--- title: "hank moved its login emails to AhaSend and has not retried a single API call since" description: "hank is a free reverse marketplace for car and motorcycle parts. Instead of browsing what shops happen to list, you post what you need: a photo, a description, and sellers across the EU, EEA and UK come back with a price and shipping. In parallel, hank crawls the web for matches and sends the buyer an AI-compiled report. Rare, discontinued and nameless parts that no search engine indexes reach scrap yards, enthusiasts and garage shelves this way. Descriptions and chat are auto-translated across seven languages, and there is no listing fee or commission." url: https://ahasend.com/blog/hank-moved-its-login-emails-ahasend-and-has-not-retried-single-api-call markdown_url: https://ahasend.com/blog/hank-moved-its-login-emails-ahasend-and-has-not-retried-single-api-call.md lang: en type: blog_post published: 2026-09-23 updated: 2026-09-23 author: "Mark Kraakman" category: "Case Studies" image: https://cms.ahasend.com/sites/default/files/2026-09/hank-case-study-14c.png --- # hank moved its login emails to AhaSend and has not retried a single API call since _By Mark Kraakman, September 23, 2026, in Case Studies_ ![hank moved its login emails to AhaSend](https://cms.ahasend.com/sites/default/files/2026-09/hank-case-study-14c.png) [hank](https://hank.parts/) is a free reverse marketplace for car and motorcycle parts. Instead of browsing what shops happen to list, you post what you need: a photo, a description, and sellers across the EU, EEA and UK come back with a price and shipping. In parallel, hank crawls the web for matches and sends the buyer an AI-compiled report. Rare, discontinued and nameless parts that no search engine indexes reach scrap yards, enthusiasts and garage shelves this way. Descriptions and chat are auto-translated across seven languages, and there is no listing fee or commission. hank is built and run from Spain by a small team, on the principle that the whole stack should be European. ## The problem hank runs a passwordless login: users receive a one-time code by email, valid for a short time. If that email is late or lands in spam, the prospect never becomes a user. "Their timely arrival is critical to converting prospects into users," says Robert Heide, founder of hank. Before AhaSend, hank sent through Scaleway's transactional email service on a dedicated IP plan. That created more problems than the shared pool had: the IP had to be manually whitelisted at t-online, warm-up did not go smoothly, and "OTP lost in spam" was a recurring line in support tickets. Cost was the final trigger. ## Why AhaSend The first contact was not a sales call. "You got in touch with me in reaction to a blog post I wrote, and our conversation was very much not a sales call for AhaSend. Over time I did some cost analysis, and since I was not perfectly happy with Scaleway anyway, I remembered our conversation." Three things decided it: European infrastructure, competitive pricing, and support that was pleasant and quick before hank was even a customer. On the first point Heide is precise: "I tried to build hank 100% on European infra. GDPR compliance is a must, especially for email. I don't want a hyperscaler with a sovereign region, I want a real European product." ## Migration and results The migration was gradual: adjacent services first, then the main product. "We had some DNS gremlins in the beginning, but they were resolved swiftly." Pricing at hank's volume was similar to before, so the switch was about reliability, not savings. The result is a number Heide checked himself before the interview: "I have checked our API delivery for retries over the last 30 days. There were none." And on deliverability: "Never had a single deliverability issue so far." hank still nudges users to check their spam folder on login emails, out of habit from the previous provider, but the complaints have stopped. ## What stood out Beyond deliverability and uptime, one feature Heide had not expected: the built-in blocklist of throwaway email services. On a free marketplace where the login is an email address, keeping disposable addresses out at the door saves a class of abuse before it starts. ## Would hank recommend AhaSend? "Yes I would. The free plan is generous and everything above is fairly priced. High made-in-EU focus, responsive support, and the product scales easily with your needs." Heide is also clear about what he expects as hank grows: reasonable per-second rate limits, competitive pricing at high volume, and campaign features with metadata per contact, such as storing a user's language. "Aiming for feature completeness, with campaign emails pending. Deliverability is excellent." ## At a glance - Passwordless marketplace where the login email is the product - Switched from Scaleway TEM after dedicated-IP whitelisting problems and OTP emails lost in spam - Zero API retries in the last 30 days, zero deliverability issues since the switch - Gradual migration, adjacent services first, then the main product - Built 100% on European infrastructure by choice, not by requirement - Disposable-email blocklist stops throwaway signups before they start Building a product where the email is the login? Put it on the same infrastructure hank relies on. [Start free with AhaSend](https://ahasend.com/)