labelGoogle, Microsoft & SMTP
Cold outreach without limits. Unlimited leads, sends, warmups, and Unibox replies.
Stop getting blocked by monthly send ceilings, lead upload caps, or paywalls just to reply to your leads. SignoFast gives you unlimited accounts, unlimited active leads, free automatic email warmup, and a fully featured Unibox to engage and close prospects—all for one simple, flat price per workspace.
4.9/5
Google
MicrosoftSMTP / IMAP
Campaign overview
LiveSent
12.4k
Opens
68%
Replies
14%
Illustrative campaign analytics. Per-campaign and global views in product.
Works seamlessly with your accounts
Google WorkspaceMicrosoft 365SMTP / IMAP
Outreach Tools That Punish You for Growing
Most tools claim to offer unlimited mailboxes and warmups. What they don't tell you is how they cap your leads, limit your monthly sends, restrict warmup features, and paywall your ability to reply to interested prospects.
Outbound stops at send ceilings
Starter tiers automatically cut you off and pause campaigns around 5,000 to 6,000 emails per month. Scaling sends means jumping to high-tier plans before you even add a single teammate.
Read-only inboxes & CRM paywalls
Competitors lock direct two-way Unibox replies behind higher tiers or demand a separate 'CRM' add-on fee just to reply to interested leads. If you don't pay extra, you must log in to 20 mailboxes manually.
There's a better way.
Features
Outreach, deliverability, replies, plus workspaces for teams
Core sending tools in every workspace. Teams & agency features live in their own section below.
Automated Warmup for Every Account You Own
Protect reputation on every account
Protect your sender reputation automatically. Works with Google, Microsoft, and any SMTP account with no manual configuration needed.
Product preview
Warmup ramp active on 24 accounts
Teams & Agencies
Separate clients. One login. Your brand on top.
Run multiple isolated workspaces for clients or brands, invite your team with the right permissions, and hand clients a white-label portal that looks like yours, not ours.
Workspaces
Fully isolated environments for every client or brand
- A fully isolated environment with its own campaigns, leads, accounts, billing, and analytics
- Data is never shared between workspaces
- Each workspace needs its own paid subscription
- All workspaces accessible under one single login
Member roles
Invite the right people with the right access
| Role | Key access |
|---|---|
| Owner | Full access |
| Admin | Everything except billing and ownership transfer |
| Editor | Manage campaigns |
| View / VA | Monitor workspace, manage sending accounts, reply in Unibox |
| Client | White-label portal access only (agency feature) |
Agency & white-label
Your domain, agency name, logo, and colors. Your client experience.
- A branded portal on your domain with your agency name, logo, and colors
- Clients see your brand. They never know SignoFast exists
- No separate plan lock-in. White-label is not tied to a locked subscription tier
- You choose exactly which sections each client can access
Client portal sections you can enable
CampaignsAccountsUniboxAnalytics
White-label is free today. Pricing may change later.
Your Email Provider? We've Got You Covered.
Google Workspace
OAuth
Connect Gmail and Workspace in minutes.
Connect in 2 minutes
Microsoft 365
OAuth
Outlook and Exchange Online supported.
Connect in 2 minutes
Custom provider
SMTP / IMAP
Bring any account your stack already uses.
Connect in 2 minutes
No vendor lock-in. Switch or add accounts any time.
One Plan. No Limits. No Surprises.
One flat price. Unlimited scale. Any email provider. No volume tiers.
Limited-time pricing for customers only. Lock in this rate before it changes.
$39
per monthbilled yearly
Priced per workspace. Unlimited accounts inside each one.
- Google, Microsoft, SMTP/IMAP
- Unlimited active leads
- Unlimited emails
- Unlimited mailboxes
- Isolated workspaces (one subscription each)
- Owner, Admin, Editor, View/VA & Client roles
- Agency white-label client portal
- Warmup included on every account
Most email outreach software tools charge more as your list grows. SignoFast stays $49/mo with unlimited leads and mailboxes. Compare every published monthly tier below.
One plan
SignoFast
Everything included per workspace. One login for all of them.
$39
per monthbilled yearly
Save $120 on yearly billing
Start freeEverything on your plan
- Google, Microsoft, SMTP/IMAP
- Unlimited active leads
- Unlimited emails
- Unlimited mailboxes
- Isolated workspaces (one subscription each)
- Owner, Admin, Editor, View/VA & Client roles
- Agency white-label client portal
- Warmup included on every account
Limited-time pricing for customers only. Lock in this rate before it changes.
Monthly cost at common lead volumes
Every plan from each brand in one view. Lemlist prices are per seat. Competitor lead caps are often fixed totals, not monthly resets.
| Brand | Plan | Monthly price | Lead limit | Email sends | Mailboxes |
|---|---|---|---|---|---|
| SignoFast | One plan | $49/mo | Unlimited active leads | Unlimited emails | Unlimited mailboxes |
| Instantly | Growth | $47/mo | 1,000 uploaded contacts (fixed cap, does not reset) | 5,000 emails/mo | Unlimited email accounts |
| Hypergrowth | $97/mo | 25,000 uploaded contacts (fixed cap) | 100,000 emails/mo | Unlimited email accounts | |
| Light Speed | $358/mo | 100,000 uploaded contacts (fixed cap) | 500,000 emails/mo | Unlimited email accounts | |
| Add-on (Hypergrowth or Light Speed) | +$87/mo each | +25,000 uploaded contacts per add-on | +125,000 emails/mo per add-on | Unlimited email accounts | |
| Smartlead | Base | $39/mo | 2,000 active leads (fixed; delete to free space) | 6,000 emails/mo (resets monthly) | Unlimited mailboxes |
| Pro | $94/mo | 30,000 active leads (fixed) | 90,000 emails/mo | Unlimited mailboxes | |
| Unlimited Smart | $174/mo | Unlimited active leads | 150,000 emails/mo | Unlimited mailboxes | |
| Unlimited Prime | $379/mo | Unlimited active leads | 500,000 emails/mo | Unlimited mailboxes | |
| Lemlist | Email Starter | $39/user/mo | No unlimited lead storage; use campaigns + database credits | 5,000 emails/mo per user | Included senders per seat (see vendor site) |
| Email Pro | $79/user/mo | 200 enrichment credits/mo per user | Higher send limits on platform | 3 senders per user included | |
| Multichannel Expert | $109/user/mo | 400 enrichment credits/mo per user | Unlimited emails/messages per user (fair use on platform) | 5 senders per user included | |
| Outreach Scale | $159/user/mo | Higher enrichment limits; team features | Built for agencies and larger teams | 5+ senders per user; extra mailboxes billed |
SignoFast is one flat plan with unlimited leads, mailboxes, monthly sends, and fully functional Unibox replies (fair use applies). Competitors enforce monthly send ceilings, cap your leads, and lock two-way Unibox replies behind separate CRM add-on monthly subscriptions (like Instantly's separate CRM/Leads product). Prices below are published monthly list rates in USD. Confirm current plans on each vendor site. Sources: Instantly, Smartlead, Lemlist. Instantly also sells separate Leads and CRM products not included above.
How it works
Up and running in under 10 minutes
Four steps from signup to your first send. No implementation project, no deliverability consultant required.
- 01
Connect your email account
Gmail, Outlook, or SMTP. OAuth or credentials in under two minutes.
- 02
Turn on warmup
We ramp volume and engagement automatically so deliverability stays healthy.
- 03
Build campaigns with sequences and variants
Timezone scheduling, tracking toggles, text-only mode, and multiple variants per step included.
- 04
Watch replies land in your Unibox
Every hot lead in one queue. Global analytics show what to scale or cut.
Ready to launch?
Start free. Connect an account and send your first campaign today.
Email outreach software FAQ
Answers for teams evaluating outreach platforms, warmup, and unified accounts.
Email outreach software helps you send personalized messages to prospects at scale while managing deliverability, follow-ups, and replies. SignoFast connects your real accounts (Google, Microsoft, or SMTP), warms them up, runs campaigns with sequences and variants, tracks performance, and routes every reply into one Unibox.
Start Sending Outreach That Gets Replies
No per-account fees. No upgrade walls. Just results.
Start Your Free TrialNo credit card required. Cancel anytime. Setup in 10 minutes.