I will connect your CRM to google sheets slack and email with apis

J
john_lee3213
J
john_lee3213
John Lee

About this gig

I build dependable CRM and API workflows that move data between your CRM, Google Sheets, Slack, email and other business tools.


Your integration can:

receive webhooks or poll supported APIs

map, validate and transform records between systems

create or update leads, contacts, deals and spreadsheet rows

send Slack or email notifications when defined events occur

apply branching rules, duplicate checks and error handling

include logging, retries, tested source code and a setup guide


Ideal for sales teams, agencies, operations teams and founders who are copying data manually or missing follow-ups.


You will receive the configured workflow, field mapping, test cases, source code where applicable and deployment instructions. Client-owned API access, hosting and third-party subscription fees are not included. Bidirectional sync is available only when the selected systems support it.


I build compliant integrations using data and accounts you are authorised to use. I do not bypass access controls or vendor safeguards.


Message me through Fiverr before ordering if your workflow involves more than four systems, a legacy CRM, unusual authentication or sensitive regulated data.

Get to know John Lee

John Lee

Technical Product and Automation Specialist

  • FromUnited Kingdom
  • Member sinceJul 2026
  • Languages

    English, Korean
UCL Philosophy and Economics graduate with experience across HSBC, the Bank of England, Far East, and technology ventures. I co-founded an IP-led hardware business that launched products generating over $1M in revenue and helped a blockchain startup grow from zero to one and raise $3M. I specialise in browser and workflow automation, technical product development, research, QA, and turning complex requirements into clear, dependable deliverables.