# STACK and Volty > General contractors email to ask where a bid stands in STACK, and project managers ask Volty in team chat for a takeoff quantity without opening the plans. Contractors who estimate in STACK let Volty tell general contractors where a bid stands, and give project managers a takeoff quantity without opening the plans. Talk to Volty · Free trial Updated 2 Nov 2026 ## Drywall bid, due Friday Patricia emails about the Linden Avenue bid. Volty finds the estimate in review in STACK. PN Patricia Nguyen Email · General contractor Hi, checking on your drywall bid for the Linden Avenue medical office. Bids are due Friday. Checked STACK · Linden Ave Medical Office · Estimate in review · Due Nov 6 Volty Hi Patricia, our estimate for Linden Avenue is in final review with Ray, our chief estimator. You will have it before the Friday, November 6 deadline. STACK project Linden Ave Medical Office In review Scope Drywall and framing Wall area 38,400 sq ft Estimator Ray Delgado Bid due Fri Nov 6 Projects, takeoffs and estimates the account shares ## What Volty does with STACK STACK is cloud takeoff and estimating software where subcontractors and builders measure plans and price bids. Volty reads a project's estimate status so a general contractor emailing about a bid hears where it stands and when it will arrive. Project managers ask Volty in team chat for a quantity off a takeoff without opening the plans. - Bid status for GCs · The estimate's stage and the bid due date, read before Volty replies. - Quantities without the plans · Linear feet, square feet or counts from a takeoff item. - Invitations to bid captured · Plans that arrive by email become a draft project for an estimator. - New projects approved first · Creating a STACK project starts Off and can wait for a colleague. Connects with STACK partner API, OAuth 2.0 Volty reads Projects, takeoff items and quantities, estimates Volty can change Draft projects, Off until you switch them on Setup The Volty team, after STACK grants API access Category Field service & construction A linear foot total pulled off the takeoff for the field. ### 6,210 feet of base Kayla needs a number for an order. Volty reads the takeoff item on Maple Street Townhomes. Estimating team Volty · Team chat K Kayla How many linear feet of base on the Maple Street takeoff? Checked STACK · Maple St Townhomes · Wood base · 6,210 LF VoltyAPP The Maple Street Townhomes takeoff has 6,210 linear feet of wood base. ## As an automation Describe it to Volty in a sentence; it drafts the automation and an admin turns it on. Bid invitations into STACK - When · Plans arrive by email · From a general contractor - Step 1 · Pulls out the basics · Job name, trade scope, bid date - Step 2 · Drafts a STACK project · An estimator approves it - Step 3 · Pings estimating · With the due date A GC's bid check answered with the estimate's review stage. ## How Volty connects to STACK STACK's API is an approved-partner API with OAuth 2.0 and a sandbox. Access starts with a request on STACK's developer site, and the Volty team sets Volty up from there as a custom connection to your STACK account. - 01 · Request API access from STACK · STACK reviews requests within two business days and holds a kick-off call. - 02 · Build and test in the sandbox · Volty's calls are tried against a sandbox partner account before your live data. - 03 · Authorize Volty on your account · Through STACK's OAuth flow, so Volty acts with the access you grant. - 04 · Approve and set switches in Volty · An admin approves the connection once. Each tool is On, Check with staff, or Off. ### The tools Volty gets Each one is a switch on the Sources page in Volty. - Find project · Reads - Read takeoff quantities · Reads - Read estimate status · Reads - Draft new project · Changes Reading tools can be turned on straight away. Anything that changes STACK starts Off, and once on it can be set to check with staff, so each change waits for a colleague. ## Common questions ### Does STACK give API access to any account? No. STACK's API is for approved partners. You or our team request access on STACK's developer site, STACK reviews it within two business days and holds a kick-off call, and work starts in a sandbox. Your account then authorizes Volty through STACK's OAuth 2.0 flow. ### Can Volty read the takeoff quantities on my plans? Yes, for the projects you agree to share. Volty reads takeoff items and their quantities, such as linear feet of base or square feet of drywall, and gives the number with the project name. It does not measure plans or change a takeoff. ### Will Volty send a bid price to a general contractor? Only if you set it up that way. In the example, Volty tells the GC the estimate is in review and when to expect it. Sharing a price is a decision for your estimator, and you can keep estimate totals out of what Volty reads. ### How much does it cost to connect STACK with Volty? Every Volty plan includes seats, active contacts and AI credits and starts with a free 7-day trial, and the plan prices are on voltade.com/pricing. Meta bills message charges separately for WhatsApp, Instagram and Messenger. ## Related integrations - Raken Field service & construction - Rhumbix Field service & construction - BuildOps Field service & construction - Outlook Email - Google Drive Files & storage All integrations ## Start your free trial Talk to Volty · Start your free trial Sign up for our 7-day trial. No credit card needed. ## Not convinced? 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Here's what it means for your business, 8 October 2026 ## Links - [Field service & construction](https://voltade.com/integrations?category=field-service) - [RakenField service & construction](https://voltade.com/integrations/raken) - [RhumbixField service & construction](https://voltade.com/integrations/rhumbix) - [BuildOpsField service & construction](https://voltade.com/integrations/buildops) - [OutlookEmail](https://voltade.com/integrations/outlook) - [Google DriveFiles & storage](https://voltade.com/integrations/google-drive) - [All integrations](https://voltade.com/integrations)