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
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
Marketing contact exports expose structured customer records.
SendGrid Export Contacts ↗
Export Contacts · Checked 2026-10-16
Bulk delivery 8.8/10
Batched or iterable API requests
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
Export jobs return metadata for multi-file CSV/JSON downloads.
SendGrid Export Contacts ↗
Operation overview / Export Contacts Status · Checked 2026-10-16
Query expressiveness 8.8/10
Documented structured API filters
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
Contact export accepts list_ids and segment_ids.
SendGrid Export Contacts ↗
Request body · Checked 2026-10-16
Access cost barrier -
-
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
The reviewed Twilio SendGrid route does not establish access cost barrier.
SendGrid Export Contacts ↗
Reviewed route documentation; applicable scoring contract not established · Checked 2026-10-16
Third-party accessibility
20% of the overall score before applicability adjustment.
Scored answers and evidence
Third-party eligibility -
-
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
The reviewed Twilio SendGrid route does not establish third-party eligibility.
SendGrid Export Contacts ↗
Reviewed route documentation; applicable scoring contract not established · Checked 2026-10-16
Downstream permission -
-
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
The reviewed Twilio SendGrid route does not establish downstream permission.
SendGrid Export Contacts ↗
Reviewed route documentation; applicable scoring contract not established · Checked 2026-10-16
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
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
PUT contacts adds or updates contact records asynchronously.
SendGrid Add or update a contact ↗
Operation overview / Response job_id · Checked 2026-10-16
Custom application path -
-
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
The reviewed Twilio SendGrid route does not establish custom application path.
SendGrid Export Contacts ↗
Reviewed route documentation; applicable scoring contract not established · Checked 2026-10-16
Continuity
15% of the overall score before applicability adjustment.
Scored answers and evidence
Refresh mechanism 7.5/10
Documented updated-since filters or webhooks
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
Email activity webhook sends events for subscribed email outcomes.
SendGrid Event Webhook overview and delivery ↗
Event Webhook overview · Checked 2026-10-16
Limit visibility 7.5/10
Service-specific limits disclosed in runtime headers
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
Endpoint-specific limit, remaining and reset headers plus 429 documented.
SendGrid v3 API rate-limit headers ↗
Rate limit response headers · Checked 2026-10-16
CDC and deletion capture -
-
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
The reviewed Twilio SendGrid route does not establish cdc and deletion capture.
SendGrid Export Contacts ↗
Reviewed route documentation; applicable scoring contract not established · Checked 2026-10-16
Replay and gap recovery 5.0/10
Bounded redelivery or overlapping queries; no durable consumer checkpoint
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
Failed email-event deliveries retry up to 24 hours; consumer replay unresolved.
SendGrid Event Webhook overview and delivery ↗
Retries · Checked 2026-10-16
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
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
Export status provides URLs to retrieve CSV/JSON files.
SendGrid Export Contacts ↗
Operation overview · Checked 2026-10-16
Post-cancellation access Disclosure
-
Disclosure only; does not reduce planned-exit credit.
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
The reviewed Twilio SendGrid route does not establish post-cancellation access.
SendGrid Export Contacts ↗
Reviewed route documentation; applicable scoring contract not established · Checked 2026-10-16
Planned migration fidelity 7.5/10
Portable structured records on documented routes; whole-product completeness unverified
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
Portable selected contacts; full email activity/templates/configuration unverified.
SendGrid Export Contacts ↗
Operation overview · Checked 2026-10-16
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
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
External applications process activity webhooks and contacts.
SendGrid Event Webhook overview and delivery ↗
Event Webhook overview · Checked 2026-10-16
Rights to custom logic -
-
Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate.
The reviewed Twilio SendGrid route does not establish rights to custom logic.
SendGrid Export Contacts ↗
Reviewed route documentation; applicable scoring contract not established · Checked 2026-10-16
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
Customer API keys carry selected scopes. The key guide does not by itself establish arbitrary third-party distribution eligibility or access to both Marketing Campaigns and Email API products.
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
POST /marketing/contacts/exports exports selected lists or segments to CSV or JSON files, with a job status step to obtain download URLs. Contact exports differ from email activity history.
| Access route | Authentication | Credential owner | Provider approval | Access requirement | Last checked |
|---|---|---|---|---|---|
| Customer scoped SendGrid v3 key | API key | Customer | Not confirmed | customer key scopes and product entitlement; marketing contacts and email api event webhook assessed separately | 2026-10-16 |
Availability depends on your product, plan and agreement. See the documentation below for the requirements of each route.
ECONOMIC ACCESS
Cost, authentication and limits
Each v3 endpoint publishes rate state through response headers; limits differ by endpoint. Minimum product entitlement and any fixed access charge for contacts and activity features remain unresolved.
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
PUT /marketing/contacts asynchronously adds or updates contacts. The returned job identifier must be checked before claiming completed contact changes; sending email is a separate operation.
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
Email Event Webhook retries unsuccessful deliveries at increasing intervals for up to 24 hours. Email events are not a general contact-deletion feed and do not establish retained consumer replay.
CDC, deletions and recovery
| Question | Answer / applicable route | Evidence |
|---|---|---|
| Can ongoing extraction identify updates and deleted records on the declared route? | -Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. The reviewed Twilio SendGrid route does not establish cdc and deletion capture. | SendGrid Export Contacts ↗Reviewed route documentation; applicable scoring contract not establishedChecked 2026-10-16 |
| How can extraction recover after missed events or an interrupted consumer? | Bounded redelivery or overlapping queries; no durable consumer checkpointTwilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. Failed email-event deliveries retry up to 24 hours; consumer replay unresolved. | SendGrid Event Webhook overview and delivery ↗RetriesChecked 2026-10-16 |
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
Selected contacts can be downloaded as CSV/JSON, split into multiple files if requested. Complete templates, suppressions, activity history and native automation require separate migration checks.
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
External applications can process exported contacts and webhook activity. Native workflow ownership and independent execution remain unresolved (Marketing Contacts and Email API have distinct coverage).
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 scopeTwilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. Marketing contact exports expose structured customer records. | SendGrid Export Contacts ↗Export ContactsChecked 2026-10-16 |
| How can customers retrieve data in bulk? | Batched or iterable API requestsTwilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. Export jobs return metadata for multi-file CSV/JSON downloads. | SendGrid Export Contacts ↗Operation overview / Export Contacts StatusChecked 2026-10-16 |
| What queries can a customer issue outside the provider UI? | Documented structured API filtersTwilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. Contact export accepts list_ids and segment_ids. | SendGrid Export Contacts ↗Request bodyChecked 2026-10-16 |
| Who decides whether a chosen third party may connect? | -Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. The reviewed Twilio SendGrid route does not establish third-party eligibility. | SendGrid Export Contacts ↗Reviewed route documentation; applicable scoring contract not establishedChecked 2026-10-16 |
| What extra commercial condition applies to the routes supplying the assessed read capability, relative to the lowest paid plan? | -Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. The reviewed Twilio SendGrid route does not establish access cost barrier. | SendGrid Export Contacts ↗Reviewed route documentation; applicable scoring contract not establishedChecked 2026-10-16 |
| What permission is needed for the documented downstream use? | -Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. The reviewed Twilio SendGrid route does not establish downstream permission. | SendGrid Export Contacts ↗Reviewed route documentation; applicable scoring contract not establishedChecked 2026-10-16 |
| Which external write operations are documented? | Create and update in one business domainTwilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. PUT contacts adds or updates contact records asynchronously. | SendGrid Add or update a contact ↗Operation overview / Response job_idChecked 2026-10-16 |
| How can customers connect an application they build or choose? | -Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. The reviewed Twilio SendGrid route does not establish custom application path. | SendGrid Export Contacts ↗Reviewed route documentation; applicable scoring contract not establishedChecked 2026-10-16 |
| What mechanism supports repeatable extraction of changes? | Documented updated-since filters or webhooksTwilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. Email activity webhook sends events for subscribed email outcomes. | SendGrid Event Webhook overview and delivery ↗Event Webhook overviewChecked 2026-10-16 |
| How are integration limits disclosed? | Service-specific limits disclosed in runtime headersTwilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. Endpoint-specific limit, remaining and reset headers plus 429 documented. | SendGrid v3 API rate-limit headers ↗Rate limit response headersChecked 2026-10-16 |
| Where can a usable data copy be delivered? | Customer-held structured files or API recordsTwilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. Export status provides URLs to retrieve CSV/JSON files. | SendGrid Export Contacts ↗Operation overviewChecked 2026-10-16 |
| What retrieval rights are documented at cancellation? | -Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. The reviewed Twilio SendGrid route does not establish post-cancellation access. | SendGrid Export Contacts ↗Reviewed route documentation; applicable scoring contract not establishedChecked 2026-10-16 |
| How can customers define their own business logic? | External integration code; native business logic portability not establishedTwilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. External applications process activity webhooks and contacts. | SendGrid Event Webhook overview and delivery ↗Event Webhook overviewChecked 2026-10-16 |
| What rights or portability are documented for custom workflow artifacts? | -Twilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. The reviewed Twilio SendGrid route does not establish rights to custom logic. | SendGrid Export Contacts ↗Reviewed route documentation; applicable scoring contract not establishedChecked 2026-10-16 |
| What usable data or native definitions can leave before cancellation? | Portable structured records on documented routes; whole-product completeness unverifiedTwilio SendGrid v3 Marketing Contacts export/upsert and Email API Event Webhook; inbound Parse, legacy Marketing APIs and Twilio Programmable Messaging are separate. Portable selected contacts; full email activity/templates/configuration unverified. | SendGrid Export Contacts ↗Operation overviewChecked 2026-10-16 |
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
- Lowest product/plan entitlement and access charges
- Arbitrary third-party application eligibility
- Contact update/deletion feed and durable replay
- Full email/history/template migration
- Native workflow rights and cancellation retrieval
Documentation
Assessment checked 2026-10-16. Each answer retains its source and applicable route; the check date does not establish live account behavior.