# Compare MAILERS+4 vs Smarty 2026 | Capterra

> Unsure of what to choose? Check Capterra to compare MAILERS+4 and Smarty based on pricing, features, product details, and verified reviews.

Source: https://www.capterra.com/compare/190323-10014524/MAILERS-4-vs-Smarty

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# MAILERS+4 vs Smarty Features and Cost Comparison

Last updated March 13th, 2026

Provider data verified by our Software Research team, and reviews  
moderated by our Reviews Verification team.[Learn more](https://www.capterra.com/our-story/)

Your comparison:

MAILERS+4Smarty2/4 selected

[MAILERS+4](https://www.capterra.com/p/190323/MAILERS-4/)[4.4 (43)](https://www.capterra.com/p/190323/MAILERS-4/reviews/)

[Smarty](https://www.capterra.com/p/10014524/Smarty/)[4.9 (91)](https://www.capterra.com/p/10014524/Smarty/reviews/)

[## MAILERS+4](https://www.capterra.com/p/190323/MAILERS-4/)[4.4 (43)](https://www.capterra.com/p/190323/MAILERS-4/reviews/)

Starting Price

$895.00/year

Value-for-Money

4.2

Functionality

4.2

Ease of Use

4.2

Customer Service

4.6

Reviews Sentiment

Based on [43 reviews](#user-reviews)

Positive

40

Neutral

3

Negative

0

[## Smarty](https://www.capterra.com/p/10014524/Smarty/)[4.9 (91)](https://www.capterra.com/p/10014524/Smarty/reviews/)

Starting Price

$17.00/month

Value-for-Money

4.7

Functionality

4.8

Ease of Use

4.8

Customer Service

4.8

Reviews Sentiment

TO

SG

DW

Based on [91 reviews](#user-reviews)

Positive

91

Neutral

0

Negative

0

## Summary

* * *

Features in Mailroom Management Software

Best performer

7 / 40

Only MAILERS+4

-   CASS Certified
-   Duplicate Management
-   Intelligent Mail Support

7 / 40

Only Smarty

-   Activity Dashboard
-   API
-   Data Extraction

User satisfaction

User satisfaction

4.4

User reviews[43](https://www.capterra.com/p/190323/MAILERS-4/reviews/)

Ease of use

4.2

Functionality

4.2

Value for money

4.2

Customer support

4.6

User satisfaction

4.9

User reviews[91](https://www.capterra.com/p/10014524/Smarty/reviews/)

Ease of use

4.8

Functionality

4.8

Value for money

4.7

Customer support

4.8

Price starts from

Price starts from

$895Per Feature, Per Year

-   Free version
-   Free trial

Price starts from

$17Usage Based, Per Month

-   Free version
-   Free trial

Best for

Best for

Small to medium sized mailing houses and mailroom operations looking to streamline address verification and postal processing to save on postage, address correction fees and undeliverable mail.

Best for

Smarty is a B2B address data intelligence company providing services to organizations of all sizes in various industries, including insurance, telecommunications, healthcare, and finance.

## User reviews

Pros & cons

Not enough reviews

TO

Tunc O.

Head of Product and Data

> "The API is rock-solid (zero downtime in 8 months), and the autocomplete feature has sped up our checkout process considerably. Plus,..."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___7048586)

MJ

Milan J.

Software Engineering Architect

> "I feel various features are missing, for example, detail of traffic sources and volume on various apis, api throttling..."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6271201)

SG

Stephanie G.

Senior Manager Business Operations

> "The inclusion of the "Smarty Key" as a unique identifier really helps to identify records that need to be merged to maintain keep..."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___7057104)

PP

Paul P.

Head of Engineering

> "Can sometimes be incorrect for strange addresses or streets that have changed name, as we have had a few issues with renamed streets..."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6841977)

DW

Damian W.

Senior Director, Fundraising Technology

> "We added Smarty to the foundations register and donation forms around a year ago and it has greatly streamlined the form completion..."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6842656)

SF

Shubh F.

Data

> "It doesn't support much internationally which meant we needed to implement a secondary method to deal with international addresses."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6841860)

TO

Tunc O.

Head of Product and Data

> "We've cut shipping errors by roughly 80% and our customer service team spends way less time dealing with delivery issues."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___7048586)

LM

Lance M.

VP Professional Services

> "Sometimes we get results that can be a little confusing to know if it is a valid address, but it rarely happens."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6841865)

DD

Dmitriy D.

VP Data Engineering

> "Smarty is a high-quality address verification and geocoding service, with SDK that supports all major programming..."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6276944)

DD

Dmitriy D.

VP Data Engineering

> "Prior to release of Rooftop Geocoding functionality, the geocoding was not on par with other providers in this space."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6276944)

NF

Nuno F.

Managing Director

> "It feels like one of those tools that just works the way it should: no headaches, no learning curve, and great for teams that want..."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___7048991)

SF

Shubh F.

Data

> "It was useful and trustworthy with domestic addresses like US and Canada. But did not fit our international usecase"

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6841860)

NF

Nuno F.

Managing Director

> "The address validation is spot-on, and it immediately improved the accuracy of our data."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___7048991)

JP

Joe P.

IT Manager

> "If it doesn't sound stupid, sometimes it's too much data to sift through easily."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6843264)

SG

Stephanie G.

Senior Manager Business Operations

> "I highly recommend the Smarty Bulk Address Validation for USPS Address Verification and record cleanup."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___7057104)

MH

Matthew H.

CTO

> "Salespeople are a little pushy. "

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___7049277)

NF

Nuno F.

Managing Director

> "The API is fast, the interface is clean, and the data quality is solid."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___7048991)

XZ

Xiulong Z.

Engineering Manager

> "I remember the first time I used your API, I felt that the return value was not very friendly."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6841981)

MH

Michael H.

Happiness Engineer

> "Overall, Smarty was perfect for my address cleanup needs, and they were able to answer my questions as well."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___7061091)

CY

Curtis Y.

CTO

> "Our implementation of the address autocomplete stopped working and it was because they stopped supporting jsonp. "

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6271429)

BF

Brent F.

Architect

> "Its ability to handle domestic addresses makes it a top choice for enhancing our web platform's capabilities at a great price point."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6271049)

TR

Tyler R.

Director of Platform Development

> "The ideal plan for me was deprecated and I wasn't able to continue using it."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6842236)

LT

Lei T.

Product Manager

> "Even with variations in address formats, abbreviations, or misspellings, the tool constently delivers precise parsing results."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6270935)

JG

John G.

Business Advisor

> "The RDI was part of my original service but now taken away unless you're willing to pay a higher rate."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6271533)

BP

Byron P.

Owner

> "Smarty is a fantastic service, it pays for itself with all the postage that I save from not mailing to undeliverable addresses."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6842438)

MM

Matthew M.

Data Analyst

> "Web app struggles and tends to crash in chrome."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6271248)

RA

Ram A.

Registration Team Member

> "I like the way it directly works on the data sheet and I do not have to copy/past forward and back."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6842791)

EL

Elisa L.

Director of Data Systems

> "Our developers have had some struggles to keep up with updates that affect our implementation."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6278067)

MM

Matthew M.

Data Analyst

> "The address validation is helpful and accurate, also the CLI tool does a good job of fuzzy matching fields."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6271248)

PC

Pam C.

Executive Director

> "Customer service is sometimes difficult to get ahold of during critical times of need."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6273294)

CC

Casey C.

Principal Consultant

> "We integrated it with a data pipeline, and it performs extremely quickly and does a good job."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6842401)

BC

Betzalel C.

CTO

> "The inability to do more than 5000 records from the interface and crashed using chrome"

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6149178)

JP

Joe P.

IT Manager

> "Their APIs, applications and services to access the data are simple, but complete."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6843264)

CT

Chris T.

Lead Developer

> "There really wasn't anything I didn't like about the API."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6842439)

BL

Bruno L.

CTO

> "We loved the plug and play approach while still offering deep customization options."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6842342)

KS

Kyle S.

Senior Software Engineer

> "Was a little TOO easy to implement."

[See full review](https://www.capterra.com/p/10014524/Smarty/#Capterra___6271210)

[View Reviews](https://www.capterra.com/p/10014524/Smarty/reviews/)

## User interface

4.42 (43)

4.88 (91)

### Features

MAILERS+4

7/40

-   Activity Dashboard
-   AI Copilot
-   Alerts/Notifications
-   API
-   Barcode/Label Management
-   CASS Certified
-   Communication Management
-   Contact Database
-   Corporate/Business
-   Customizable Forms
-   Data Extraction
-   Data Import/Export
-   Data Security
-   Delivery Management
-   Delivery Tracking
-   Document Storage
-   Document Templates
-   Duplicate Management
-   Generative AI
-   Intelligent Mail Support
-   Invoice Management
-   Job Management
-   NCOALink Processing
-   Package Tracking
-   PAVE Certified Presorting
-   Print Management
-   Real-Time Analytics
-   Real-Time Notifications
-   Reminders
-   Reporting & Statistics
-   Role-Based Permissions
-   Search/Filter
-   Self Service Portal
-   Shipping Management
-   Signature Capture
-   SMS Messaging
-   Status Tracking
-   Third-Party Integrations
-   Visitor Tracking
-   Workflow Management

[See all features](https://www.capterra.com/p/190323/MAILERS-4/#features)

Smarty

7/40

-   Activity Dashboard
-   AI Copilot
-   Alerts/Notifications
-   API
-   Barcode/Label Management
-   CASS Certified
-   Communication Management
-   Contact Database
-   Corporate/Business
-   Customizable Forms
-   Data Extraction
-   Data Import/Export
-   Data Security
-   Delivery Management
-   Delivery Tracking
-   Document Storage
-   Document Templates
-   Duplicate Management
-   Generative AI
-   Intelligent Mail Support
-   Invoice Management
-   Job Management
-   NCOALink Processing
-   Package Tracking
-   PAVE Certified Presorting
-   Print Management
-   Real-Time Analytics
-   Real-Time Notifications
-   Reminders
-   Reporting & Statistics
-   Role-Based Permissions
-   Search/Filter
-   Self Service Portal
-   Shipping Management
-   Signature Capture
-   SMS Messaging
-   Status Tracking
-   Third-Party Integrations
-   Visitor Tracking
-   Workflow Management

[See all features](https://www.capterra.com/p/10014524/Smarty/#features)

### Recognition

No recognitions have been awarded to MAILERS+4

No recognitions have been awarded to Smarty

### Deployment & support

MAILERS+4

Deployment

-   Cloud, SaaS, Web-Based
-   Desktop Mac
-   Desktop Windows
-   Desktop Linux
-   On-Premise Windows
-   On-Premise Linux
-   Desktop Chromebook
-   Mobile Android
-   Mobile iPhone
-   Mobile iPad

Support

-   Email/Help Desk
-   FAQs/Forum
-   Knowledge Base
-   Phone Support
-   24/7 (Live rep)
-   Chat

Training

-   In Person
-   Live Online
-   Webinars
-   Documentation
-   Videos

Smarty

Deployment

-   Cloud, SaaS, Web-Based
-   Desktop Mac
-   Desktop Windows
-   Desktop Linux
-   On-Premise Windows
-   On-Premise Linux
-   Desktop Chromebook
-   Mobile Android
-   Mobile iPhone
-   Mobile iPad

Support

-   Email/Help Desk
-   FAQs/Forum
-   Knowledge Base
-   Phone Support
-   24/7 (Live rep)
-   Chat

Training

-   In Person
-   Live Online
-   Webinars
-   Documentation
-   Videos

### Company Details

MAILERS+4

-   By Melissa
-   Located in United States
-   Founded in 1985

Smarty

-   By Smarty
-   Located in United States
-   Founded in

## Popular Comparisons

[Smarty](https://www.capterra.com/p/10014524/Smarty/)[4.88 (91)](https://www.capterra.com/p/10014524/Smarty/reviews/)

vs

[PostGrid Address Verification](https://www.capterra.com/p/242338/PostGrid-Address-Verification/)[5.00 (28)](https://www.capterra.com/p/242338/PostGrid-Address-Verification/reviews/)

$17/month

Price

Contact vendor for pricing

4.8

Features

5.0

4.8

Ease of Use

5.0

[View full comparison](https://www.capterra.com/compare/242338-10014524/PostGrid-Address-Verification-vs-Smarty)

[Smarty](https://www.capterra.com/p/10014524/Smarty/)[4.88 (91)](https://www.capterra.com/p/10014524/Smarty/reviews/)

vs

[Addressfinder](https://www.capterra.com/p/229302/AddressFinder/)[4.70 (27)](https://www.capterra.com/p/229302/AddressFinder/reviews/)

$17/month

Price

Contact vendor for pricing

4.8

Features

4.6

4.8

Ease of Use

4.7

[View full comparison](https://www.capterra.com/compare/229302-10014524/AddressFinder-vs-Smarty)