WPIntell

mailster-sparkpost

Mailster SparkPost Integration

Uses SparkPost to deliver emails for the Mailster Newsletter Plugin for WordPress.

deliverymethod mailster mailsteresp newsletter sparkpost
38.0 Open evidence Open API Open on WordPress.org
100
10.1K
0.0
0
2
0

Proof Health

Open evidence

Commercial opportunities need traceable source links before they are treated as build-worthy.

21 / 40 rows with source links

52.5% of this page's analysis has direct source links.

0 build-decision rows missing links

0 rows here require auditable proof before promotion.

19 rows with no attached evidence

0 rows have source counts but still need direct links.

Download Momentum

180 days
38 64 -40.6% 343

Source Evidence

Open evidence explorer
mixed support · high severity · relevance 0.95
Your API Key is WRONG!

Your API Key is WRONG!: users show security, bugs, performance pain that may indicate a product gap.

Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
Proof Blocked card complete lead capture reliability Evidence linked to opportunity
Your API Key is WRONG!
mixed support · medium severity · relevance 0.78
Undefined variable $status

Undefined variable $status: users show bugs, compatibility, setup pain that may indicate a product gap.

Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
Proof Blocked card complete lead capture reliability Evidence linked to opportunity
For example this is popping up: Undefined variable $status in ./../wp-content/plugins/mailster-sparkpost/classes/sparkpost.class.php on line 591 If you have for me a fix for $status, I am happy to add it.
complaint support · medium severity · relevance 0.75
API key wrong, even with Master account

API key wrong, even with Master account: users show missing feature, setup pain that may indicate a product gap.

Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
Proof Blocked card complete lead capture reliability Evidence linked to opportunity
API key wrong, even with Master account I created a Sparkpost Master API Key and set permissions as per your instructions , but never got anything else than a “API key is wrong” message in Mailster Sparkpost.
mixed support · medium severity · relevance 0.73
It’s very slow

It’s very slow: users show performance, support, setup pain that may indicate a product gap.

Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
Proof Blocked card complete lead capture reliability Evidence linked to opportunity
It’s very slow Hi It’s very good idea to intagrate sparkpost But i sending with plugin (webapi) and it’s very slow .
complaint support · medium severity · relevance 0.69
Enable custom ip_pools

Enable custom ip_pools: users show missing feature pain that may indicate a product gap.

Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
Proof Blocked card complete lead capture reliability Evidence linked to opportunity
Enable custom ip_pools Hi, Currently this plugin defaults the ip_pool to sp_shared – it would good to have the option of adding the account default or custom ip pools for mailster to use.

Competitor Context

5 shown
Mailster Mailgun Integration praise owner · intel 81.5 · weakness 79.1
praise owner
stale update history below-average rating setup bugs 2 source links Proof Blocked Evidence linked to opportunity
Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
source 1 source 2
Mailster Gmail Integration watchlist · intel 52.5 · weakness 52.9
watchlist
stale update history 5 collected complaint signal(s) bugs compatibility 1 source link Proof Blocked Evidence linked to opportunity
Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
source 1
Mailster Multi SMTP watchlist · intel 49.1 · weakness 48.8
watchlist
stale update history 4 collected complaint signal(s) missing feature security 1 source link Proof Blocked Evidence linked to opportunity
Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
source 1
Mailster MailerSend Integration watchlist · intel 38.9 · weakness 36.7
watchlist
stale update history 1 collected complaint signal(s) bugs compatibility 1 source link Proof Blocked Evidence linked to opportunity
Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
source 1
Mailster Mailjet watchlist · intel 38.4 · weakness 36.2
watchlist
stale update history 1 collected complaint signal(s) bugs support 1 source link Proof Blocked Evidence linked to opportunity
Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
source 1

Repeated Themes

0 shown

No repeated plugin-level themes have been generated yet.

Collected Signals

5 shown from 5 collected
mixed Undefined variable $status support · 2025-04-30T07:46:25+00:00 · medium severity · newsletter

Undefined variable $status: users show bugs, compatibility, setup pain that may indicate a product gap.

Evidence: For example this is popping up: Undefined variable $status in ./../wp-content/plugins/mailster-sparkpost/classes/sparkpost.class.php on line 591 If you have for me a fix for $status, I am happy to add it.
bugs compatibility setup quality lead capture reliability Proof Blocked card complete Evidence linked to opportunity
Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
source plugin
complaint API key wrong, even with Master account support · 2018-08-13T06:04:14+00:00 · medium severity · newsletter

API key wrong, even with Master account: users show missing feature, setup pain that may indicate a product gap.

Evidence: API key wrong, even with Master account I created a Sparkpost Master API Key and set permissions as per your instructions , but never got anything else than a “API key is wrong” message in Mailster Sparkpost.
missing feature setup api lead capture reliability Proof Blocked card complete Evidence linked to opportunity
Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
source plugin
complaint Enable custom ip_pools support · 2017-11-19T00:57:08+00:00 · medium severity · newsletter

Enable custom ip_pools: users show missing feature pain that may indicate a product gap.

Evidence: Enable custom ip_pools Hi, Currently this plugin defaults the ip_pool to sp_shared – it would good to have the option of adding the account default or custom ip pools for mailster to use.
missing feature quality lead capture reliability Proof Blocked card complete Evidence linked to opportunity
Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
source plugin
mixed It’s very slow support · 2017-08-16T06:51:06+00:00 · medium severity · newsletter

It’s very slow: users show performance, support, setup pain that may indicate a product gap.

Evidence: It’s very slow Hi It’s very good idea to intagrate sparkpost But i sending with plugin (webapi) and it’s very slow .
performance support setup quality lead capture reliability Proof Blocked card complete Evidence linked to opportunity
Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
source plugin
mixed Your API Key is WRONG! support · 2017-08-10T09:11:44+00:00 · high severity · newsletter

Your API Key is WRONG!: users show security, bugs, performance pain that may indicate a product gap.

Evidence: Your API Key is WRONG!
security bugs performance missing feature lead capture reliability Proof Blocked card complete Evidence linked to opportunity
Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor newsletter submissions, notification delivery, spam, and CRM handoffs
source plugin