1lookup

Website visitor identification

From $0.01

per identified person (5 credits); $0.02475 on Starter

Website visitor identification

$400 a month billed annually ($500 billed monthly) for 2,000+ identities on Tier 1

opensend.com

2.5¢ per identified person, 90% below RB2B's 25¢

Opensend starts at $500 a month for 2,000 identified people, and 1Lookup starts at $99 a month for 4,000 identified people.

Looking for a Opensend alternative? This page sets Opensend pricing beside 1Lookup, with every Opensend figure taken from its own published pages, checked October 2026.

Start free trial See per-person pricing

7-day free trial, then a short application
You pay only for the people identified

2.5¢
For each identified person
1¢ on Enterprise, 5 credits on every plan
$0
For a visitor we cannot identify
you pay for people, not for traffic
0
Seat fees
your whole team on one account
3 months
Rollover on unused credits
one balance across every product

At a glance

Here is where 1Lookup wins against Opensend, and where Opensend still wins.

Opensend identifies shoppers for ecommerce stores and syncs them into Klaviyo and ad platforms, with tiers set by identities delivered and by the store's monthly traffic. 1Lookup identifies the individual visitor, with a name, work email and LinkedIn profile, at 5 credits for each identified person, and a visitor it cannot identify costs nothing.

1lookupWhere 1Lookup wins

A name, a work email, a LinkedIn profile URL, a job title and a company for each identified visitor, and a phone number for about 1 in 4 people
Month-to-month plans at the listed price, from $99 a month for 4,000 identified people, down to $0.01 a person on Enterprise
You pay only for identified people: a visitor 1Lookup cannot identify costs no credits
The same credits also pay for phone, email and IP lookups, and unused subscription credits roll over for up to 3 months

What it costs

From $0.01

per identified person (5 credits); $0.02475 on Starter

Where Opensend wins

Built for ecommerce: identities sync in real time into Klaviyo, Meta, Google, TikTok and other tools.
Unused credit rolls over, and identities can be capped.
A 14-day trial advertised for $1.

What it costs

$400 a month billed annually ($500 billed monthly) for 2,000+ identities on Tier 1

Short answer

Opensend pricing, as its own page printed it in October 2026: $400 a month billed annually ($500 billed monthly) for 2,000+ identities on Tier 1. Opensend bills for this: each identity delivered, with an included count per tier that is also tied to your site's monthly traffic. 1Lookup charges 5 credits per identified person and nothing for an unidentified visitor, from $99 a month for 4,000 identified people.

1lookupvs

Identify a website visitor for 2.5¢, 90% below RB2B's 25¢.

The same kind of record for each person: name, work email, LinkedIn profile, job title and company, and on 1Lookup a phone number for about 1 in 4 people. A visitor we cannot identify costs nothing.

1Lookup

2.5¢

a person

per identified person on the $99 Starter plan, down to 1¢ on larger plans

RB2B

25¢

a person

per identified person on Pro: $149 for 600, then 25¢ each

90%

less for every person identified

RB2B names US visitors only; 1Lookup names visitors worldwide outside Europe.

RB2B's pricing page says “Contact-level (person) ID is US only” and lists no phone number on any plan. Source: rb2b.com/pricing, read October 2026.

People identified a month

2,500

10012,500

1Lookup$99 a month
Opensend$1,000 a month
RB2B$349 a month

At 2,500 people a month, 1Lookup is $901 a month less than Opensend: 90% less.

Starter at $99 a month covers up to 4,000 identified people (5 credits each). Credits you do not spend on visitors work on every other 1Lookup lookup.

Start free trial

Website Visitor ID requires approval: start the free trial, then send a short application.

What replaces what

Here is which 1Lookup product matches each Opensend job.

Opensend bills for this: each identity delivered, with an included count per tier that is also tied to your site's monthly traffic. 1Lookup counts each identified person, with the contact details included, from a credit balance that also pays for other lookups.

Shopper identification for ecommerce, billed per identity delivered into Klaviyo and ad platforms
Website Visitor ID
The person who visited, identified: name, work email, LinkedIn profile URL, job title and company, by API, webhook or CSV. Billed per identified person, and a visitor it cannot identify costs nothing.
5 credits per identified person, free when a visitor is not identified

Side by side

Both products are measured on the same criteria, using Opensend's own published numbers.

Criteria	1lookup
What you are billed for	5 credits for each identified person. A visitor we do not identify costs nothing.	Each identity delivered, with an included count per tier that is also tied to your site's monthly traffic
Pricing model	Monthly or yearly plans of credits, and the same credits pay for every other 1Lookup product.	Three tiers by identities delivered and site traffic, from 2,000+ identities for sites with 10,000 to 50,000 monthly visitors up to 9,500+; annual billing saves 20%, and Enterprise is priced on a call.
Starting price	$99 a month on Starter, which covers up to 4,000 identified people at $0.02475 each.	$400 a month billed annually ($500 billed monthly) for 2,000+ identities on Tier 1.
Free option	A 7-day free trial on every plan. A visitor we do not identify costs nothing.	No free plan on its pricing page.
How you get started	A 7-day free trial, then a short application: we review each website before we switch on visitor identification.	A 14-day trial, advertised for $1.
Seat fees	None. The whole team works from one account.	Not printed on its pricing page
Do credits expire?	Unused subscription credits roll over for up to 3 months.	Unused credit rolls over.

At volume

This is what Opensend and 1Lookup cost at the same monthly volume.

Opensend counts identified people, which is the unit 1Lookup bills, so each row sets the same number of people side by side. Prices are the published ones, read in October 2026.

Opensend prices are in dollars.

Volume a month

1lookup

Lower price

100people a month
1Lookup
$99 a month
Starter, up to 4,000 people, $0.02475 each
Opensend
$500 a month
Tier 1, up to 2,000 people
1Lookup is lower
250people a month
1Lookup
$99 a month
Starter, up to 4,000 people, $0.02475 each
Opensend
$500 a month
Tier 1, up to 2,000 people
1Lookup is lower
400people a month
1Lookup
$99 a month
Starter, up to 4,000 people, $0.02475 each
Opensend
$500 a month
Tier 1, up to 2,000 people
1Lookup is lower
600people a month
1Lookup
$99 a month
Starter, up to 4,000 people, $0.02475 each
Opensend
$500 a month
Tier 1, up to 2,000 people
1Lookup is lower
1,000people a month
1Lookup
$99 a month
Starter, up to 4,000 people, $0.02475 each
Opensend
$500 a month
Tier 1, up to 2,000 people
1Lookup is lower
2,500people a month
1Lookup
$99 a month
Starter, up to 4,000 people, $0.02475 each
Opensend
$1,000 a month
Tier 2, up to 4,300 people
1Lookup is lower
5,000people a month
1Lookup
$299 a month
Growth, up to 17,000 people, $0.0176 each
Opensend
$2,000 a month
Tier 3, up to 9,500 people
1Lookup is lower

1Lookup is lower

At 1 to 9,500 people a month on month-to-month billing.

Opensend is lower

At no volume on month-to-month billing, against 1Lookup's plans.

Opensend figures from opensend.com, October 2026. Identities delivered into Klaviyo, Meta, Google, TikTok and other tools, for ecommerce sites; unused credit rolls over. 1Lookup figures come from the live rate card.

Set your own monthly volume in the cost calculator

How you buy

This is how you buy from 1Lookup and from Opensend.

1lookup

How it is sold
Monthly or yearly plans of credits, with 5 credits for each identified person and nothing for a visitor who is not identified
What it starts at
$99 a month on Starter, for up to 4,000 identified people
How you get access
Start the 7-day free trial, then send a short application about your website

How it is sold
Three tiers by identities delivered and site traffic, from 2,000+ identities for sites with 10,000 to 50,000 monthly visitors up to 9,500+; annual billing saves 20%, and Enterprise is priced on a call
What it starts at
$400 a month billed annually ($500 billed monthly) for 2,000+ identities on Tier 1
How you try it
A 14-day trial, advertised for $1

A real result

This is what one 1Lookup result looks like.

Add one script to your site
Put the script on the pages where you want visitors identified, such as your pricing and product pages. There is nothing for your visitors to fill in.
We identify the visitors we can, worldwide outside Europe
Each visit from a country outside Europe is matched to a person. A visit we cannot put a name to is dropped, and you are not billed for it.
The person reaches you by API, webhook or CSV
Each identified person is delivered once as flat, structured JSON, or collected into a CSV. Every identified person bills 5 credits.

See the full product page

api.1lookup.ioIdentified

An identified visitor arrives as a person, a work email and the page they were on

Name: Jordan Sample
Work email: jordan.sample@example.com
Phone: +1 415 555 0142
Do-not-call flag: No
LinkedIn: linkedin.com/in/jordan-sample-example
Job title: Head of Operations
Company: Sample Freight Co
Company site: example.com
Page viewed: /pricing

Delivered to your webhook, 5 creditsShow

{
  "identified": true,
  "person": {
    "first_name": "Jordan",
    "last_name": "Sample",
    "work_email": "jordan.sample@example.com",
    "phone": "+1 415 555 0142",
    "phone_do_not_call": false,
    "job_title": "Head of Operations"
  },
  "company": { "name": "Sample Freight Co" },
  "visit": { "page_url": "https://yoursite.com/pricing" },
  "metadata": { "credits_used": 5 }
}

Try the Website Visitor ID Cost Calculator, one of 1Lookup's free tools.

Enter your monthly visitors and see what each tool's published plan costs at that volume.

Open the free tool

The evidence

Here is the evidence behind every number on this page.

1Lookup

Source: 1lookup.io homepage, captured August 2026

Opensend

Source: opensend.com homepage, captured October 2026

Opensend pricing and product facts verified against opensend.com as of October 2026. Prices change, so confirm on the vendor’s site. 1Lookup numbers come from the live rate card.

Who it is for

Pick 1Lookup or stay with Opensend depending on the job in front of you.

1lookup

Choose 1Lookup if

you want the lower monthly bill at 1 to 9,500 identified people a month: a Starter month covers 4,000 identified people for $99, with no charge for visitors that stay anonymous and no fee per seat.

Opensend

Consider Opensend instead if

you run an ecommerce store and want shoppers pushed straight into Klaviyo and your ad audiences: Opensend syncs identities in real time to Klaviyo, Meta, Google and TikTok, and unused credit rolls over.

Questions

People ask these questions before they switch from Opensend.

What is the best Opensend alternative?

If you run an ecommerce store and want shoppers pushed straight into Klaviyo and your ad audiences, Opensend is built for that: Opensend syncs identities in real time to Klaviyo, Meta, Google and TikTok, and unused credit rolls over. If you want the individual person as data, by API, webhook or CSV, at 5 credits per person on a balance that also pays for phone, email and IP lookups, 1Lookup's Website Visitor ID is the alternative. Website Visitor ID requires approval. Start the 7-day free trial, then send the short application inside your account: we review each website before we switch on visitor identification.

How much does Opensend cost?

Three tiers by identities delivered and site traffic, from 2,000+ identities for sites with 10,000 to 50,000 monthly visitors up to 9,500+; annual billing saves 20%, and Enterprise is priced on a call. A 14-day trial, advertised for $1. Checked October 2026 on opensend.com.

How much does 1Lookup charge for an identified visitor?

5 credits for each identified person, and nothing for a visitor who is not identified. Starter ($99 a month) covers up to 4,000 identified people at $0.02475 each, Growth ($299 a month) covers up to 17,000 identified people at $0.0176 each, Professional ($799 a month) covers up to 50,000 identified people at $0.016 each and Enterprise ($1,999 a month) covers up to 200,000 identified people at $0.01 each. Credits come from a plan that also pays for every other 1Lookup product, and unused subscription credits roll over for up to 3 months.

Is 1Lookup cheaper than Opensend?

On month-to-month billing 1Lookup costs less at 1 to 9,500 people a month. Opensend never costs less than a 1Lookup plan in its published range. At 2,000 identified people a month, 1Lookup Starter costs $99 and Opensend Tier 1 costs $500. At 4,300 identified people a month, 1Lookup Growth costs $299 and Opensend Tier 2 costs $1,000.

Does Opensend identify people or companies?

People, for ecommerce: Opensend bills each identity it delivers and syncs it into Klaviyo, Meta, Google, TikTok and other tools. 1Lookup's Website Visitor ID identifies business visitors, with a work email and a LinkedIn profile.

Which visitors does 1Lookup identify?

Website Visitor ID identifies visitors worldwide outside Europe: every country except the European Union, Iceland, Liechtenstein, Norway, the United Kingdom and Switzerland. A visitor it cannot identify, wherever they are, costs no credits, because only identified people are billed.

What comes back for each identified person?

Identified people come back by API, by webhook or in a CSV file, each with a name, a work email, a LinkedIn profile URL, a job title and a company, and a phone number with its do-not-call flag for about 1 in 4 people.

Do unused credits carry over?

1Lookup subscription credits roll over for up to 3 months, so a quiet month does not waste a plan. On Opensend: unused credit rolls over.

How do I switch from Opensend to 1Lookup?

Add one script to the pages where you want visitors identified, and pick where the people go: an API, a webhook or a CSV. Opensend is built for shoppers and 1Lookup for business visitors, so check that the people you want are at work when they visit before you move a store over. Run Opensend and Website Visitor ID side by side for a month and compare the named people you get before you cancel anything.

Is Opensend worth it in 2026?

Yes, if you sell to consumers and want identified shoppers synced in real time into Klaviyo, Meta, Google and TikTok, with unused credit rolling over. If you want a named person with a work email for each identified visitor, from $99 a month for 4,000 identified people, compare 1Lookup.

1lookup

Start free trial and see the person behind each visit

Start your free trial, see who is visiting your site, and compare the bill with Opensend.

5 credits per identified person, nothing for a visitor it cannot identify, from $99 a month for 4,000 identified people.

Start free trial See per-person pricing

Opensend starts at $500 a month for 2,000 identified people, and 1Lookup starts at $99 a month for 4,000 identified people.

Here is where 1Lookup wins against Opensend, and where Opensend still wins.

Identify a website visitor for 2.5¢, 90% below RB2B's 25¢.

Here is which 1Lookup product matches each Opensend job.

Website Visitor ID

Both products are measured on the same criteria, using Opensend's own published numbers.

This is what Opensend and 1Lookup cost at the same monthly volume.

This is how you buy from 1Lookup and from Opensend.

This is what one 1Lookup result looks like.

Try the Website Visitor ID Cost Calculator, one of 1Lookup's free tools.

Here is the evidence behind every number on this page.

Pick 1Lookup or stay with Opensend depending on the job in front of you.

People ask these questions before they switch from Opensend.

Start your free trial, see who is visiting your site, and compare the bill with Opensend.

Keep researching Opensend with the matching 1Lookup pages.