OVERALL CONTROL / 0.6-customer-control
Grades and scoring
Data access
25% of the overall score before applicability adjustment.
Scored answers and evidence
Read interface 7.5/10
Structured API for the declared product scope
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
Constant Contact exposes contact fields and list memberships through v3. Contact selection and optional includes affect exported coverage.
Constant Contact contact collection ↗
Search criteria, includes and pagination · Checked 2026-10-22
Bulk delivery 8.8/10
Batched or iterable API requests
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
Follow the contacts collection’s next link until exhausted, retaining its original filters.
Constant Contact contact collection ↗
Search criteria, includes and pagination · Checked 2026-10-22
Query expressiveness 8.8/10
Documented structured API filters
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
updated_after, status and membership selectors narrow contacts. Deleted-status selection differs from recovery of deleted payloads.
Constant Contact contact collection ↗
Search criteria, includes and pagination · Checked 2026-10-22
Access cost barrier -
-
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
Minimum commercial entitlement and exact API charges were not established for the assessed route.
Constant Contact contact collection ↗
Search criteria, includes and pagination · Checked 2026-10-22
Third-party accessibility
20% of the overall score before applicability adjustment.
Scored answers and evidence
Third-party eligibility 5.0/10
Separate provider consent or partner agreement required
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
V3 uses OAuth. New applications initially work only for their creator’s account; support approval is required before other customers can authorize them.
Constant Contact OAuth application approval ↗
Private access and approval for all users · Checked 2026-10-22
Downstream permission -
-
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
Processing, AI-use, redistribution and other downstream contractual permissions were not settled by this technical review.
Constant Contact OAuth application approval ↗
Private access and approval for all users · Checked 2026-10-22
External action
15% of the overall score before applicability adjustment.
Scored answers and evidence
Write interface 7.5/10
Create and update in one business domain
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
Create or update contacts through the sign-up-form operation, retaining documented consent and list-membership behavior.
Constant Contact create-or-update contact ↗
Create or update using a sign-up form · Checked 2026-10-22
Custom application path 5.0/10
Approved third-party applications using fixed interfaces
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
The documented interface can connect customer application code within its authorization and resource scope.
Constant Contact OAuth application approval ↗
Private access and approval for all users · Checked 2026-10-22
Continuity
15% of the overall score before applicability adjustment.
Scored answers and evidence
Refresh mechanism 7.5/10
Documented updated-since filters or webhooks
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
updated_after selects changed contacts. Include the appropriate contact states; retained change replay remains unverified.
Constant Contact contact collection ↗
Search criteria, includes and pagination · Checked 2026-10-22
Limit visibility 7.5/10
Numeric usage or polling guidance
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
API keys allow 10,000 requests/day and four/second. Daily capacity resets at 00:00 UTC; quota and throttle errors are distinct.
Constant Contact v3 rate limits ↗
Daily and per-second limits; error keys · Checked 2026-10-22
CDC and deletion capture 5.0/10
Updates identified; deletion capture not established
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
The collection supports updated contacts and status selection. This review does not establish a complete hard-deletion stream.
Constant Contact contact collection ↗
Search criteria, includes and pagination · Checked 2026-10-22
Replay and gap recovery 2.5/10
Rebuild from a fresh snapshot; no historical replay established
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
Repeat the declared collection or export route to rebuild current state within its permissions and selection limits. Deleted payloads and intermediate history are unverified.
Constant Contact contact collection ↗
Search criteria, includes and pagination · Checked 2026-10-22
Data exit
20% of the overall score before applicability adjustment.
Scored answers and evidence
Export custody 7.5/10
Customer-held structured files or API records
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
The assessed structured payloads can be retained in customer-held files. Broader contractual reuse rights remain unresolved.
Constant Contact contact collection ↗
Search criteria, includes and pagination · Checked 2026-10-22
Post-cancellation access Disclosure
-
Disclosure only; does not reduce planned-exit credit.
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
The reviewed technical documentation does not establish retrieval rights after account termination.
Constant Contact OAuth application approval ↗
Private access and approval for all users · Checked 2026-10-22
Planned migration fidelity 7.5/10
Portable structured records on documented routes; whole-product completeness unverified
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
Retain the assessed structured records before losing access. Attachments, historical versions, permissions and full product configuration need separate extraction.
Constant Contact contact collection ↗
Search criteria, includes and pagination · Checked 2026-10-22
Business logic and customization
5% of the overall score before applicability adjustment.
Scored answers and evidence
Logic authoring 2.5/10
External integration code; native business logic portability not established
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
External code can use this interface; native workflow portability was not established (API clients and native definitions are different artifacts).
Constant Contact OAuth application approval ↗
Private access and approval for all users · Checked 2026-10-22
Rights to custom logic -
-
Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded.
Ownership and reusable export rights for native workflow artifacts need a separate contractual review.
Constant Contact OAuth application approval ↗
Private access and approval for all users · Checked 2026-10-22
Scores are out of 10. * Incomplete evidence discounts verified capabilities (unknown answers stay unknown). Planned migration drives data exit. Scoring method ↗
CUSTOMER CHOICE
Third-party accessibility
V3 uses OAuth. New applications initially work only for their creator’s account; support approval is required before other customers can authorize them.
Confirm who can connect, who owns the credentials and which uses are permitted. Customer consent and provider approval can be separate requirements; the selected plan and contract still matter.
READ / INTEGRATE
API and export routes
Follow the contacts collection’s next link until exhausted, retaining its original filters. updated_after, status and membership selectors narrow contacts. Deleted-status selection differs from recovery of deleted payloads.
| Access route | Authentication | Credential owner | Provider approval | Access requirement | Last checked |
|---|---|---|---|---|---|
| v3 contact collection and create-or-update through a publicly usable OAuth application | oauth2 | partner | Yes | provider approval | 2026-10-22 |
Availability depends on your product, plan and agreement. See the documentation below for the requirements of each route.
ECONOMIC ACCESS
Cost, authentication and limits
Minimum plan and exact route fees remain unconfirmed.
Check API entitlement, credential ownership and rate limits for the route you intend to use. Include review fees, customer-plan upgrades and ongoing access charges in the total.
ACT FROM OUTSIDE
External action
Create or update contacts through the sign-up-form operation, retaining documented consent and list-membership behavior.
Validate the supported operation, acting identity and permission scope (read access does not imply write permission). Ambiguous retries and revoked credentials also affect whether an external workflow can run safely.
KEEP ACCESS USEFUL
Continuity
updated_after selects changed contacts. Include the appropriate contact states; retained change replay remains unverified.
CDC, deletions and recovery
| Question | Answer / applicable route | Evidence |
|---|---|---|
| Can ongoing extraction identify updates and deleted records on the declared route? | Updates identified; deletion capture not establishedConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. The collection supports updated contacts and status selection. This review does not establish a complete hard-deletion stream. | Constant Contact contact collection ↗Search criteria, includes and paginationChecked 2026-10-22 |
| How can extraction recover after missed events or an interrupted consumer? | Rebuild from a fresh snapshot; no historical replay establishedConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. Repeat the declared collection or export route to rebuild current state within its permissions and selection limits. Deleted payloads and intermediate history are unverified. | Constant Contact contact collection ↗Search criteria, includes and paginationChecked 2026-10-22 |
Useful ongoing access includes corrections and deletions, not only the first export. A failed request, changed filter or lost resource permission should not be interpreted as a deleted record.
LEAVE WITH YOUR DATA
Data exit and portability
Retain the assessed structured records before losing access. Attachments, historical versions, permissions and full product configuration need separate extraction.
Test the output against the destination’s required fields and history. Check stable identifiers, relationships, attachments and extraction time; a sample file proves only the coverage of that sample.
BUILD / INSPECT / REUSE
Business logic and customization
Customers can write external integration code. Native workflow rights and independent execution remain unresolved (record access does not establish portable application logic).
Custom API access, ownership of workflows and the right to export their definitions are separate questions. A custom-app capability alone does not establish that business rules can move to another system.
AGREEMENTS / API DOCS / PROGRAM REQUIREMENTS
Documented conditions
Answers below come from public provider materials. Every answer retains its source check date, scope (a partner agreement does not describe every customer route). Customer contracts and live behavior still need verification.
| Question | Answer / applicable route | Evidence |
|---|---|---|
| What structured read interface is documented? | Structured API for the declared product scopeConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. Constant Contact exposes contact fields and list memberships through v3. Contact selection and optional includes affect exported coverage. | Constant Contact contact collection ↗Search criteria, includes and paginationChecked 2026-10-22 |
| How can customers retrieve data in bulk? | Batched or iterable API requestsConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. Follow the contacts collection’s next link until exhausted, retaining its original filters. | Constant Contact contact collection ↗Search criteria, includes and paginationChecked 2026-10-22 |
| What queries can a customer issue outside the provider UI? | Documented structured API filtersConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. updated_after, status and membership selectors narrow contacts. Deleted-status selection differs from recovery of deleted payloads. | Constant Contact contact collection ↗Search criteria, includes and paginationChecked 2026-10-22 |
| Who decides whether a chosen third party may connect? | Separate provider consent or partner agreement requiredConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. V3 uses OAuth. New applications initially work only for their creator’s account; support approval is required before other customers can authorize them. | Constant Contact OAuth application approval ↗Private access and approval for all usersChecked 2026-10-22 |
| What extra commercial condition applies to the routes supplying the assessed read capability, relative to the lowest paid plan? | -Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. Minimum commercial entitlement and exact API charges were not established for the assessed route. | Constant Contact contact collection ↗Search criteria, includes and paginationChecked 2026-10-22 |
| Which external write operations are documented? | Create and update in one business domainConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. Create or update contacts through the sign-up-form operation, retaining documented consent and list-membership behavior. | Constant Contact create-or-update contact ↗Create or update using a sign-up formChecked 2026-10-22 |
| How can customers connect an application they build or choose? | Approved third-party applications using fixed interfacesConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. The documented interface can connect customer application code within its authorization and resource scope. | Constant Contact OAuth application approval ↗Private access and approval for all usersChecked 2026-10-22 |
| What mechanism supports repeatable extraction of changes? | Documented updated-since filters or webhooksConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. updated_after selects changed contacts. Include the appropriate contact states; retained change replay remains unverified. | Constant Contact contact collection ↗Search criteria, includes and paginationChecked 2026-10-22 |
| How are integration limits disclosed? | Numeric usage or polling guidanceConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. API keys allow 10,000 requests/day and four/second. Daily capacity resets at 00:00 UTC; quota and throttle errors are distinct. | Constant Contact v3 rate limits ↗Daily and per-second limits; error keysChecked 2026-10-22 |
| Where can a usable data copy be delivered? | Customer-held structured files or API recordsConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. The assessed structured payloads can be retained in customer-held files. Broader contractual reuse rights remain unresolved. | Constant Contact contact collection ↗Search criteria, includes and paginationChecked 2026-10-22 |
| What retrieval rights are documented at cancellation? | -Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. The reviewed technical documentation does not establish retrieval rights after account termination. | Constant Contact OAuth application approval ↗Private access and approval for all usersChecked 2026-10-22 |
| How can customers define their own business logic? | External integration code; native business logic portability not establishedConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. External code can use this interface; native workflow portability was not established (API clients and native definitions are different artifacts). | Constant Contact OAuth application approval ↗Private access and approval for all usersChecked 2026-10-22 |
| What rights or portability are documented for custom workflow artifacts? | -Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. Ownership and reusable export rights for native workflow artifacts need a separate contractual review. | Constant Contact OAuth application approval ↗Private access and approval for all usersChecked 2026-10-22 |
| What usable data or native definitions can leave before cancellation? | Portable structured records on documented routes; whole-product completeness unverifiedConstant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. Retain the assessed structured records before losing access. Attachments, historical versions, permissions and full product configuration need separate extraction. | Constant Contact contact collection ↗Search criteria, includes and paginationChecked 2026-10-22 |
| What permission is needed for the documented downstream use? | -Constant Contact / v3 contact collection and create-or-update through a publicly usable OAuth application; email content, campaigns and full account migration are excluded. Processing, AI-use, redistribution and other downstream contractual permissions were not settled by this technical review. | Constant Contact OAuth application approval ↗Private access and approval for all usersChecked 2026-10-22 |
SOURCES / SCOPE / HISTORY
Sources and open questions
This review is based on the documentation below. Live account behavior and customer-specific agreements haven’t been tested.
Still to confirm
- Minimum commercial entitlement and exact API charges
- Downstream contractual permissions and post-cancellation retrieval rights
- Complete migration of history, files, permissions and native workflow definitions
Documentation
Assessment checked 2026-10-22. Each answer retains its source and applicable route; the check date does not establish live account behavior.