Agent
Discoverability
Developer Tools · Category leaderboard

Email APIs & Programmable Inboxes

Which Email APIs & Programmable Inboxes products ChatGPT and Claude find and pick first, the keywords behind those choices, and the gaps nobody owns yet.

Winning now on Claude

Email APIs & Programmable Inboxes

  1. 1Resend▼ -2 in 30 days59/100
  2. 2AgentMail▲ +4 in 30 days45/100
  3. 3Inkbox▲ +4 in 30 days28/100
  4. 4Gmail▼ -2 in 30 days28/100
  5. 5Bird15/100

Who’s winning in Email APIs & Programmable Inboxes

The companies each platform finds, picks and places first for this category’s prompts, ranked by Discoverability Score.

Who’s winning on ChatGPT

Category Discoverability Score · suggestion counts cover all public benchmark prompts since tracking began

No published ChatGPT scores for Email APIs & Programmable Inboxes yet

The leaderboard appears when this category has published benchmark measurements.

Get notified when it’s ready →

Who’s winning on Claude

Category Discoverability Score · suggestion counts cover all public benchmark prompts since tracking began

Resend leads Email APIs & Programmable Inboxes on Claude with a score of 59, 14 points ahead of AgentMail.

  1. 1Resend59/100
  2. 2AgentMailsuggested 336×45/100
  3. 3Inkbox28/100
  4. 4Gmail28/100
  5. 5Birdsuggested 84×15/100
  6. 6Superhuman12/100
  7. 7MailerLite8/100
  8. 8Microsoft 3657/100

How the leaders are moving

Each line is a company’s daily Discoverability Score. See who is climbing, who is slipping, and how close Email APIs & Programmable Inboxes is.

Score trend on ChatGPT

Daily Discoverability Score of the top companies

The trend chart starts once Email APIs & Programmable Inboxes has scores

We chart each company’s daily ChatGPT score as soon as this category has been tested.

Get notified when it’s ready →

Score trend on Claude

Daily Discoverability Score of the top 5

Key points

  • Resend leads at 59, down 2 over 30 days.
  • Microsoft 365 has fallen 5 points in 30 days, to 7.
  • Braze is climbing fastest: up 5 in 30 days, now 7.
  • Resend59
  • AgentMail45
  • Inkbox28
  • Gmail28
  • Bird15
02040608015 Aug30 Aug15 Sept30 Sept16 Oct

Rising, last 30 days

  • ▲ +5Braze7
  • ▲ +4Inkbox28
  • ▲ +4AgentMail45

Falling, last 30 days

  • ▼ -5Microsoft 3657
  • ▼ -2Resend59
  • ▼ -2Gmail28
Scores from 15 Aug to 16 Oct. Hover or use the arrow keys to read a day.

The keywords behind discovery

Compare reviewed searches for Email APIs & Programmable Inboxes with separately recorded platform keyword evidence.

Plugin registry keywords

13 of 13 searches completed · as of 7 Oct 2026

Captured searches for Email APIs & Programmable Inboxes in the Plugin registry. Counts show distinct plugins returned by each captured search.

  • email bounce management50Resend
  • email sending domain management50Resend
  • agent email inbox27AgentMail
  • email attachments API25AgentMail
  • rotate email API credentials25OpenAI Certified
  • email API23AgentMail
  • send transactional email23Resend
  • email delivery events23Resend
  • email drafts approval20Gmail
  • transactional email19Resend
  • inbound email webhook16Resend
  • email sandbox14AgentMail
  • programmable inbox8AgentMail

Keywords agents use in Claude

158 keywords tracked · as of 13 Oct 2026

When someone asks Claude for help, it turns the request into keywords and searches the Connector registry. This shows the keywords it uses most, the distinct Connector names returned across recorded searches, and which Connector was returned first most often.

  • emailUnavailable–
  • transactional emailUnavailable–
  • sendgridUnavailable–
  • inboxUnavailable–
  • postmarkUnavailable–
  • mailgunUnavailable–
  • gmailUnavailable–
  • email deliveryUnavailable–
  • email apiUnavailable–
  • suppression listUnavailable–
  • helpdeskUnavailable–
  • email deliverabilityUnavailable–

Browse every Plugin and Connector in Email APIs & Programmable Inboxes

25 listings across ChatGPT and Claude, best score first.

  • AgentMailagentmail.toConnector45/100
  • Birdbird.comConnector15/100
  • Infobip Messageinfobip.comConnector0/100
  • AgentiSendagentisend.comCommunity connectorPending Verification
  • AgentiSendagentisend.comPluginComing soon
  • AgentMailagentmail.toPluginComing soon
  • AgentMaileragentmailer.aiCommunity connectorPending Verification
  • AllStackdallstackd.comCommunity connectorPending Verification
  • api.replylayer.aireplylayer.aiCommunity connectorPending Verification
  • api.temp-mail.iotemp-mail.ioCommunity connectorPending Verification
  • Cheramicherami.toCommunity connectorPending Verification
  • Cooper Emailcooperemail.comCommunity connectorPending Verification
  • Cooper Emailcooperemail.comPluginComing soon
  • Cyberpigeoncyberpigeon.aiCommunity connectorPending Verification
  • Inkboxinkbox.aiPluginComing soon
  • MachineMailmachinemail.devCommunity connectorPending Verification
  • Maileroomaileroo.comCommunity connectorPending Verification
  • MailLogicmaillogic.ioCommunity connectorPending Verification
  • Poofboxpoofboxmail.comCommunity connectorPending Verification
  • Prontunoprontuno.comPluginComing soon

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